general description maxim? redesigned dg444/dg445 analog switches now feature on-resistance matching (4 ? max) between switches and guaranteed on-resistance flatness over the signal range (9 ? max). these low on-resistance switches conduct equally well in either direction. they guarantee low charge injection (10pc max), low power consumption (35? max), and an electrostatic dis- charge (esd) tolerance of 2000v (min) per method 3015.7. the new design offers lower off-leakage current over temperature (less than 5na at +85?). the dg444/dg445 are quad, single-pole/single-throw (spst) analog switches. the dg444 has four normally closed switches and the dg445 has four normally open switches. switching times are less than 250ns for t on and less than 70ns for t off . operation is from a single +10v to +30v supply, or bipolar ?.5v to ?0v sup- plies. maxim? improved dg444/dg445 continue to be fabricated with a 44v silicon-gate process. ________________________applications new features ? plug-in upgrades for industry-standard dg444/dg445 ? improved r on match between channels (4 ? max) ? guaranteed r flat(on) over signal range (9 ? max) ? improved charge injection (10pc max) ? improved off-leakage current over temperature (< 5na at +85?) ? withstand esd (2000v min) per method 3015.7 existing features ? low r ds(on) (85 ? max) ? single-supply operation +10v to +30v bipolar-supply operation 4.5v to 20v ? low power consumption (35 w max) ? rail-to-rail signal handling ? ttl/cmos-logic compatible ordering information dg444/dg445 improved, quad, spst analog switches ________________________________________________________________ maxim integrated products 1 dip/so switches shown for logic "0" input dg444 logic switch 0 1 on off 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 in2 d2 s2 v+ v- s1 d1 in1 dg444 v l s3 d3 in3 in4 d4 s4 gnd top view 16 d1 15 in1 14 in2 13 d2 5 d4 6 in4 7 in3 8 d3 dg444 2 v- 1 s1 3 gnd 4 s4 11 v+ 12 s2 10 v l 9 s3 thin qfn 19-4705; rev 4; 6/04 pin configurations/functional diagrams/truth tables ordering information continued at end of data sheet. * contact factory for dice specifications. for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. pin configurations continued at end of data sheet. sample-and-hold circuits test equipment heads-up displays guidance and control systems military radios communication systems battery-operated systems pbx, pabx audio signal routing modems/faxes part temp range pin-package dg444 cj 0? to +70? 16 plastic dip dg444cy 0? to +70? 16 narrow so dg444c/d 0? to +70? dice* dg444dj -40? to +85? 16 plastic dip dg444dy -40? to +85? 16 narrow so
dg444/dg445 improved, quad, spst analog switches 2 _______________________________________________________________________________________ parameter symbol units r flat(on) 15 ? 9 ? r ds(on) 4 100 ? -0.50 +0.01 +0.50 source leakage current (note 5) i s(off) -5 +5 na -0.50 +0.01 +0.50 drain off-leakage current (note 5) i d(off) -5 +5 na analog signal range -15 +15 v drain-source on-resistance r ds(on) 50 85 -0.50 +0.08 +0.50 drain on-leakage current (note 5) -10 +10 na i inh -0.5 -0.00001 +0.5 ? i inl -0.5 -0.00001 +0.5 ? conditions (note 3) v analog t a = +25? v+ = 13.5v, v- = -13.5v, v d = ?.5v, i s = -10ma t a = t min to t max on-resistance match between channels (note 4) t a = +25? 5 ? t a = t min to t max v d = ?0v, i s = -10ma t a = +25? t a = t min to t max on-resistance flatness (note 4) v d = ?v, i s = -10ma t a = +25? t a = t min to t max v+ = 16.5v, v- = -16.5v, v d = ?5.5v, v s = 15.5v i d(on) or i s(on) input current with input voltage high input current with input voltage low t a = +25? t a = t min to t max t a = +25? t a = t min to t max v in = 2.4v, all others = 0.8v v in = 0.8v, all others = 2.4v v+ = 16.5v, v- = -16.5v, v d = ?5.5v, v s = 15.5v v+ = 16.5v, v- = -16.5v, v d = ?5.5v, v s = ?5.5v min typ max (note 2) absolute maximum ratings electrical characteristics?ual supplies (v+ = 15v, v- = -15v, v l = 5v, gnd = 0, v inh = 2.4v, v inl = 0.8v, t a = t min to t max , unless otherwise noted.) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. (voltage referenced to v-) v+........................................................................................44v gnd ....................................................................................25v v l ..................................................(gnd - 0.3v) to (v+ + 0.3v) digital inputs v s , v d (note 1).......(v- - 2v) to (v+ + 2v) or 30ma (whichever occurs first) continuous current (any terminal) ......................................30ma peak current, s or d (pulsed at 1ms, 10% duty cycle max) .100ma continuous power dissipation (t a = +70?) 6-pin narrow so (derate 8.70mw/? above +70?) ...696mw 16-pin pdip (derate 10.53mw/? above +70?)..........842mw 16-pin thin qfn (derate 33.3mw/? above +70?) ..2667mw operating temperature ranges dg444c/dg445c ................................................0? to +70? dg444d, e/dg445d, e ....................................-40? to +85? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) .................................+300? note 1: signals on s, d, or in exceeding v+ or v- are clamped by internal diodes. limit forward current to maximum current rating. input switch
dg444/dg445 improved, quad, spst analog switches _______________________________________________________________________________________ 3 electrical characteristics?ual supplies (continued) (v+ = 15v, v- = -15v, v l = 5v, gnd = 0, v inh = 2.4v, v inl = 0.8v, t a = t min to t max , unless otherwise noted.) min typ max (note 2) dg444, v s = ?0v, figure 2 v s = ?0v, figure 2 turn-off time turn-on time all channels on or off, v+ = 16.5v, v- = -16.5v, v in = 0v or 5v t a = t min to t max t a = +25? all channels on or off, v+ = 16.5v, v- = -16.5v, v in = 0v or 5v logic supply current t a = t min to t max t a = +25? all channels on or off, v+ = 16.5v, v- = -16.5v, v in = 0v or 5v t a = t min to t max ? -5 +5 t a = +25? negative supply current t a = t min to t max all channels on or off, v+ = 16.5v, v- = -16.5v, v in = 0v or 5v t a = +25? v+, v- conditions ns 90 120 t off ns 150 250 t on -1 -0.001 +1 i+ positive supply current v ?.5 ?0.0 power-supply range ? -5 +5 i gnd ground current -1 -0.0001 +1 ? -5 +5 -1 -0.0001 +1 i- -1 -0.001 +1 ? -5 +5 i l units symbol parameter t a = +25? t a = +25? c l = 1nf, v gen = 0, r gen = 0 ? , figure 3 t a = +25? charge injection (note 3) pc 510 q r l = 50 ? , c l = 5pf, f = 1mhz, figure 4 t a = +25? off-isolation rejection ratio (note 6) db 60 oirr r l -50 ? , c l = 5pf, f = 1mhz, figure 5 t a = +25? crosstalk (note 7) db 100 f = 1mhz, figure 6 t a = +25? source off-capacitance pf 4 c s(off) f = 1mhz, figure 6 t a = +25? drain off-capacitance pf 4 c d(off) f = 1mhz, figure 7 t a = +25? source on-capacitance pf 16 c s(on) f = 1mhz, figure 7 t a = +25? drain on-capacitance pf 16 c d(on) dg445, v s = ?0v, figure 2 t a = +25? 110 170 ns switch input
dg444/dg445 improved, quad, spst analog switches 4 _______________________________________________________________________________________ electrical characteristics?ingle supply (v+ = 12v, v- = 0, v l = 5v, gnd = 0, v inh = 2.4v, v inl = 0.8v, t a = t min to t max , unless otherwise noted.) note 2: typical values are for design aid only , are not guaranteed, and are not subject to production testing. the algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in this data sheet. note 3: guaranteed by design. note 4: on-resistance match between channels and flatness are guaranteed only with bipolar-supply operation. flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured at the extremes of the speci- fied analog signal