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8-bit, high speed, multiplying d/a converter (universal digital logic interface) dac08 rev. c in fo rmation furn ished by an alog d e v i c e s is believed to be accurate and reliable. how e ver, n o resp on sibili ty is assume d b y a n alog de vices fo r its use, nor for an y i n fri n geme nt s of p a t e nt s or ot h e r ri ght s o f th ird parties th at may result fro m its use . specifications subjec t to chan g e witho u t n o tice. no licen s e is g r an te d by implicati o n or ot herwi s e u n der a n y p a t e nt or p a t e nt ri ghts of analog de v i ces. trademarks an d registered tra d ema r ks are the prop erty o f their respective ow ners. one technolog y way, p.o . box 9106, norwood, ma 02062-9106, u.s.a. t e l: 781. 329. 4 700 www.analog.com fax: 781. 326. 87 03 ? 2004 analog de vices, i n c. al l r i ght s r e ser v ed . features fast settling o u tput current: 85 ns full-scal e curre nt prematched to 1 lsb direct interfac e to ttl, cmos, ecl, htl, pm os nonlinearity to 0.1% maxim u m over temper ature range high o u tput im pedance and c o mpliance: ?10 v to +18 v complementary current outp uts wide range multiplying ca pability: 1 mhz bandwidth low fs cu rrent drift: 10 ppm/c wide po wer su pply range: 4. 5 v to 18 v low power con s umption: 33 mw @ 5 v low cost general description the d a c08 s e r i es o f 8-b i t m o noli thic dig i tal-to-a nalog co n v er t - ers p r o v ide v e r y hig h s p e e d p e r f o r ma n c e co u p le d w i t h lo w cost a nd o u tst a n d ing a p plic a t io ns f l exi b i l i t y . a d v a nc e d c i rc u i t d e s i g n a c h i e v e s 8 5 ns s e tt l i ng t i me s w i t h ve r y lo w g li t c h e n e r g y a n d a t lo w p o w e r co n s u m p t io n. m o n o t o nic m u l t i p ly in g p e r f o r ma n c e is a t t a in e d o v er a w i d e 20-t o -1 re fe re nc e c u r r e n t r a nge. m a tc h i ng to w i t h i n 1 l s b b e t w e e n r e fer e n c e an d f u l l -s cal e c u r r en ts e l imina t es t h e n e e d fo r f u l l - s c a l e t r i m m i n g in m o st a p plic a t io n s . dir e c t in t e r f ace t o a l l p o p u la r log i c fami lies wi t h f u l l n o is e im m u n i ty is p r o v ide d b y th e h i g h sw i n g, a d j u s t a b le th r e sh o l d logi c in p u t. h i g h volt age c o m p l i a n c e c o m p l e me n t ar y c u r r e n t out p ut s are p r o v id e d , i n cr e a sin g vers a t i l i t y a nd ena b l i n g di f f er en t i a l o p era t ion t o ef fe c t i v e l y doub le t h e p e a k - t o-p e a k o u t p u t s w i n g. in m a n y app l i c at i o n s , t h e ou tpu t s c a n b e d i re c t l y c o n v e r t e d t o v o l t a g e wi t h ou t t h e n e e d fo r a n ext e r n al o p a m p . al l d a c08 s e r i e s m o d e l s g u ar an te e f u l l 8 - b i t monoton i c i t y , an d non l i n e a r i - t i es as t i g h t as 0 .1% o v er t h e e n t i r e o p era t in g t e m p era t ur e ra n g e a r e a v a i l a b l e . d e vi c e p e r f o r manc e is e s s e n t i a l l y u n cha n ge d o v er th e 4.5 v t o 18 v p o w e r s u p p l y ra n g e , wi th 33 mw p o w e r co n s u m pt io n a t t a ina b l e a t 5 v su p p lies. th e co m p act siz e a n d lo w p o w e r co n s um p t i o n mak e t h e d a c08 at t r a c t i v e f o r p o r t a b l e a n d m i l i t a r y / a e r o s p a c e ap p l i c at i o n s ; de vices p r o c ess e d t o mil - s t d-883, l e v e l b a r e a v a i lab l e . d a c08 a p p l ic a t io n s in c l ude 8-b i t, 1 s a/d con v er t e rs, s e r v o m o to r and p e n dr i v ers, w a vefo r m ge n e r a to rs, a u dio e n co ders a n d a t t e n u a t o r s, a n alog m e t e r dr i v er s, p r ogra m m a b le p o w e r su p p lies, lc d d i spla y dr i v ers, h i g h sp e e d m o de m s , an d o t h e r ap p l i c at i o n s w h e r e l o w c o s t , h i g h s p e e d , a n d c o mp l e t e in p u t/o u t p ut v e rs a t i l i t y a r e r e quir e d . func ti on a l bl ock di a g r a m 00268-c-001 v ref (+) 14 15 v+ v lc (msb) b1 b2 b3 b4 b5 b6 b7 (lsb) b8 13 1 5 6 7 8 9 10 11 12 v? comp 3 16 4 2 i out i out bias network current switches v ref (? ) reference amplifier dac08 fi g u r e 1 .
