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 - 104 hmc424lh5 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 13 ghz v02.0909 functional diagram electrical speci cations, t a = +25 c, with vee = -5v & vctl= 0/-5v the hmc424lh5 is ideal for: ? telecom infrastructure ? military radio, radar & ecm ? space systems ? test instrumentation 0.5 db lsb steps to 31.5 db single control line per bit 0.3 db typical bit error hermetic smt package, 25mm 2 screening to mil-prf-38535 (class b or s) available the hmc424lh5 is a broadband 6-bit gaas mmic digital attenuator housed in a hermetic smt leadless package. covering dc to 13 ghz, the insertion loss is less than 3.5 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 frequencies down to dc. the hmc424lh5 is compatible with standard and lead free surface mount manufacturing techniques and is suitable for high reliability military, industrial and space applications. parameter frequency (ghz) min. typ. max. units insertion loss dc - 4 ghz 4.0 - 8.0 ghz 8.0 - 13.0 ghz 2.7 3.3 4.2 3.2 3.8 4.7 db db db attenuation range dc - 13.0 ghz 31.5 db return loss (rf1 & rf2, all atten. states) dc - 13.0 ghz 12 db attenuation accuracy: (referenced to insertion loss) 0.5 - 16.5 db states 17 - 31.5 db states dc - 13.0 ghz dc - 13.0 ghz 0.4 + 4% of atten. setting max 0.5 + 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 - 105 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 normalized attenuation (db) frequency (ghz) -20 0 20 40 60 03691215 relative phase (deg) frequency (ghz) 31.5 db 16 db 8 db 0.5 - 4 db -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 return loss (db) frequency (ghz) 0.5 db i.l 1 db 2 db 4 db 8 db 16 db 31.5 db hmc424lh5 v02.0909 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 - 106 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) -5.0 3 5 -2 -1 0 1 2 03691215 step error (db) frequency (ghz) hmc424lh5 v02.0909 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 - 107 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 344 c/w continuous pdiss (t= 85 c) (derate 2.9 mw/ c above 85 c) 0.18 w storage temperature -65 to + 150 c operating temperature -40 to +85 c rf input power (0.5 - 13 ghz) +25 dbm electrostatic sensitive device observe handling precautions notes: 1. package body material: ceramic & kovar 2. lead and ground paddle plating: gold 40 - 80 microinches. 3. dimensions are in inches [millimeters]. 4. lead spacing tolerance is non-cumulative 5. pad burr length 0.15mm max. pad burr height 0.25mm max. 6. all ground leads and ground paddle must be soldered to pcb rf ground. hmc424lh5 v02.0909 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 - 108 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. pad number function description interface schematic 1, 9 rf1, rf2 this pin is dc coupled and matched to 50 ohm. blocking capaci- tors are required if rf line potential is not equal to 0v. 2 - 7 v6 - v1 see truth table and control voltage table. 8, 10, 12 gnd package base must also be connected to rf ground 11 ve e supply voltage -5v 10% hmc424lh5 v02.0909 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 - 109 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. item description j1 - j2 pcb mount sma sri connector j3 8 pin dc connector .1 thruhole c1 0.01 f capacitor, 0603 pkg. u1 hmc424lh5 digital attenuator pcb [2] 110853 evaluation pcb [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 list of materials for evaluation pcb 110855 [1] hmc424lh5 v02.0909 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 13 ghz
|