range. note 5: leakage parameters i s(off) , i d(off) , i d(on) , and is (on) are 100% tested at the maximum rated hot temperature and guaranteed at +25?. note 6: off-isolation rejection ratio = 20log (v d /v s ), v d = output, v s = input to off switch. note 7: between any two switches. __________________________________________typical operating characteristics (t a = +25?, unless otherwise noted.) on-leakage currents on-leakage (na) -2 -1 0 1 2 -15 0 15 v s , v d (v) t a = +125 c t a = +85 c v+ = 15v v- = -15v dg444/5-1 -10 -5 510 off-leakage currents off-leakage (na) -1 0 -0.5 0.5 1 v s , v d (v) dg444/5-2 -15 0 15 -10 -5 510 t a = +125 c v+ = 15v v- = -15v t a = +85 c switching threshold vs. bipolar supply voltage v in (v) 0 0.5 1.5 2.0 2.5 3.0 3.5 5 10 15 20 bipolar supply voltage (v) dg444/5-3 in hi min in low max c l = 1nf, v gen = 0, r gen = 0 ? , figure 3 charge injection (note 3) q pc 510 t a = +25? turn-off time t off ns v s = 8v, figure 2 60 200 t a = +25? turn-on time t on ns v s = 8v, figure 2 300 400 t a = +25? v+ = 10.8v; v l = 5.25v; v d = 3v, 8v; i s = -10ma drain-source on-resistance 100 160 ? v analog all channels on or off, v in = 0v or 5v ? -5 +5 i l logic supply current -1 +0.001 +1 t a = t min to t max t a = +25? all channels on or off, v in = 0v or 5v ? -5 +5 i gnd ground current -1 -0.0001 +1 t a = t min to t max t a = +25? all channels on or off, v in = 0v or 5v ? -5 +5 i- negative supply current -1 -0.0001 +1 t a = t min to t max t a = +25? (note 3) all channels on or off, v in = 0v or 5v conditions v 012 analog signal range ? -5 +5 i+ power-supply current -1 +0.001 +1 t a = t min to t max t a = +25? units min typ max (note 2) symbol parameter t a = +25? power-supply range v+, v- 10.8 24.0 v r ds(on) t a = t min to t max 200 dynamic switch supply
dg444/dg445 improved, quad, spst analog switches _______________________________________________________________________________________ 5 t ypical operating characteristics (t a = +25?, unless otherwise noted.) on-resistance vs. v d and unipolar-supply voltage 0 25 50 75 100 125 0510 15 20 v d (v) r ds(on) ( ? ) dg444/5-4 v+ = 10v v+ = 15v v+ = 20v 150 v+ = 5v on-resistance vs. v d , unipolar- supply voltage and temperature 0 25 50 75 100 125 150 r ds(on) ( ? ) 04 812 v d (v) dg444/5-7 t a = +125 c t a = +25 c t a = -40 c v+ = 12v v- = 0v on-resistance vs. v d and bipolar-supply voltage r ds(on) ( ? ) 30 60 90 120 -20 -10 0 10 20 v d (v) 0 dg444/5-5 5v 10v 15v 20v on-resistance vs. v d , bipolar- supply voltage and temperature r ds(on) ( ? ) 0 20 40 60 80 100 v d (v) dg444/5-6 t a = +125 c t a = -55 c t a = +25 c v+ = 15v, v- = -15v -15 0 15 -10 -5 510 switching time vs. bipolar-supply voltage time (ns) 0 40 80 120 160 5 10 15 20 bipolar-supply voltage (v) dg444/5-8 t on t off switching time vs. unipolar-supply voltage time (ns) 0 50 100 150 200 10 15 20 25 unipolar-supply voltage (v) v- = 0v dg444/5-9 t on t off charge injection vs. v d voltage q (pc) -20 0 20 -15 -10 0 10 15 v d (v) dg444/5-10 v+ = 15v v- = -15v c l = 1nf charge injection vs. v d voltage q (pc) -10 0 0510 15 v d (v) dg444/5-11 v+ = 12v v- = 0v c l = 1nf 10
dg444/dg445 improved, quad, spst analog switches 6 _______________________________________________________________________________________ t off 0.8 x v out v out 0.8 x v out t f < 20ns t r < 20ns 50% 0v 0v +3v switch output logic input waveform is inverted for switches that have the opposite logic sense. t on switch input logic input +3v in +5v v- -15v ( ) r l c l v out s c l includes fixture and stray capacitance. gnd repeat test for channels 2, 3, and 4. v out = v d r l r l + r ds(on) logic input v l +15v v+ d dg444 dg445 figure 2. switching time applications information general operation switches are open when power is off. in, d, and s should not exceed v+ or v-, even with the power