dac08 rev. c | page 2 of 20 table of contents specifications ..................................................................................... 3 electrical characteristics ............................................................. 3 typical electrical characteristics ............................................... 4 absolute maximum ratings ............................................................ 5 esd caution .................................................................................. 5 pin connections ............................................................................... 6 test and burn-in circuits ................................................................ 7 typical performance characteristics ............................................. 8 basic connections .......................................................................... 11 application information ................................................................ 13 reference amplifier setup ........................................................ 13 reference amplifier compensation for multiplying applications ................................................................................ 13 logic inputs ................................................................................. 13 analog output currents ........................................................... 14 power supplies ............................................................................ 14 temperature performance ......................................................... 14 multiplying operation ............................................................... 14 settling time ............................................................................... 14 adi current output dacs ........................................................... 16 outline dimensions ....................................................................... 17 ordering guide .......................................................................... 18 revision history 11/04rev. b to rev. c changed so to soic .........................................................universal removed die ......................................................................universal changes to figure 30, figure 31, figure 32................................. 12 change to figure 33 ....................................................................... 15 added table 4.................................................................................. 16 updated outline dimensions ....................................................... 17 changes to ordering guide .......................................................... 18 2/02rev. a to rev. b edits to specifications............................................................. 2 edits to absolute maximum rating ................................ 3 edits to ordering guide.......................................................... 3 edits to wafer test limits ...................................................... 5 edit to figure 13 ............................................................................... 8 edits to figures 14 and 15 ............................................................... 9
dac08 rev. c | page 3 of 20 specifications electrical characteristics v s = 15 v, i ref = 2.0 ma, C55c t a +125c for dac08/dac08a, 0c t a +70c for dac08e and dac08h, ?40c to +85c for dac08c, unless otherwise noted. output characteristics refer to both i out and i out . table 1. dac08a/dac08h dac08e dac08c parameter symbol conditions min typ max min typ max min typ max unit resolution 8 8 8 bits monotonicity 8 8 8 bits nonlinearity nl 0.1 0.19 0.39 %fs settling time t s to 1/2 lsb, all bits switched on or off, t a = 25c 1 85 135 85 150 85 150 ns propagation delay each bit t plh t a = 25c 1 35 60 35 60 35 60 ns all bits switched t phl 35 60 35 60 35 60 ns full-scale tempco 1 tci fs 10 50 10 80 10 80 ppm/c dac08e 50 output voltage compliance v oc full-scale current (true compliance) change <1/2 lsb, r out > 20 m? typ ?10 +18 ?10 +18 C10 +18 v full range current i fr4 v ref = 10.000 v r14, r15 = 5.000 k? t a = 25c 1.984 1.992 2.000 1.94 1.99 2.04 1.94 1.99 2.04 ma full range symmetry i frs i fr4 ? i fr2 0.5 4 1 8 2 16 a zero-scale current i zs 0.1 1 0.2 2 0.2 4 a output current range i or1 r14, r15 = 5.000 k? 2.1 2.1 2.1 ma i or2 v ref = +15.0 v, v? = ?10 v v ref = +25.0 v, 4.2 4.2 4.2 ma v? = ?12 v output current noise i ref = 2 ma 25 25 25 na logic input levels logic 0 v il v lc = 0 v 0.8 0.8 0.8 v logic 1 v il 2 2 2 v logic input current v lc = 0 v logic 0 i il v in = ?10 v to +0.8 v ?2 ?10 ?2 ?10 ?2 ?10 a logic 1 i ih v in = 2.0 v to 18 v 0.002 10 0.002 10 0.002 10 a logic input swing v is v? = ?15 v ?10 +18 ?10 +18 ?10 +18 v logic threshold range v thr v s = 15 v 1 ?10 +13.5 ?10 +13.5 ?10 +13.5 v reference bias current i 15 ?1 ?3 ?1 ?3 ?1 ?3 a reference input di/dt r eq = 200 ? 4 8 4 8 4 8 ma/s slew rate r l = 100 ? c c = 0 pf. see figure 7. 1 power supply sensitivity pssi fs+ v+ = 4.5 v to 18 v 0.0003 0.01 0.0003 0.01 0.0003 0.01 %?i o /%?v+ pssi fsC v? = ?4.5 v to ?18 v 0.002 0.01 0.002 0.01 0.002 0.01 %?i o /%?v? i ref = 1.0 ma
dac08 rev. c | page 4 of 20 dac08a/dac08h dac08e dac08c parameter symbol conditions min typ max min typ max min typ max unit power supply current i+ v s = 5 v, i ref = 1.0 ma 2.3 3.8 2.3 3.8 2.3 3.8 ma i? ?4.3 ?5.8 ?4.3 ?5.8 ?4.3 ?5.8 ma i+ v s = +5 v, ?15 v, 2.4 3.8 2.4 3.8 2.4 3.8 ma i? i ref = 2.0 ma ?6.4 ?7.8 ?6 .4 ?7.8 ?6.4 ?7.8 ma i+ v s = 15 v, 2.5 3.8 2.5 3.8 2.5 3.8 ma i? i ref = 2.0 ma ?6.5 ?7.8 ?6 .5 ?7.8 ?6.5 ?7.8 ma power dissipation p d 5 v, i ref = 1.0 ma +5 v, ?15 v, 33 48 33 48 33 48 mw i ref = 2.0 ma 15 v, i ref = 2.0 ma 108 136 103 136 108 136 mw 135 174 135 174 135 174 mw 1 guaranteed by design. typical electrical characteristics v s = 15 v, and i ref = 2.0 ma, unless otherwise noted. output characteristics apply to both i out and i out . table 2. parameter symbol conditions all grades typical unit reference input slew rate di/dt 8 ma/s propagation delay t plh , t phl t a = 25c, any bit 35 ns settling time t s to 1/2 lsb, all bits switched on or off, t a = 25c 85 ns
dac08 r e v. c | pa ge 5 o f 2 0 absolute maximum ratings table 3. p a r a m e t e r r a t i n g operating temperature dac08aq, dac 08q ?55c to +125c dac08hq, dac 08eq, dac08cq, dac08hp, dac 08ep 0c to +70c dac08cp, dac0 8cs ?40c to +85c j u nction temperature (t j ) ?65c to +150c storage temperature q package ?65c to +150c storage temperature p package ?65c to +125c lead temperature (soldering, 60 sec) 300c v+ supply to v? supply 36 v logic inputs v? to v? + 36 v v lc v? to v+ analog current outputs (at v s? = 15 v) 4.25 ma reference input (v 14 to v 15 ) v? to v+ reference input differential voltage (v 14 to v 15 ) 1 8 v reference input current (i 14 ) 5 . 0 m a package type ja 1 jc unit 16-lead cerdip (q) 100 16 c/w 16-lead pdip (p ) 82 39 c/w 20-terminal lcc (rc) 76 36 c/w 16-lead soic (s ) 111 35 c/w 1 ja is s p e c if ied f o r wo rs t-cas e m o unting co nd itio ns , that is , ja i s speci f i e d f o r devi ce i n soc ket for c e r d i p, pd ip, a n d lcc pa cka g es; ja i s speci f i e d f o r devi ce so ld ere d t o pri n t e d ci rcui t boa r d for soic pa cka g e. s t r e s s es g r e a t e r t h a n t h os e li s t e d u n der a b s o l u t e m a xi m u m r a t i n g s ma y c a us e p e r m an en t da ma g e t o t h e de v i ce . this is a st re ss r a t i n g on l y and f u nc t i on a l op e r a t i o n of t h e d e v i c e a t t h e s e o r a n y o t h e r condi t i on s ab o v e t h o s e indi ca te d i n t h e o p er a t io n a l s e c t io n o f t h is sp e c if ic a t io n is no t im pl ie d . e x p o sur e t o a b s o l u te max i m u m r a t i ng co ndi t i on s fo r ex tende d p e r i o d s ma y a f fe c t de vice rel i a b i l i t y . esd caution esd (electrostatic discharge) sensitive device. ele c tros tatic charg e s as high as 4000 v readily accumulate on the human body and test eq uipment and can discharge wi thout detection. although this product features proprietary esd protection circu i try, permanent dama ge may occur on devices subjected to high energy electrostatic discharges. theref ore, prop er esd precautions a r e recommended to avoid perform a nce degradation or l o ss of functiona l ity.
