attenu a tors - digit a l - chip 1 1 - 1 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC941LP4 / HMC941LP4e 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz v00.0910 electrical specifcations, t a = +25 c, with vdd = +5v, vss = -5v, p0 - p4 = 0/ +5v t he h mc941 lp 4 / h mc941 lp 4 e is ideal for: ? fiber o ptics & broadband t elecom ? microwave r adio & v s a t ? military r adios, r adar & e cm ? s pace applications ? s ensors ? t est & measurement e quipment 0.5 db ls b s teps to 15.5 db s ingle p ositive control l ine p er bit 0.5 db t ypical bit e rror h igh i nput ip 3: +45 dbm 16mm 2 l eadless s m t p lastic p ackage t he h mc941 lp 4 & h mc941 lp 4 e are broadband 5-bit g aas i c digital attenuators in low cost leadless sur - face mount packages. covering 0.1 to 33.0 gh z, the insertion loss is less than 4 db typical. t he attenuator bit values are 0.5 ( ls b), 1, 2, 4, 8, for a total attenu - ation of 15.5 db. attenuation accuracy is excellent at 0.3 db typical step error with an iip 3 of +45 dbm. five control voltage inputs, toggled between +5v and 0v, are used to select each attenuation state. p arameter frequency ( gh z) min. t yp. max. u nits i nsertion l oss 0.1 - 18.0 gh z 18.0 - 26.5 gh z 26.5 - 33.0 gh z 3.0 4.0 5.0 4.5 6.0 6.5 db db attenuation r ange 0.1 - 33.0 gh z 15.5 db r eturn l oss ( r f1 & r f2, all atten. s tates) 0.1 - 33.0 gh z 12 db attenuation accuracy: ( r eferenced to i nsertion l oss) 0.5 - 7.5 db s tates 8 - 15.5 db s tates 0.1 - 33.0 gh z 0.1 - 33.0 gh z (0.3 + 4%) of atten. s etting max (0.3 + 8%) of atten. s etting max db db i nput p ower for 0.1 db compression 0.1 - 0.5 gh z 0.5 - 33.0 gh z 22 27 dbm dbm i nput t hird o rder i ntercept p oint ( t wo- t one i nput p ower= 0 dbm e ach t one) 0.1 - 0.5 gh z 0.5 - 33.0 gh z 42 45 dbm dbm s witching characteristics t rise , tfa ll (10/90% r f) t on /t o ff (50% c tl to 10/90% r f) 0.1 - 33.0 gh z 60 90 ns ns i dd 0.1 - 33.0 gh z 2.5 4.5 6.5 ma i ss 0.1 - 33.0 gh z -7.0 -5.0 -3.0 ma general description features functional diagram typical applications
attenu a tors - digit a l - chip 1 1 - 2 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com input return loss ( o nly major s tates are s hown) output return loss ( o nly major s tates are s hown) insertion loss vs. temperature normalized attenuation ( o nly major s tates are s hown) bit error vs. frequency ( o nly major s tates are s hown) bit error vs. attenuation state -14 -12 -10 -8 -6 -4 -2 0 0 5 10 15 20 25 30 35 40 +25 c +85 c -40 c insertion loss (db) frequency (ghz) -40 -30 -20 -10 0 0 5 10 15 20 25 30 35 40 return loss (db) frequency (ghz) -40 -30 -20 -10 0 0 5 10 15 20 25 30 35 40 return loss (db) frequency (ghz) -20 -15 -10 -5 0 0 5 10 15 20 25 30 35 40 normalized attenuation (db) frequency (ghz) -0.8 -0.4 0 0.4 0.8 1.2 0 4 8 12 16 5 ghz 10 ghz 18 ghz 26.5 ghz 33 ghz bit error (db) attenuation state (db) -1.5 -1 -0.5 0 0.5 1 1.5 0 5 10 15 20 25 30 35 40 bit error (db) frequency (ghz) 15.5 db 8 db HMC941LP4 / HMC941LP4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz
attenu a tors - digit a l - chip 1 1 - 3 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com 20 30 40 50 60 0.01 0.1 1 10 100 ip3 (dbm) frequency (ghz) HMC941LP4 / HMC941LP4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz relative phase vs. frequency (only major states are shown) step attenuation vs. attenuation state 0.1 - 18 ghz input ip3 vs. temperature (minimum attenuation state) input ip3 over major attenuation states input power for 0.1 db compression -10 0 10 20 30 40 50 60 0 5 10 15 20 25 30 35 40 relative phase (deg) frequency (ghz) 15.5 db -0.2 0 0.2 0.4 0.6 0.8 1 1.2 0 4 8 12 16 5 ghz 10 ghz 18 ghz step attenuation (db) attenuation state (db) -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0 4 8 12 16 26.5 ghz 33 ghz step attenuation (db) attenuation state (db) 20 30 40 50 60 0.01 0.1 1 10 100 +25 c +85 c -40 c ip3 (dbm) frequency (ghz) 6 10 14 18 22 26 30 0.01 0.1 1 10 100 +25 c +85 c -40 c p0.1db (dbm) frequency (ghz) step attenuation vs. attenuation state 18 - 33 ghz
