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 attenu a tors - a n al o g - s m t 8 8 - 1 hmc712lp3ce gaas mmic voltage-variable attenuator, 5 - 26.5 ghz v04.0410 general description features functional diagram wide bandwidth: 5 - 26.5 ghz e xcellent linearity: +28 dbm input p1db wide attenuation r ange: 28 db absorptive t opology s inge or dual control o peration 16 lead 3x3mm s m t package: 9mm2 electrical specifcations, t a = +25 c, 50 ohm system typical applications t he hmc712lp3c e is ideal for: ? point-to-point r adio ? v s a t r adio ? t est instrumentation ? microwave s ensors ? military, e cm & r adar t he hmc712lp3c e is an absorptive voltage var- iable attenuator (vva) which operates from 5 - 26.5 ghz and is ideal in designs where an analog dc control signal must be used to control r f signal levels over a 28 db amplitude range. it features two shunt-type attenuators which are controlled by two analog voltages, vctrl1 and vctrl2. o ptimum linearity performance of the attenuator is achieved by frst varying vctrl1 of the 1st attenuation stage from -3v to 0v with vctrl2 fxed at -3v. t he control voltage of the 2nd attenuation stage, vctrl2, should then be varied from -3v to 0v, with vctrl1 fxed at 0v. t he hmc712lp3c e is housed in a r oh s compliant 3x3 mm qf n leadless package however, if the vctrl1 and vctrl2 pins are connected together it is possible to achieve the full analog attenuation range with only a small degradation in input ip3 performance. applications include agc circuits and temperature compensation of multiple gain stages in microwave point-to-point and v s a t radios. parameter min. t yp. max. u nits insertion loss 5 - 16 ghz 16 - 24 ghz 24 - 26.5 ghz 3.5 4.5 5.5 db db db attenuation r ange 28 db input r eturn loss 12 db o utput r eturn loss 10 db input power for 1 db compression (any attenuation) 28 dbm input t hird o rder intercept ( t wo-tone input power = 10 dbm e ach t one) 32 dbm
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 attenu a tors - a n al o g - s m t 8 8 - 2 attenuation vs. vctrl2 over temperature @ 10 ghz, vctrl1 = 0v attenuation vs. frequency over vctrl vctrl1 = variable, vctrl2 = -3v attenuation vs. vctrl1 over temperature @ 10 ghz, vctrl2 = -3v attenuation vs. pin @ 10 ghz vctrl1 = variable, vctrl2 = -3v hmc712lp3ce v04.0410 gaas mmic voltage-variable attenuator, 5 - 26.5 ghz attenuation vs. frequency over vctrl vctrl1 = 0v, vctrl2 = variable -50 -40 -30 -20 -10 0 2 6 10 14 18 22 26 30 -3.0 v -1.8 v -1.4 v -0.8 v 0.0 v attenuation (db) frequency (ghz) -15 -10 -5 0 2 6 10 14 18 22 26 30 -3.0 v -1.6 v -1.2 v -0.6 v 0.0 v attenuation (db) frequency (ghz) -10 -8 -6 -4 -2 0 -3 -2.5 -2 -1.5 -1 -0.5 0 +25 c +85 c -40 c attenuation (db) vctrl1 (v) -35 -30 -25 -20 -15 -10 -5 0 -3 -2.5 -2 -1.5 -1 -0.5 0 +25 c +85 c -40 c attenuation (db) vctrl2 (v) -12 -10 -8 -6 -4 -2 0 0 5 10 15 20 -3.0 v -1.8 v -1.4 v -1.0 v -0.4 0.0 v attenuation (db) input power (dbm)
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 attenu a tors - a n al o g - s m t 8 8 - 3 output return loss vctrl1 = 0v, vctrl2 = variable output return loss vctrl1 = variable, vctrl2 = -3v hmc712lp3ce v04.0410 gaas mmic voltage-variable attenuator, 5 - 26.5 ghz input return loss vctrl1 = 0v, vctrl2 = variable -40 -30 -20 -10 0 2 6 10 14 18 22 26 30 -3.0 v -1.4 v 0.0 v return loss (db) frequency (ghz) -30 -20 -10 0 2 6 10 14 18 22 26 30 -3.0 v -1.2 v 0.0 v return loss (db) frequency (ghz) -30 -20 -10 0 2 6 10 14 18 22 26 30 -3.0 v -1.4 v 0.0 v return loss (db) frequency (ghz) insertion phase vs. vctrl2, vctrl1 = 0v insertion phase vs. vctrl1, vctrl2 = -3v -180 -135 -90 -45 0 45 90 135 180 -3 -2.5 -2 -1.5 -1 -0.5 0 1 ghz 5 ghz 10 ghz 20 ghz 25 ghz insertion phase (degrees) vctrl 2 -180 -135 -90 -45 0 45 90 135 180 -3 -2.5 -2 -1.5 -1 -0.5 0 1 ghz 5 ghz 10 ghz 20 ghz 25 ghz insertion phase (degrees) vcrtl 1 input return loss vctrl1 = variable, vctrl2 = -3v -40 -30 -20 -10 0 2 6 10 14 18 22 26 30 -3.0 v -1.2 v 0.0 v return loss (db) frequency (ghz)