dac08 r e v. c | pa ge 6 o f 2 0 pin connections 00268-c-002 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 v lc v? i out (msb) b1 b2 b3 b4 comp v ref (? ) v ref (+) v+ b8 (lsb) b7 b6 b5 dac08 top view (not to scale) i out 00268-c-003 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 v+ v ref (+) v ref (? ) comp v lc v? i out b8 (lsb) b7 b6 b5 b4 b3 b2 b1 (msb) dac08 top view (not to scale) i out 00268-c-004 4 5 6 7 8 18 17 16 15 14 20 19 1 2 3 9 10 11 12 13 v ref (+) b3 v lc nc v re f (?) nc = no connect comp v+ nc b7 i out v? i out nc (msb) b1 b2 b4 nc b5 b6 b 8 (l sb ) dac08 top view (not to scale) f i gure 2. 16-l e ad d u a l in-li n e p a ckag e (q and p suf f i x e s ) f i g u re 3. 16-l e ad s o ic (s suffi x) f i gur e 4 . d a c0 8 r c/ 88 3 20 -l e a d l c c (r c suffi x)
dac08 r e v. c | pa ge 7 o f 2 0 test and burn-in circuits 00268-c-006 0v t ypi c a l va l u es: r in =5 k ? +v in = 10v 4 2 14 15 16 optional resistor for offset inputs r l r l r ref +v ref r in 200 ? r p no cap r eq f i gure 5. p u ls ed r e f e r e nc e o p er ati o n 00268-c-007 16 15 14 13 12 11 10 9 dac08 c1 r1 c2 +18v c3 r1 = 9k ? c1 = 0.001 f c2, c3 = 0.01 f ? 18v min 12 3 4 5 6 7 8 f i gure 6. bu rn-in c i r c u i t
dac08 r e v. c | pa ge 8 o f 2 0 typical perf orm ance cha r acte ristics 00268-c-008 2.5v 0.5v ? 0.5ma i out ?2.5ma 200ns/division r eq 200 ? r l = 100 ? c c = 0 1v 100mv 200ns f i gu r e 7 . f a st p u l s ed re fe r e n c e op e r a t i o n 00268-c-009 0ma 1.0ma 2.0ma (0000|0000) (1111|1111) i ref = 2ma i out i out f i g u re 8. t r ue and comp le me nt ar y o u t p ut o p er at ion 00268-c-010 50ns/division 100mv 2v 50ns 5mv 2.4v 0.4v 0v 8 a 0 f i g u re 9. lsb swit c h ing 00268- c- 011 s e t tlin g tim e fix t u r e i fs =2 m a , r l =1 k ? 1/ 2l s b = 4 a 50ns/division all bits switched on 10mv 50ns 1v 2.4v 0.4v ? 1/2lsb 0v +1/2lsb output settling f i g u re 10. f u ll- s c al e s e t t ling ti me 00268-c-012 i ref , reference current (ma) i fs , outp ut curre nt (ma) 5 0 4 3 2 1 0 12 34 5 t a = t min to t max all b its high limit for v? = ? 5v limit for v ? = ? 15v f i gure 11. f u ll- s c al e cur r ent v s . r e fe r e nc e cu rrent 00268-c-013 i fs , output full-scale current (ma) p r op agation de lay (ns ) 500 400 300 200 100 0 0.005 0.02 0.10 0.50 2.00 1lsb = 7.8 a 1lsb = 61na 10.00 0.01 0.05 0.20 1.00 5.00 f i g u re 12. lsb pr op ag at i o n d e l a y v s . i fs
dac08 r e v. c | pa ge 9 o f 2 0 00268-c-014 frequency (mhz) relative output (db) 10 0.1 8 6 4 2 ?14 0.2 0.5 1.0 2.0 10.0 2 0 ?2 ?4 ?6 ?8 ?10 ?12 1 5.0 r14 = r15 = 1k ? r l 500v all bits on v r15 = 0v c c = 15pf, v in = 2.0v p-p centered at +1.0v large signal c c = 15pf, v in = 50mv p-p centered at +200mv small signal f i gure 13. r e ference input f r equ e nc y r e sponse 00268-c-015 v 15 , reference common-mode voltage (v) outp ut curre n t (ma) 4.0 ?1 4 3.6 3.2 2.8 2.4 0 18 2.0 1.6 1.2 0.8 0.4 ?10 ? 6 t a = t min to t max note: positive common-mode range is always (v+) ?1.5v i ref = 2ma v? = ? 15v v ? = ? 5v v+ = +15v all bits on i ref = 1ma i ref = 0.2ma ?2 2 6 10 14 f i gure 14. r e ference a m p co mm on-m ode r a nge 00268-c-016 logic input voltage (v) logic input ( a) 10 ?12 8 6 0 4 2 ? 8 ? 4 0 481 2 1 6 f i gure 15. l o gic inp u t current v s . input v o lt age 00268-c-017 temperature (c) v th ?v lc (v ) 2.0 ?5 0 1.6 1.2 0 0.8 0.4 0 5 0 100 150 f i g u re 16. v th ? v lc vs . t e m p er a t ur e 00268-c-018 o u t p u t vo l t a g e (v) outp ut curre nt (ma) 4.0 ?14 3.6 3.2 2.8 2.4 0 18 2.0 1.6 1.2 0.8 0.4 ?1 0 ? 6 t a = t min to t max i ref = 1ma i ref = 0.2ma ? 2 2 6 10 14 v ? = ? 15v v ? = ? 5v i ref = 2ma all bits on f i gure 17. o u tput current v s . o u tput v o lt ag e (o ut put v o lt ag e comp l i an c e ) 00268-c-019 temperature (c) o u tp u t v o lt a g e ( v ) 28 24 20 16 12 ?12 8 4 0 ?4 ?8 ?50 0 50 100 150 shaded area indicates permissible output voltage range for v? = ? 15v. i ref 2.0ma. for other v? or i ref , see output current vs. output voltage curve. f i g u re 18. o u t p ut v o lt ag e comp li ance v s . t e mper atur e
dac08 rev. c | page 10 of 20 00268-c-020 logic input voltage (v) outp ut curre nt (ma) 1.8 1.6 1.4 1.2 0 1.0 0.8 0.6 0.4 0.2 ?1 2 0 4 8 1 6 ?8 b4 b5 ?4 1 2 b3 b1 v? = ? 5v v? = ? 15v b2 i ref = 2.0ma note: b1 through b8 have identical transfer characteristics. bits are fully switched with less than 1/2 lsb error, at less than r 100mv from actual threshold. these switching points are guaranteed to lie between 0.8v and 2.0v over the operating temperature range (v lc = 0.0v). f i g u re 19. bit t r ans f er ch ar ac te ris t i c s 00268-c-021 v+, positive power supply (v dc) p o we r s u p p l y curre nt (ma) 10 8 7 6 0 5 4 3 2 1 2 9 4 6 8 12 14 16 18 i? i+ all bits high or low 01 0 2 0 2 0 f i g u re 20. p o wer s u p p ly v s . v + 00268-c-022 v? , negative power supply (v dc) p o we r s u p p l y curre nt (ma) 10 8 7 6 0 5 4 3 2 1 0? ?2 9 ?4 ?6 ?8 ?10 ? 12 ?14 ? 16 ?18 i+ bits may be high or low i? with i ref = 2ma i? with i ref = 1ma i ? with i ref = 0.2ma f i gure 21. p o wer s u p p ly cu rrent v s . v? 00268-c-023 temperature (c) p o we r s u p p l y curre nt (ma) 10 9 8 7 6 0 5 4 3 2 1 ?50 0 50 100 150 i? i+ all bits high or low i ref = 2.0ma v+ = +15v v? = ? 15v f i gure 22. p o wer s u p p ly cu rrent v s . t e mper atur e