off. switch leakage is from each analog switch terminal to v+ or v-, not to other switch terminals. operation with supply voltages other than 15v using supply voltages other than ?5v will reduce the analog signal range. the dg444/dg445 switches oper- ate with ?.5v to ?0v bipolar supplies or with a +10v to +30v single supply; connect v- to 0v when operating with a single supply. also, all device types can operate with unbalanced supplies such as +24v and -5v. v l must be connected to +5v to be ttl compatible, or to v+ for cmos-logic level inputs. the typical operating characteristics graphs show typical on-resistance with ?0v, ?5v, ?0v, and ?v supplies. (switching times increase by a factor of two or more for operation at ?v.) overvoltage protection proper power-supply sequencing is recommended for all cmos devices. do not exceed the absolute maximum ratings because stresses beyond the list- ed ratings may cause permanent damage to the devices. always sequence v+ on first, followed by v l , v-, and logic inputs. if power-supply sequenc- ing is not possible, add two small, external signal diodes in series with supply pins for overvoltage protection (figure 1). adding diodes reduces the analog signal range to 1v below v+ and 1v above v-, but low switch resistance and low leakage char- acteristics are unaffected. device operation is unchanged, and the difference between v+ and v- should not exceed +44v. v+ d v- s v g figure 1. overvoltage protection using external blocking diodes _____________________pin description pin dip/so thin qfn name function 1, 16, 9, 8 15, 14, 7, 6 in1?n4 logic control inputs 2, 15, 10, 7 16, 13, 8, 5 d1?4 drain outputs 3, 14, 11, 6 1, 12, 9 4 s1?4 source outputs 42v- negative-supply voltage input 53 gnd ground 12 10 vl logic-supply voltage input 13 11 v+ positive-supply- voltage input?onnected to substrate ?p pad exposed pad connect pad to v+
dg444/dg445 improved, quad, spst analog switches _______________________________________________________________________________________ 7 ? v out off on off v out in dg444 in dg445 off off on q = ? v out c l -15v v- v+ in gnd s +15v r gen v gen v in = +3v c l v out v l +5v d dg444 dg445 figure 3. charge injection network analyzer signal generator r gen = 50 ? d s gnd r l 10dbm 10nf v+ +15v in 0v or +2.4v v- -15v 10nf +5v v l dg444 dg445 figure 4. off-isolation rejection ratio network analyzer signal generator r gen = 50 ? 0v or +2.4v in d gnd r l 10dbm 10nf +15v d in s nc 0v or +2.4v 50 ? v- -15v 10nf +5v s v l v+ dg444 dg445 figure 5. crosstalk capacitance meter d s gnd 10nf +15v in 0v or +2.4v v- -15v 10nf f = 1mhz +5v v l v+ dg444 dg445 figure 6. source/drain off-capacitance d s gnd 10nf +15v in 0v or +2.4v v- -15v 10nf v+ +5v v l v d dg444 dg445 capacitance meter f = 1mhz figure 7. source/drain on-capacitance
ordering information (continued) dg444/dg445 improved, quad, spst analog switches 8 _______________________________________________________________________________________ pin configurations/functional diagrams (continued) top view 16 d1 15 in1 14 in2 13 d2 5 d4 6 in4 7 in3 8 d3 dg445 2 v- 1 s1 3 gnd 4 s4 11 v+ 12 s2 10 v l 9 s3 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 in2 d2 s2 v+ v- s1 d1 in1 dg445 v l s3 d3 in3 in4 d4 s4 gnd dip/so dg445 logic switch 0 1 off on thin qfn * contact factory for dice specifications. part temp range pin-package dg444ete -40? to +85? 16 thin qfn (5mm x 5mm) dg445 cj 0? to +70? 16 plastic dip dg445cy 0? to +70? 16 narrow so dg445c/d 0? to +70? dice* dg445dj -40? to +85? 16 plastic dip dg445dy -40? to +85? 16 narrow so dg445ete -40? to +85? 16 thin qfn (5mm x 5mm)
dg444/dg445 improved, quad, spst analog switches _______________________________________________________________________________________ 9 pdipn.eps package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .)
