for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com attenuators - digital - smt 5 5 - 110 hmc424lp3 / 424lp3e 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 13 ghz v08.0809 functional diagram electrical speci cations, t a = +25 c, with vee = -5v & vctl= 0/-5v the hmc424lp3 / HMC424LP3E is ideal for: ? basestation infrastructure ? fiber optics & broadband telecom ? microwave & vsat radios ? military & space ? test instrumentation 0.5 db lsb steps to 31.5 db single control line per bit 0.5 db typical bit error 9mm 2 leadless smt plastic package the hmc424lp3 & HMC424LP3E are broadband 6-bit gaas ic digital attenuators in low cost leadless surface mount packages. covering dc to 13 ghz, the insertion loss is less then 4 db typical. the attenuator bit values are 0.5 (lsb), 1, 2, 4, 8, and 16 db for a total attenuation of 31.5 db. attenuation accuracy is excellent at 0.5 db typical step error with an iip3 of +32 dbm. six control voltage inputs, toggled between 0 and -5v, are used to select each attenuation state. a single vee bias of -5v allows operation at frequ- encies down to dc. parameter frequency (ghz) min. typ. max. units insertion loss dc - 4 ghz 4.0 - 8.0 ghz 8.0 - 13.0 ghz 3.1 3.5 4.0 3.8 4.0 4.6 db db db attenuation range dc - 13.0 ghz 31.5 db return loss (rf1 & rf2, all atten. states) dc - 13.0 ghz 9 12 db attenuation accuracy: (referenced to insertion loss) 0.5 - 15.5 db states 16 - 31.5 db states dc - 13.0 ghz dc - 13.0 ghz 0.3 + 3% of atten. setting max 0.3 + 5% of atten. setting max db db input power for 0.1 db compression 1.0 - 13.0 ghz 22 dbm input third order intercept point (two-tone input power= 0 dbm each tone) ref state all other states 1.0 - 13.0 ghz 46 32 dbm dbm switching characteristics trise, tfall (10/90% rf) ton/toff (50% ctl to 10/90% rf) dc - 13.0 ghz 30 50 ns ns typical applications features general description
for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com attenuators - digital - smt 5 5 - 111 return loss rf1, rf2 (only major states are shown) insertion loss normalized attenuation (only major states are shown) bit error vs. frequency (only major states are shown) relative phase vs. frequency (only major states are shown) bit error vs. attenuation state -10 -8 -6 -4 -2 0 03691215 +25 c +85 c -40 c insertion loss (db) frequency (ghz) -2 -1 0 1 2 0 4 8 12 16 20 24 28 32 0.1 ghz 4 ghz 8 ghz 13 ghz bit error (db) attenuation state (db) -35 -30 -25 -20 -15 -10 -5 0 03691215 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db normalized attenuation (db) frequency (ghz) -20 0 20 40 60 80 100 03691215 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db relative phase (deg) frequency (ghz) -2 -1 0 1 2 03691215 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db bit error (db) frequency (ghz) -25 -20 -15 -10 -5 0 03691215 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db return loss (db) frequency (ghz) HMC424LP3E v08.0809 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 13 ghz
for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com attenuators - digital - smt 5 5 - 112 truth table control voltage bias voltage & current worst case step error between successive attenuation states control voltage input attenuation state rf1 - rf2 v1 16 db v2 8 db v3 4 db v4 2 db v5 1 db v6 0.5 db low low low low low low reference i.l. low low low low low high 0.5 db low low low low high low 1 db low low low high low low 2 db low low high low low low 4 db low high low low low low 8 db high low low low low low 16 db high high high high high high 31.5 db any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. state bias condition low 0 to -3v @ 35 a typ. high vee to vee +0.8v @ 5 a typ. vee range= -5 vdc 10% vee (vdc) iee (typ.) (ma) iee (max.) (ma) -5 2 5 -2 -1 0 1 2 03691215 step error (db) frequency (ghz) HMC424LP3E v08.0809 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 13 ghz
for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com attenuators - digital - smt 5 5 - 113 outline drawing absolute maximum ratings control voltage (v1 to v6) vee - 0.5 vdc bias voltage (vee) -7 vdc channel temperature 150 c thermal resistance 330 c/w storage temperature -65 to + 150 c operating temperature -55 to +85 c rf input power (0.5 - 13 ghz) +25 dbm electrostatic sensitive device observe handling precautions part number package body material lead finish msl rating package marking [3] hmc424lp3 low stress injection molded plastic sn/pb solder msl1 [1] 424 xxxx HMC424LP3E rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] 424 xxxx [1] max peak re ow temperature of 235 c [2] max peak re ow temperature of 260 c [3] 4-digit lot number xxxx package information notes: 1. leadframe material: copper alloy 2. dimensions are in inches [millimeters] 3. lead spacing tolerance is non-cumulative 4. pad burr length shall be 0.15mm maximum. pad burr height shall be 0.05mm maximum. 5. package warp shall not exceed 0.05mm. 6. all ground leads and ground paddle must be soldered to pcb rf ground. 7. refer to hittite application note for suggested land pattern. HMC424LP3E v08.0809 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 13 ghz
for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com attenuators - digital - smt 5 5 - 114 pad number function description interface schematic 1, 3, 10, 12 gnd package bottom has an exposed metal paddle that must also be connected to rf ground 2, 11 rfin, rfout this pin is dc coupled and matched to 50 ohm. blocking capaci- tors are required if rf line potential is not equal to 0v. 4, 5, 6, 7, 8, 9 v6 - v1 see truth table and control voltage table. 13, 14, 16 n/c this pin should be connected to pcb rf ground to maximize performance 15 vee supply voltage -5v 10% pin description suggested driver circuit (one circuit required per bit control input) simple driver using inexpensive standard logic ics provides fast switching using minimum dc current. * recommended value to suppress unwanted rf signals at v1 - v6 control lines. HMC424LP3E v08.0809 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 13 ghz
for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com attenuators - digital - smt 5 5 - 115 evaluation pcb the circuit board used in the nal application should use rf circuit design techniques. signal lines should have 50 ohm impedance while the package ground leads and exposed paddle should be con- nected 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. the evaluation circuit board shown is available from hittite upon request. * r1 - r6 = 100 ohm. these resistors are optional and may be used to enhance decoupling of the rf path from the control inputs. item description j1 - j2 pcb mount sma connector j3 8 pin dc connector c1 0.01 f capacitor, 0603 pkg. r1 - r6 100 ohm resistor, 0603 pkg. u1 hmc424lp3 / HMC424LP3E digital attenuator pcb [2] 105245 evaluation pcb [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 list of materials for evaluation pcb 105406 [1] HMC424LP3E v08.0809 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 13 ghz
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