dac08 rev. c | page 11 of 20 basic connections 00268-c-024 +v ref r ref i in r in v in 14 15 r15 (optional) high input impedance +v ref must be above peak positive swing of v in r ref r15 i ref peak negative swing of i in i ref r ref v in +v ref 14 15 14 15 f i g u re 23. ac c o mm odat i n g bi po la r r e f e r e nc es 00268-c-025 r15 i ref for fixed reference, ttl operation, typical values are: v ref = 10.000v r ref = 5.000k ? r15 = r ref c c = 0.01 f v lc = 0v (ground) msb b1 b2 b3 b4 b5 b6 b7 lsb b8 v? c c comp 0.1 f v? v+ v lc i o v+ v ref (+) +v ref r ref (r14) v ref (?) 14 15 4 2 56 78 9 1 0 1 1 1 2 31 6 1 3 1 i o 0.1 f i fr = i o + i o = i fr for a ll logic states +v ref r ref 255 256 f i gure 24. bas i c p o sitive r e fe r e nce o p er at ion 00268-c-026 i ref = 2.000ma msb b1 b2 b3 b4 b5 b6 b7 lsb b8 5.000k ? e o e o 5.000k ? 4 2 i o i o 14 full range half scale +lsb half scale half scale ? lsb zero scale +lsb zero scale b1 1 1 1 0 0 0 b2 1 0 0 1 0 0 b3 1 0 0 1 0 0 b4 1 0 0 1 0 0 b5 1 1 1 0 0 0 b6 1 0 0 1 0 0 b7 1 0 0 1 0 0 b8 1 1 0 1 1 0 i o 1.992 1.008 1.000 0.992 0.008 0.000 i o 0.000 0.984 0.992 1.000 1.984 1.992 e o ?9.960 ?5.040 ?5.000 ?4.960 ?0.040 0.000 e o ? 0.000 ? 4.920 ? 4.960 ? 5.000 ? 9.920 ? 9.960 f i gur e 2 5 . ba s i c uni p ol ar ne ga ti v e ope r a t i o n 00268-c-027 i ref = 2.000ma msb b1 b2 b3 b4 b5 b6 b7 lsb b8 10v 10k ? 10k ? e o e o 4 2 i o i o 14 pos. full range pos. full range ? lsb zero scale +lsb zero scale zero scale ?lsb neg. full scale +lsb neg. full scale b1 1 1 1 1 0 0 0 b2 1 1 0 0 1 0 0 b3 1 1 0 0 1 0 0 b4 1 1 0 0 1 0 0 b5 1 1 0 0 1 0 0 b6 1 1 0 0 1 0 0 b7 1 1 0 0 1 0 0 b8 1 0 1 0 1 1 0 e o ?9.920 ?9.840 ?0.080 0.000 +0.080 +9.920 +10.000 e o +10.000 +9.920 +0.160 +0.080 0.000 ?9.840 ?9.920 f i gure 26. bas i c b i pol a r o u tput o p er ation 00268-c-028 approx 5k ? 1v i ref (+) 2ma 39k ? 10k ? pot low t.c. 4.5k ? v ref 10v 14 15 f i gure 27. rec o mmended f u ll-s c a le adjustment c i rcuit 00268-c-029 r ref i o i o r15 ?v ref i fs ?v ref r ref note r ref sets i fs ; r15 is for bias current cancellation. 14 15 4 2 f i gure 28. bas i c ne gative r e fe r e n c e o p er at ion
dac08 rev. c | page 12 of 20 00268-c-030 e o *or adr01 4 2 6 5 10k ? +15v ? 15v ?15v +15v 5.0k ? 15v msb b1 b2 b3 b4 b5 b6 b7 lsb b8 5.000k ? 5.0k ? po s. full range zero scale neg. full scale +1lsb neg. full scale b1 1 1 0 0 b2 1 0 0 0 b3 1 0 0 0 b4 1 0 0 0 b5 1 1 0 0 b6 1 0 0 0 b7 1 0 0 0 b8 1 0 1 0 e o +4.960 0.000 ? 4.960 ? 5.000 10v ref01* v o ?v 4 2 i o i o v+ c c v lc ad8671 f i gure 29. o ffset binar y o p e r ation 00268-c-031 i o r l i o e o 0 to ?i fr r l i fr = i ref 255 256 4 2 ad8671 for complementary output (operation as a negative logic dac) . connect inverting input of op amp to i o (pin 2): connect i o (pin 4) to ground. f i gure 30. p o sit i ve l o w impedanc e o u tput o p er ation 00268-c-032 i o r l i o e o 0 to ?i fr r l i fr = i ref 255 256 4 2 ad8671 for complementary output (operation as a negative logic dac) . connect noninverting input of op amp to i o (pin 2): connect i o (pin 4) t o ground. f i gure 31. neg a tive l o w i m ped a nce o u tput o p er at ion 00268-c-033 1 tt l, d t l, v th =1 . 4 v 15v 9.1k ? 6.2k ? 0.1 f v lc 13k ? 39k ? ecl "a" 3k ? to pin 1 v lc 6.2k ? ? 5.2v 20k ? 20k ? v+ "a" 3k ? to pin 1 v lc r3 400 a c m o s , h t l , n mo s temperature compensating v lc circuits v th = v lc 1.4v 15v cmos v th = 7.6v v lc 2n3904 2n3904 2n3904 2n3904 f i gure 3 2 . int e r f acing wi th v a ri o u s l o gi c f a m i l i es
dac08 rev. c | page 13 of 20 application information reference amplifier setup the d a c08 is a m u l t i p ly in g d / a co n v er t e r i n w h ich t h e o u t p u t c u r r en t is t h e p r o d uc t o f a dig i t a l n u m b er an d t h e in pu t r e fer e n c e c u r r en t. th e r e fer e n c e c u r r en t ma y b e f i xe d o r ma y va r y f r o m n e a r ly zer o t o 4.0 ma. th e f u l l -s cal e o u t p u t c u r r en t i s a l i ne ar f u nc t i on of t h e re fe re nc e c u r r e n t a n d i s g i ve n b y ref fr i i = 256 255 w h er e i ref = i 14 i n p o s i t i ve re f e re nc e a p p l i c a t i o ns , an e x te r n a l p o s i t i ve re f e re n c e v o l t a g e fo r c es c u r r en t t h r o ug h r14 in t o t h e v re f ( + ) te r m i n a l (p in 14) o f th e ref e r e n c e am p l if ier . al t e r n a t i v e l y , a nega t i v e re f e re nc e m a y b e a p p l i e d to v re f(C) a t pi n 1 5 ; re f e re nc e c u r r e n t f l o w s f r om g r oun d t h rou g h r 1 4 i n to v ref(+) a s i n th e po s i ti v e re f e re nc e c a s e . t h i s ne g a t i ve re f e re nc e c o n n e c t i on h a s t h e ad van t a g e o f a ver y hig h i m p e da n c e p r es en t e d a t p i n 15. th e v o l t a g e a t p i n 1 4 is e q ual t o a nd t r acks t h e v o l t a g e a t p i n 15 d u e t o th e h i g h ga in o f th e in t e rnal r e f e r e n c e a m p l i f ie r . r15 (n o m i - nal l y eq ual t o r14) is us ed t o can c e l b i as c u r r en t er r o rs; r15 ma y b e el imi n a t e d wi t h o n ly a mi n o r i n cr e a s e in er r o r . bi p o la r r e fer e n c es ma y b e accommo da te d b y o f fs et t i n g v ref or p i n 15. th e neg a t i v e co mm on- m o d e ra n g e o f t h e r e fer e n c e a m plif ier is g i v e n b y v cm C = v ? pl us (i ref 1 k?) p l us 2.5 v . the p o si t i ve comm on- m o d e ran g e is v+ les s 1. 