attenu a tors - digit a l - chip 1 1 - 4 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com control voltage bias voltages & currents absolute maximum ratings s tate bias condition l ow 0 to 0.8v @ 1 a h igh 2 to 5v @ 1 a vdd +5v @ 4.5 ma vss -5v @ 5 ma r f i nput p ower (0.1 to 33.0 gh z) +27 dbm control voltage ( p 0 to p 4) vdd + 0.5v vdd +7 vdc vss -7 vdc channel t emperature 150 c continuous p diss ( t = 85 o c) (derate 6.8 mw/ o c above 85 o c) 0.445 w t hermal r esistance 146 c/w s torage t emperature -65 to + 150 c o perating t emperature -40 to +85 c es d s ensitivity ( h bm) class 1a ele c trost a ti c sensiti v e d e v i c e o b ser v e han d ling pre ca utions HMC941LP4 / HMC941LP4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz outline drawing notes : 1. le adf r am e ma teri a l : c opper a llo y 2. d i m ensions a re in in c hes [m illi m eters ] 3. le ad sp ac ing toler a n c e is non -c u m ul a ti v e . 4. p ad b urr length sh a ll b e 0.15mm max i m u m. p ad b urr height sh a ll b e 0.05mm max i m u m. 5. p acka ge wa rp sh a ll not e xc ee d 0.05mm. 6. a ll groun d le ad s a n d groun d p add le m ust b e sol d ere d to p cb r f groun d. 7. re f er to hittite a ppli ca tion note f or suggeste d l a n d p a ttern . p art n umber p ackage body material l ead finish m sl r ating p ackage marking [3] h mc941 lp 4 l ow s tress i njection molded p lastic s n/ p b s older m sl 1 [1] h 941 xxxx h mc941 lp 4 e r o hs -compliant l ow s tress i njection molded p lastic 100% matte s n m sl 1 [2] h 941 xxxx [1] max peak refow temperature of 235 c [2] max peak refow temperature of 260 c [3] 4-digit lot number xxxx package information
attenu a tors - digit a l - chip 1 1 - 5 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC941LP4 / HMC941LP4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz p ad n umber function description i nterface s chematic 1 vss n egative bias -5v 2-4, 6-13, 15-17, 19 n /c t he pins are not connected internally; however, all data shown herein was measured with these pins connected to r f/dc ground externally. 5, 14 r f1, r f2 t hese pins are dc coupled and matched to 50 o hm. blocking capacitors are required if r f line potential is not equal to 0v. 18 vdd p ositive bias +5v 20 - 24 p 0 - p 4 s ee truth table and control voltage table. gn d p ackage bottom must be connected to r f/dc ground. pin descriptions truth table control voltage i nput attenuation s tate r f1 - r f2 p 4 8 db p 3 4 db p 2 2 db p 1 1 db p 0 0.5 db h igh h igh h igh h igh h igh r eference i . l . h igh h igh h igh h igh l ow 0.5 db h igh h igh h igh l ow h igh 1 db h igh h igh l ow h igh h igh 2 db h igh l ow h igh h igh h igh 4 db l ow h igh h igh h igh h igh 8 db l ow l ow l ow l ow l ow 15.5 db any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected.
attenu a tors - digit a l - chip 1 1 - 6 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC941LP4 / HMC941LP4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz application circuit
attenu a tors - digit a l - chip 1 1 - 7 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC941LP4 / HMC941LP4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz evaluation pcb list of materials for evaluation pcb 130450 [1] i tem description j1, j2, j4, j5 2.9 mm p c mount r f connector j3 dc connector c1, c2 1000 pf capacitor, 0402 p kg. u 1 h mc941 lp 4 digital attenuator p cb [2] 131909 e valuation board [1] r eference this number when ordering complete evaluation p cb [2] circuit board material: r ogers 4350 t he circuit board used in the application should use r f circuit design techniques. s ignal lines should have 50 o hm impedance while the package ground leads should be connected directly to the ground plane similar to that shown. a sufficient number of via holes should be used to connect the top and bottom ground planes. t he evaluation circuit board shown is available from h ittite upon request.
attenu a tors - digit a l - chip 1 1 - 8 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com HMC941LP4 / HMC941LP4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz notes:
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