dg444/dg445 improved, quad, spst analog switches maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2004 maxim integrated products printed usa is a registered trademark of maxim integrated products. improved, quad, spst analog switches qfn thin.eps d2 (nd-1) x e e d c pin # 1 i.d. (ne-1) x e e/2 e 0.08 c 0.10 c a a1 a3 detail a e2/2 e2 0.10 m c a b pin # 1 i.d. b 0.35x45 d/2 d2/2 l c l c e e l c c l k l l detail b l l1 e xxxxx marking g 1 2 21-0140 package outline, 16, 20, 28, 32l thin qfn, 5x5x0.8mm -drawing not to scale- l common dimensions 3.35 3.15 t2855-1 3.25 3.35 3.15 3.25 max. 3.20 exposed pad variations 3.00 t2055-2 3.10 d2 nom. min. 3.20 3.00 3.10 min. e2 nom. max. ne nd pkg. codes 1. dimensioning & tolerancing conform to asme y14.5m-1994. 2. all dimensions are in millimeters. angles are in degrees. 3. n is the total number of terminals. 4. the terminal #1 identifier and terminal numbering convention shall conform to jesd 95-1 spp-012. details of terminal #1 identifier are optional, but must be located within the zone indicated. the terminal #1 identifier may be either a mold or marked feature. 5. dimension b applies to metallized terminal and is measured between 0.25 mm and 0.30 mm from terminal tip. 6. nd and ne refer to the number of terminals on each d and e side respectively. 7. depopulation is possible in a symmetrical fashion. 8. coplanarity applies to the exposed heat sink slug as well as the terminals. 9. drawing conforms to jedec mo220, except exposed pad dimension for t2855-1, t2855-3 and t2855-6. notes: symbol pkg. n l1 e e d b a3 a a1 k 10. warpage shall not exceed 0.10 mm. jedec t1655-1 3.20 3.00 3.10 3.00 3.10 3.20 0.70 0.80 0.75 4.90 4.90 0.25 0.25 0 -- 4 whhb 4 16 0.35 0.30 5.10 5.10 5.00 0.80 bsc. 5.00 0.05 0.20 ref. 0.02 min. max. nom. 16l 5x5 3.10 t3255-2 3.00 3.20 3.00 3.10 3.20 2.70 t2855-2 2.60 2.60 2.80 2.70 2.80 l 0.30 0.50 0.40 -- - -- - whhc 20 5 5 5.00 5.00 0.30 0.55 0.65 bsc. 0.45 0.25 4.90 4.90 0.25 0.65 - - 5.10 5.10 0.35 20l 5x5 0.20 ref. 0.75 0.02 nom. 0 0.70 min. 0.05 0.80 max. -- - whhd-1 28 7 7 5.00 5.00 0.25 0.55 0.50 bsc. 0.45 0.25 4.90 4.90 0.20 0.65 - - 5.10 5.10 0.30 28l 5x5 0.20 ref. 0.75 0.02 nom. 0 0.70 min. 0.05 0.80 max. -- - whhd-2 32 8 8 5.00 5.00 0.40 0.50 bsc. 0.30 0.25 4.90 4.90 0.50 - - 5.10 5.10 32l 5x5 0.20 ref. 0.75 0.02 nom. 0 0.70 min. 0.05 0.80 max. 0.20 0.25 0.30 down bonds allowed no yes 3.10 3.00 3.20 3.10 3.00 3.20 t2055-3 3.10 3.00 3.20 3.10 3.00 3.20 t2055-4 t2855-3 3.15 3.25 3.35 3.15 3.25 3.35 t2855-6 3.15 3.25 3.35 3.15 3.25 3.35 t2855-4 2.60 2.70 2.80 2.60 2.70 2.80 t2855-5 2.60 2.70 2.80 2.60 2.70 2.80 t2855-7 2.60 2.70 2.80 2.60 2.70 2.80 3.20 3.00 3.10 t3255-3 3.20 3.00 3.10 3.20 3.00 3.10 t3255-4 3.20 3.00 3.10 no no no no no no no no yes yes yes yes 3.20 3.00 t1655-2 3.10 3.00 3.10 3.20 yes no 3.20 3.10 3.00 3.10 t1655n-1 3.00 3.20 3.35 3.15 t2055-5 3.25 3.15 3.25 3.35 y 3.35 3.15 t2855n-1 3.25 3.15 3.25 3.35 n 3.35 3.15 t2855-8 3.25 3.15 3.25 3.35 y 3.20 3.10 t3255n-1 3.00 no 3.20 3.10 3.00 l 0.40 0.40 ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** see common dimensions table 0.15 11. marking is for package orientation reference only. g 2 2 21-0140 package outline, 16, 20, 28, 32l thin qfn, 5x5x0.8mm -drawing not to scale- 12. number of leads shown are for reference only. package information (continued) (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .)
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