5 v . whe n a d c re f e re nc e i s u s e d , a re f e re nc e b y p a ss c a p a c i tor i s r e co mm e nde d . a 5.0 v t t l lo g i c su p p ly is n o t r e co mm e nde d as a r e fer e n c e. i f a r e gu la t e d p o w e r su p p ly is us e d as a r e fer e n c e, r14 sh o u ld be sp li t in t o tw o r e sis t o r s wi t h t h e j u n c tion b y p a s - s e d t o g r o u n d wi th a 0.1 f ca p a ci t o r . fo r m o s t ap p l i c at i o n s , t h e t i g h t r e l a t i o n s h i p b e t w e e n i ref a nd i fs e l im in a t es t h e ne e d fo r t r imming i ref . if r e q u i r e d , f u l l - s c a l e tr immin g can b e acco m p lis h e d b y ad j u s t in g t h e val u e o f r14, or b y usin g a p o t e n t iom e ter f o r r14. an im p r o v e d m e t h o d o f f u l l - s c ale t r i m min g t h a t e l i m ina t es p o t e n t iom e t e r t . c. ef fe c t s is sho w n i n t h e r e co mm e nde d f u l l -s c a le a d j u st me n t cir c u i t (f igur e 27). u s i n g l o we r v a lu e s of re f e re nc e c u r r e n t re d u c e s ne g a t i ve p o we r su p p ly c u r r e n t and i n c r e a s e s re fe re nc e am pl if ie r ne g a t i ve co mm on- m o d e r a n g e. t h e r e commende d r a n g e fo r o p er a t io n wi th a dc r e f e r e n c e c u r r en t is 0. 2 ma t o 4.0 ma. reference amplifier compensation for multiplying applications a c re f e re nc e a p p l i c a t i o ns re qu i r e t h e re f e re n c e am p l i f i e r to b e c o m p e n s a te d u s i n g a c a p a c i tor f r om pi n 1 6 to v ? . th e v a lu e of th i s c a pa ci t o r de pen d s o n th e im ped a n c e p r e s en t e d t o p i n 1 4 ; f o r r14 val u es o f 1.0 k?, 2.5 k? , a nd 5.0 k?, minim u m val u es of c c a r e 15 pf , 37 pf , a n d 75 pf . l a rg er val u es o f r14 r e q u ir e prop or t i on a t ely i n c r e a s e d v a lu e s of c c fo r p r o p er phas e ma rg in, so th e ra ti o o f c c (pf) t o r14 (k?) = 15. f o r fas t es t r e s p o n s e t o a p u ls e , lo w val u es o f r 14 ena b lin g smal l c c v a l u es s h o u ld be used . i f p i n 1 4 is d r i v en b y a h i g h im peda n c e s u c h a s a tra n s i s t o r curr e n t so ur ce , n o n e o f th e p r eced i n g v a l u es suf f i ce , a nd t h e a m plif ier m u st b e h e a v i l y co m p en s a t e d, w h ich de cr e a s e s o v er a l l b a ndwi d t h and sle w r a te. f o r r14 = 1 k? a n d c c = 15 pf , t h e r e fer e n c e a m pl i f ier s l e w s a t 4 ma/s, enab li n g a tra n si ti o n f r o m i ref = 0 t o i ref = 2 ma in 500 n s . o p era t ion w i t h p u ls e in pu ts t o t h e r e fer e n c e a m plif ier ca n b e a c c o m m o d at e d b y a n a l t e r n at e c o m p e n s a t i o n s c h e m e . t h i s t e c h n i q u e p r o v id es lo w e s t ful l -s c a l e tra n si ti o n tim e s. an in t e r n al cl am p a l l o w s qu i c k re c o ve r y of t h e re f e re nc e amp l i f i e r f r om a cu t o f f ( i ref = 0) co ndi tion. f u l l -s cale tra n s i tion (0 ma t o 2 ma) o c c u rs in 120 ns w h en t h e eq uivalen t im p e dance a t p i n 14 is 200 ? a n d c c = 0. this yie l ds a r e f e r e n c e s l e w r a t e o f 16 ma/s , w h ich is r e l a t i vely in d e p e nden t o f t h e r in an d v in val u es. logic inputs the d a c08 des i g n in co r p o r a t es a uniq u e log i c in p u t cir c ui t tha t ena b les dir e c t in t e r f ace t o al l p o p u la r log i c fa milies and p r o v ide s maxi m u m n o is e i m m u ni ty . thi s fe a t ure is made p o s s i b le b y t h e l a rg e in p u t s w ing ca p a b i li ty , 2 a log i c in p u t c u r r en t, an d com p lete l y ad j u s t a b le log i c thr e sh old v o l t a g e . f o r v? = ?15 v , the log i c in p u ts ma y swin g betw e e n ?10 v an d +18 v . this enab les dir e c t in t e r f ace wi t h 15 v cm os log i c, even w h en t h e d a c0 8 is p o w e r e d f r o m a 5 v s u p p l y . minim u m in p u t lo g i c swi n g a nd mi ni m u m lo g i c t h r e sh old vol t a g e a r e gi v e n b y v? + ( i ref 1 k?) + 2.5 v the log i c t h r e shold ma y b e ad j u s t e d o v er a w i de ra n g e b y placi n g a n a p p r o p r i a t e v o l t a g e a t t h e log i c t h r e sh old con t r o l p i n (p i n 1, v lc ) . fi g u r e 1 6 s h ow s t h e r e l a t i o n s h ip b e t w e e n v lc an d v th o v er t h e t e m p er a t ur e ra n g e , w i t h v th n o minal l y 1.4 a b o v e v lc . f o r t t l and dtl i n ter f ac e, si m p ly g r o u n d pi n 1. w h e n in t e rfa c in g ecl, a n i re f = 1 ma is r e co mmende d . f o r in ter f ac ing o t h e r logic fa mi lies, see f i gur e 32. f o r g e n e ral set-u p o f t h e log i c co n t r o l cir c ui t, n o te tha t p i n 1 s o ur ces 100 a typ i cal; e x te r n a l c i rc u i t r y shou l d b e de s i g n e d to a c c o m m o d a t e t h i s cu rr e n t .