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 attenu a tors - a n al o g - s m t 8 8 - 4 input ip3 vs input power @ 10 ghz vctrl1 = variable, vctrl2 = -3v input ip3 vs. input power over frequency vctrl1 = -2.0v, vctrl2 = -3v (worst case ip3) input ip3 vs. input power over temperature @ 10 ghz, vctrl1 = -2.0v, vctrl2 = -3v hmc712lp3ce v04.0410 gaas mmic voltage-variable attenuator, 5 - 26.5 ghz attenuation vs. input power over vctrl vctrl1 = vctrl2 attenuation vs. vctrl over temperature @ 10 ghz, vctrl1 = vctrl2 attenuation vs. frequency over vctrl vctrl1 = vctrl2 10 20 30 40 50 60 0 5 10 15 20 -3.0 v -2.0 v -1.6 v -1.0 v 0.0 v ip3 (dbm) single tone input power (dbm) 20 25 30 35 40 0 5 10 15 20 5 ghz 15 ghz 20 ghz 30 ghz ip3 (dbm) single tone input power (dbm) -40 -30 -20 -10 0 0 5 10 15 20 -3.0 v -1.8 v -1.4 v -1.0 v -0.4 v 0.0 v attenuation (db) input power (dbm) -50 -40 -30 -20 -10 0 2 9 16 23 30 -3.0 v -1.6 v -1.2 v -0.6 v 0.0 v attenuation (db) frequency (ghz) -40 -30 -20 -10 0 -3 -2.5 -2 -1.5 -1 -0.5 0 +25 c +85 c -40 c attenuation (db) control voltage (v) 20 25 30 35 40 0 5 10 15 20 +25 c +85 c -40 c ip3 (dbm) single tone input power (dbm)
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 attenu a tors - a n al o g - s m t 8 8 - 5 hmc712lp3ce v04.0410 gaas mmic voltage-variable attenuator, 5 - 26.5 ghz absolute maximum ratings r f input power +30 dbm control voltage r ange +1 to -5v channel t emperature 150 c continuous pdiss ( t = 85 c) 1w t hermal r esistance (channel to ground paddle) 66 c/w s torage t emperature -65 to +150 c o perating t emperature -40 to +85 c e l e c trost a t ic sens i t iv e d e vic e o b ser v e ha n dli n g p re ca ut i ons control voltages vctrl1 -3 to 0v @ 10 a vctrl2 -3 to 0v @ 10 a input return loss, vctrl1 = vctrl2 output return loss, vctrl1 = vctrl2 input ip3 vs. input power over vctrl @ 10 ghz, vctrl1 = vctrl2 -40 -30 -20 -10 0 2 6 10 14 18 22 26 30 -3.0 v -1.2 v 0.0 v return loss (db) frequency (ghz) -30 -20 -10 0 2 6 10 14 18 22 26 30 -3.0 v -1.2 v 0.0 v return loss (db) frequency (ghz) 0 10 20 30 40 50 60 0 5 10 15 20 -3.0 v -2.0 v -1.6 v -1.0 v 0.0 v ip3 (dbm) single tone input power (dbm)
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 attenu a tors - a n al o g - s m t 8 8 - 6 outline drawing hmc712lp3ce v04.0410 gaas mmic voltage-variable attenuator, 5 - 26.5 ghz notes : 1. packag e b o dy ma ter ial: l o w stress i n j ec t i on m o ld e d pla st ic s ilica a n d s ilic on imp re g n a te d. 2. l e ad a n d g roun d paddl e ma ter ial: c o pp er all o y. 3. l e ad a n d g roun d paddl e pla t i n g: 100% ma tte t i n . 4. dim ens i ons a re i n i n ch es [millim eters ]. 5. l e ad s paci n g to l er a n c e i s non -c u m u la t iv e . 6. pad b urr l en g t h s hall b e 0.15mm max. pad b urr h e igh t s hall b e 0.05mm max. 7. packag e wa r p s hall not e xc ee d 0.05mm 8. all g roun d l e ad s a n d g roun d paddl e m ust b e so ld ere d to pcb r f g roun d. 9. re f er to hi tt i te applica t i on note f or su gg este d pcb la n d pa ttern . part n umber package body material lead finish m s l r ating package marking [1] hmc712lp3c e r oh s -compliant low s tress injection molded plastic 100% matte s n m s l1 [2] h712 xxxx [1] 4-digit lot number xxxx [2] max peak refow temperature of 260 c package information
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 attenu a tors - a n al o g - s m t 8 8 - 7 hmc712lp3ce v04.0410 gaas mmic voltage-variable attenuator, 5 - 26.5 ghz application circuit pin n umber function description interface s chematic 1, 2, 4, 9, 11, 12 ground paddle g n d ground paddle must be connected to r f/dc ground. 3 r fi n t his pin is dc coupled and matched to 50 o hms. a blocking capacitor is required if r f line potential is not equal to 0v. 5, 8, 13 - 16 n /c t hese pins should be connected to pcb r f ground to maximize performance. 6 vctrl1 control voltage 1 7 vctrl2 control voltage 2 10 r f out t his pin is dc coupled and matched to 50 o hms. a blocking capacitor is required if r f line potential is not equal to 0v. pin descriptions
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 attenu a tors - a n al o g - s m t 8 8 - 8 hmc712lp3ce v04.0410 gaas mmic voltage-variable attenuator, 5 - 26.5 ghz evaluation pcb t he circuit board used in the fnal application should use r f circuit design techniques. s ignal lines should have 50 o hm impedance while the package ground leads and exposed paddle 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 hittite upon request. list of materials for evaluation pcb 123773 [1] item description j1, j2 pcb mount s ma r f connector c1, c2 100 pf capacitor, 0402 pkg. c3, c4 1000 pf capacitor, 0603 pkg. c5, c6 4.7 f capacitor, t antalum v1, v2 dc pin u 1 hmc712lp3c e voltage variable attenuator pcb [2] 123771 e valuation pcb [1] r eference this number when ordering complete evaluation pcb [2] circuit board material: arlon 25f r or r ogers 4350
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