dac08 rev. c | page 14 of 20 f a s t e s t set t li n g t i m e s a r e o b ta in ed w h en p i n 1 s e e s a l o w im p e dan c e. i f pin 1 is co n n e c te d to a 1 k? divi der , fo r ex a m ple, i t sh o u ld b e b y p a s s ed t o g r o u nd b y a 0.01 f c a p a ci t o r . analog ou tput currents b o th tr ue an d c o m p lemen t ed ou t p u t sin k c u r r en ts a r e p r o v ide d w h er e i o + i o = i fs . c u r r e n t ap p e a r s at t h e t r u e ( i o ) o u t p u t w h en a 1 (log ic hig h ) is a p plie d t o e a ch log i c in p u t. a s t h e b i na r y co u n t in creas e s, t h e s i n k c u r r en t a t pin 4 incr e a s e s p r op o r t i onal l y , in t h e fash io n of a p o si t i v e log i c d a c. w h en a 0 is a p plie d t o a n y i n p u t b i t, t h a t c u r r en t is t u r n e d o f f a t pin 4 a nd t u r n e d o n a t p i n 2. a decr easin g log i c co un t in cr eas e s i o as in a n e g a t i ve o r in ver t ed log i c d a c. b o th o u t p u t s ma y be us e d sim u l t an eo u s l y . i f one of t h e output s i s not re qu i r e d , it m u st b e c o n n e c te d to g r ou nd or to a p o i n t c a p a bl e of s o u r c i ng i fs ; do n o t le a v e an un us ed o u t p u t p i n o p en. b o t h out p ut s ha ve an e x t r e m ely w i de vol t age c o m p l i anc e e n a b l i n g f a s t d i r e ct cu rr e n t - t o - v o l ta g e c o n v e r s i o n th r o u g h a re s i stor t i e d to g r ou nd or ot he r vo lt age s o u r c e . p o s i t i ve c o m p l i - a n ce is 36 v ab o v e v? an d is in dep e nden t o f th e p o si ti v e su p p l y . n e ga t i v e com p l i an ce is g i v e n b y v? + ( i ref 1 k?) + 2.5 v the d u al o u t p u t s ena b le dou b le th e usual p e a k -to-p e a k lo ad swi n g w h e n dr ivi n g lo ads in q u asi-d i f f er en t i a l f a shio n . this fe a t ur e is esp e ci a l ly us ef u l in cab l e dr ivi n g, c r t def l e c t i o n and in o t h e r b a lan c e d a p pli c a t io n s such as dr ivi n g c e n t er - t a p p e d co ils a n d tran sfo r m e rs. power supplies the d a c08 o p era t es o v er a wi de ra n g e o f p o wer s u p p l y v o l t a g es f r o m a t o tal s u p p l y o f 9 v t o 36 v . w h en o p era t in g a t s u p p lies o f 5 v o r lo w e r , i ref 1 ma is r e co mm ended . l o w r e fer e n c e c u r r en t o p er a t io n de cr e a s e s p o w e r c o n s um pt io n and in cr eas e s n e ga t i v e co m p l i an ce ( f igur e 11 ) , r e fer e n c e a m pl if ier n e g a ti v e commo n -m o d e ra n g e (f igur e 14), nega ti v e log i c in p u t ra n g e ( f igure 15 ) , and neg a t i ve l o g i c t h re sh ol d r a n g e ( f igure 1 6 ) . fo r e x a m p l e , o p e r at i o n at ? 4 . 5 v w i t h i ref = 2 ma is n o t r e co mm e nde d b e c a us e n e g a t i ve o u t p ut co m p l i a n ce w o u l d b e r e d u ce d t o n e a r zer o . o p er a t ion f r o m lo w e r sup p lies is p o ssib le; h o we v e r , a t le ast 8 v t o tal m u s t be a p p l ie d t o ens u r e t u r n -o n o f th e i n t e rn al b i as n e t w o r k . s y mm et r i cal sup p lies a r e n o t r e q u ir e d , as t h e d a c08 is q u i t e in s e n s i t i v e t o var i a t ion s i n su p p ly v o l t a g e . b a t t e r y o p era t io n is f e a s i b l e beca use n o gr o u n d co nn ecti o n i s r e q u ir ed : h o w e v e r , a n a r ti f i cial gr o u n d ma y be used t o e n s u r e l o g i c swin g s , e t c . , r e m a in be tw e e n acc e p t a b le limi ts . p o wer co n s um p t io n is calc u l a t e d as fol l o w s: () ( ) ( ) ( ) ? ? + + + = v i v i p d a us ef u l f e a t ur e o f th e d a c08 desig n is tha t su p p l y c u r r en t is co n s t a n t an d i ndep e nden t o f in p u t lo g i c st a t es. this is us ef u l i n c r y p t o g r ap h i c ap p l i c at i o n s a n d f u r t h e r r e d u c e s t h e s i z e o f t h e p o we r su p p ly b y p a ss c a p a c i tors . temperature perfor mance the n o n l i n e a r i t y a n d m o n o t o ni ci ty sp e c if ic a t ion s o f t h e d a c0 8 a r e gua r a n t e e d to a p pl y o v er t h e en t i r e ra t e d op era t in g t e m p era - t u r e ra n g e . f u l l -s cale o u t p u t c u r r en t dr if t is lo w , typ i cal l y 10 p p m / c, wi t h zer o -s c a le o u t p u t c u r r e n t and dr if t e s s e n t ia l l y n e g l ig i b le com p a r ed t o 1/2 ls b . the t e m p er a t ure co ef f i cien t o f t h e r e fer e n c e r e sis t o r r14 sh o u l d ma t c h an d t r ack t h a t o f t h e o u t p u t r e sist o r fo r mini m u m o v era l l f u l l -s cale dr if t. s e t t lin g t i m e s of th e d a c08 de cr eas e a p p r o x i- ma te l y 10% a t C55c. a t +125c, a n in cr eas e of a b o u t 15 % is typ i c a l. the r e fer e n c e am plif ier m u st b e co m p e n s a t e d b y usin g a ca p a ci t o r f r o m p i n 16 t o v?. f o r f i xed r e f e r e n c e o p era t ion, a 0.01 f ca p a ci t o r is r e co mm en ded . f o r va r i ab le r e f e r e n c e a p plic a t io n s , r e fer t o t h e refer e n c e a m plif ier c o m p en s a t i on fo r m u l t i p ly in g a pplica t ion s s e c t io n. multiplying operation the d a c08 p r o v ide s exce l l en t m u l t i p l y in g p e r f o r ma n c e w i t h a n ext r eme l y li ne a r r e la t i o n shi p b e tw e e n i fs and i ref ov e r a ra n g e o f 4 a t o 4 ma. m o n o t o nic o p era t io n is ma in t a i n e d o v e r a ty p i ca l ra n g e o f i ref f r o m 100 a t o 4.0 ma. settling time the d a c08 is c a p a b l e o f ext r eme l y fas t s e t t ling t i m e s, typ i cal l y 85 n s a t i ref = 2.0 ma. j u dicio u s cir c ui t des i g n and ca r e f u l boa r d la y o u t m u s t be u s e d t o ob ta in full pe rf o r m a n c e po t e n t i a l d u r i n g test i n g and a p pli c a t io n. the lo g i c sw i t ch desig n ena b le s prop ag a t i o n d e l a y s of on ly 3 5 ns f o r e a ch of t h e 8 bit s . s e tt l i ng t i m e t o wi t h i n 1 / 2 ls b o f t h e lsb is t h er efo r e 35 n s , w i t h e a ch p r og r e s s i v e l y la rg er b i t t a k i n g succes si v e l y lo n g er . the ms b s e t t les in 85 n s , th us deter m ining th e o v eral l s e t t lin g t i m e o f 85 n s . s e t t lin g to 6-b i t acc u rac y r e q u ir es a b o u t 65 n s t o 70 n s . the o u t p u t ca p a ci t a n c e o f t h e d a c08, i n cl udin g t h e p a cka g e , is a p p r o x ima t e l y 15 pf; t h er efo r e t h e o u t p ut r c t i m e con s t a n t domi n a te s s e tt l i ng t i me i f r l > 500 ?. s e t t lin g t i m e and p r o p a g a t ion d e l a y a r e r e l a t i vely in s e n s i t i v e to lo g i c in p u t am pli t u d e and r i s e and fa l l t i m e s , d u e to t h e hig h ga in o f t h e log i c swi t ch es. s e t t l i n g t i m e als o r e ma in s ess e n t i a l l y co n s tan t f o r i ref val u es. th e p r i n ci p a l ad v a n t a g e o f hig h er i ref val u es lies in t h e a b il i t y t o a t ta in a g i v e n o u t p u t lev e l wi t h lo w e r lo ad r e sis t o r s, th us r e d u cin g the o u t p u t r c t i me co n s tan t . m e as ur in g t h e s e t t l i n g t i m e r e quir es t h e a b i l i t y t o acc u ra te l y r e s o l v e 4 a; t h er efo r e a 1 k? lo ad is n e e d e d to p r o v ide ad eq ua te d r i v e f o r m o s t oscillos co pes. th e set t lin g tim e f i xt ur e sho w n i n f i gur e 33 us es a cas c a d e desig n to p e r m i t dr i v in g a 1 k? lo ad wi t h les s tha n 5 pf o f p a rasi tic ca p a ci ta n c e a t t h e m e a s ur e m en t no de. a t i ref val u es o f les s tha n 1. 0 ma, exces s i v e
dac08 rev. c | page 15 of 20 r c dam p in g o f t h e ou t p u t is dif f i c u l t t o p r e v en t w h i l e main - t a ini n g ad e q u a te s e n s i t ivi t y . h o w e v e r , t h e m a j o r ca r r y f r o m 01111111 t o 10000000 p r o v ides a n acc u ra t e indic a t o r o f s e t t lin g t i m e . this co de cha n g e do es n o t r e q u ir e t h e n o r m al 6.2 t i m e co n s ta n t s t o s e t t le t o wi thi n 0.2% o f th e f i n a l v a l u e , a n d th us s e t t ling tim e is obs e r v ed a t l o wer val u es o f i ref . d a c 0 8 s w itch i n g t r ans i e n t s or g l i tc he s are ve r y l o w and c a n be f u r t her r e d u ced b y smal l ca p a ci ti v e lo ads a t th e o u t p u t a t a mi n o r s a cr if ice in s e t t lin g t i m e . f a st est o p era t i o n can b e ob ta in e d b y usin g sh o r t le ads, minimizin g o u t p u t c a p a ci tan c e a nd lo ad r e sistor va l u es, a nd b y ade q ua te b y p a ssin g a t t h e su p p ly , re fe re nc e, and v lc t e r m inals. s u p p l ies do n o t r e q u ir e la rg e e l e c t r ol yt ic b y p a s s c a p a ci to rs b e c a us e t h e s u p p l y c u r r en t dra i n is in dep e n d en t o f in p u t l o g i c s t a t es; 0.1 f ca p a ci t o rs a t t h e s u pp l y pi ns prov i d e f u l l t r ans i e n t prot e c t i o n . 00268-c-034 r ref +15v i out v in r15 + v ref 0.01 f ? 15v 1k ? 1 f v l minimum capacitance +5v 0.1 f f o r t u rn- o n , v l =2 . 7 v f o r t urn- o f f , v l =0 . 7 v 1k ? 1 f 2k ? 100k ? 50 f v out 1 probe 15k ? ?15v 0.1 f 14 15 4 2 5 13 6 7 8 9 10 11 12 31 6 0.1 f 0.1 f dac08 q2 0v 0v +0.4v ?0.4v q1 v cl 0.7v f i gure 3 3 . s e ttli n g t i m e m e a s u r em ent
dac08 rev. c | page 16 of 20 adi current output dacs table 4 lists the latest dacs available from analog devices. table 4. model bits outputs interface package comments ad5425 8 1 spi, 8-bit load msop-10 fast 8-bit load; see also ad5426 ad5426 8 1 spi msop-10 see also ad5425 fast load ad5450 8 1 spi sot23-8 see also ad5425 fast load ad5424 8 1 parallel tssop-16 ad5429 8 2 spi tssop-16 ad5428 8 2 parallel tssop-20 ad5432 10 1 spi msop-10 ad5451 10 1 spi sot23-8 ad5433 10 1 parallel tssop-20 ad5439 10 2 spi tssop-16 ad5440 10 2 parallel tssop-24 ad5443 12 1 spi msop-10 see also ad5452 and ad5444 ad5452 12 1 spi sot23-8 higher accuracy version of ad5443; see also ad5444 ad5445 12 1 parallel tssop-20 ad5444 12 1 spi msop-10 higher accuracy version of ad5443; see also ad5452 ad5449 12 2 spi tssop-16 ad5415 12 2 spi tssop-24 uncommitted resistors ad5447 12 2 parallel tssop-24 ad5405 12 2 parallel lfcsp-40 uncommitted resistors ad5453 14 1 spi sot23-8 ad5553 14 1 spi msop-8 ad5556 14 1 parallel tssop-28 ad5446 14 1 spi msop-10 msop version of ad5453; compatible with ad5443, ad5432, ad5426 ad5555 14 2 spi tssop-16 ad5557 14 2 parallel tssop-38 ad5543 16 1 spi msop-8 ad5546 16 1 parallel tssop-28 ad5545 16 2 spi tssop-16 ad5547 16 2 parallel tssop-38
dac08 rev. c | page 17 of 20 outline dimensions 16 1 8 9 0.295 (7.49) 0.285 (7.24) 0.275 (6.99) 0.100 (2.54) bsc seating plane 0.015 (0.38) min 0.180 (4.57) max 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.060 (1.52) 0.050 (1.27) 0.045 (1.14) 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.785 (19.94) 0.765 (19.43) 0.745 (18.92) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design compliant to jedec standards mo-095ac f i gure 34. 16-l ead pdi p (n-16) d i mensions sh o w n in inc h es and ( m m) 16 18 9 0.310 (7.87) 0.220 (5.59) pin 1 0.005 (0.13) min 0.098 (2.49) max 15 0 0.320 (8.13) 0.290 (7.37) 0.015 (0.38) 0.008 (0.20) seating plane 0.200 (5.08) max 0.840 (21.34) max 0.150 (3.81) min 0.200 (5.08) 0.125 (3.18) 0.023 (0.58) 0.014 (0.36) 0.100 (2.54) bsc 0.070 (1.78) 0.030 (0.76) 0.060 (1.52) 0.015 (0.38) controlling dimensions are in inches; millimeters dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design f i gure 35. 16-l ead cerdip ( q -16) d i mensions sh o w n in inc h es and ( m m) controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design compliant to jedec standards ms-012ac 16 9 8 1 4.00 (0.1575) 3.80 (0.1496) 10.00 (0.3937) 9.80 (0.3858) 1.27 (0.0500) bsc 6.20 (0.2441) 5.80 (0.2283) seating plane 0.25 (0.0098) 0.10 (0.0039) 0.51 (0.0201) 0.31 (0.0122) 1.75 (0.0689) 1.35 (0.0531) 8 0 0.50 (0.0197) 0.25 (0.0098) 1.27 (0.0500) 0.40 (0.0157) 0.25 (0.0098) 0.17 (0.0067) coplanarity 0.10 45 f i gure 36. 16-l ead soic (r -16a) d i mensions sh o w n in inc h es and ( m m) 1 20 4 9 8 13 19 14 3 18 bottom view 0.028 (0.71) 0.022 (0.56) 45 typ 0.015 (0.38) min 0.055 (1.40) 0.045 (1.14) 0.050 (1.27) bsc 0.075 (1.91) ref 0.011 (0.28) 0.007 (0.18) r typ 0.095 (2.41) 0.075 (1.90) 0.100 (2.54) ref 0.200 (5.08) ref 0.150 (3.81) bsc 0.075 (1.91) ref 0.358 (9.09) 0.342 (8.69) sq 0.358 (9.09) max sq 0.100 (2.54) 0.064 (1.63) 0.088 (2.24) 0.054 (1.37) controlling dimensions are in inches; millimeters dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design f i g u re 37. 2 0 - t e r m i nal l e ad les s chip carr ie r ( e -2 0) d i mensions sh o w n in inc h es and ( m m)
dac08 rev. c | page 18 of 20 ordering guide model 1 nl temperature range package description package option no. parts per container dac08aq 0.10% ? 55c to +125c cerdip-16 q-16 25 dac08aq/883c 2 0.10% ? 55c to +125c cerdip-16 q-16 25 dac08hp 0.10% 0c to 70c pdip-16 n-16 25 dac08hq 0.10% 0c to 70c cerdip-16 q-16 25 dac08q 0.19% ? 55c to +125c cerdip-16 q-16 25 dac08rc/883c 2 0.19% ? 55c to +125c lcc-20 e-20 55 dac08ep 0.19% 0c to 70c pdip-16 n-16 25 dac08eq 0.19% 0c to 70c cerdip-16 q-16 25 dac08es 0.19% 0c to 70c soic-16 r-16a (narrow body) 47 dac08es-reel 0.19% 0c to 70c soic-16 r-16a (narrow body) 2500 dac08esz 3 0.19% 0c to 70c soic-16 r-16a (narrow body) 47 dac08esz-reel 3 0.19% 0c to 70c soic-16 r-16a (narrow body) 2500 dac08cp 0.39% ? 40c to +85c pdip-16 n-16 25 dac08cpz 3 0.39% ? 40c to +85c pdip-16 n-16 25 dac08cs 0.39% ? 40c to +85c soic-16 r-16a (narrow body) 47 dac08cs-reel 0.39% ? 40c to +85c soic-16 r-16a (narrow body) 2500 dac08csz 3 0.39% ? 40c to +85c soic-16 r-16a (narrow body) 47 dac08csz-reel 3 0.39% ? 40c to +85c soic-16 r-16a (narrow body) 2500 1 devices processed in to tal compliance to mil-std-883. consul t the factory for the 883 data sheet. 2 for availability and burn-in information on the soic and plcc packages, contact your local sales office. 3 z = pb-free part.
dac08 rev. c | page 19 of 20 notes
dac08 rev. c | page 20 of 20 notes ? 2004 analo g de vices, inc. all rights reserve d . tra d em arks and registered tra d ema r ks are the prop erty of their respective owners . c00268C0 C 11/04(c)

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