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 - 98 hmc424g16 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 3 ghz v04.0709 electrical speci cations, t a = +25 c, with vee = -5v & vctl = 0/-5v the hmc424g16 is ideal for: ? telecom infrastructure ? military radios, radar & ecm ? space applications ? test instrumentation 0.5 db lsb steps to 31.5 db single control line per bit 0.5 to 0.8 db typical bit error 16 lead hermetic smt package the hmc424g16 is a broadband 6-bit gaas ic digital attenuator in a 16 lead glass/metal (hermetic) surface mount package. covering dc to 3 ghz, the insertion loss is less than 3 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 bet- ween 0 and -5v, are used to select each attenuation state at less than 70 a each. a single vee bias of -5v allows operation at frequencies down to dc. parameter frequency (ghz) min. typ. max. units insertion loss dc - 3 ghz 3.0 3.6 db attenuation range dc - 3 ghz 31.5 db return loss (rf1 & rf2, all atten. states) dc - 3 ghz 12 db attenuation accuracy: (referenced to insertion loss) all states all states dc - 2.0 ghz 2.0 - 3.0 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 - 3.0 ghz 22 dbm input third order intercept point (two-tone input power= 0 dbm each tone) ref state all other states 1.0 - 3.0 ghz 46 32 dbm dbm switching characteristics trise, tfall (10/90% rf) ton/toff (50% ctl to 10/90% rf) dc - 3 ghz 30 50 ns ns functional diagram 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 - 99 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 hmc424g16 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 3 ghz v04.0709 -6 -5 -4 -3 -2 -1 0 0 0.5 1 1.5 2 2.5 3 3.5 4 +25c +85c -40c insertion loss (db) frequency (ghz) -20 0 20 40 60 80 100 0 0.5 1 1.5 2 2.5 3 3.5 4 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db relatvie phase (deg) frequency (ghz) -2 -1 0 1 2 0 4 8 12 16 20 24 28 32 0.14 ghz 1 ghz 2 ghz 3 ghz bit error (db) attenuation state (db) -3 -2 -1 0 1 2 3 0 0.5 1 1.5 2 2.5 3 3.5 4 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db bit error (db) frequency (ghz) -35 -30 -25 -20 -15 -10 -5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db normalized attenuation (db) frequency (ghz) -25 -20 -15 -10 -5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 0.5 db 1 db 2 db 4 db 8 db 16 db 31.5 db return loss (db) frequency (ghz) -2 -1 0 1 2 0 4 8 12 16 20 24 28 32 0.14 ghz 1 ghz 2 ghz 3 ghz bit error (db) attenuation state (db)
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 - 100 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 -5 to -4.2v @ 5 a typ. vee range= -5 vdc 10% vee (vdc) iee (typ.) (ma) iee (max.) (ma) -5 2 5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0 0.5 1 1.5 2 2.5 3 3.5 4 step error (db) frequency (ghz) hmc424g16 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 3 ghz v04.0709
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 - 101 outline drawing notes: 1. package material: alumina loaded borosilicate glass. 2. leads, base, cover mateiral: kovartm (#7052 corning). 3. plating: electrolytic gold 50 microinches min., over electrolytic nickel 75 microinches min. 4. all dimensions are in inches [millimeters]. 5. tolerances: 0.005 [.013] unless otherwise specified. 6. characters to be helvetica medium .030 high, black ink, located approx. as shown. 7. all ground leads and ground paddle must be soldered to pcb rf ground. 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 - 13.0 ghz) +25 dbm electrostatic sensitive device observe handling precautions hmc424g16 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 3 ghz v04.0709
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 - 102 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. pin number function description interface schematic 1, 12-16 v1 - v6 see truth table and control voltage table. 2, 4-6, 8, 9, 11 gnd package bottom must also be connected to rf/dc ground. 3, 10 rf1, rf2 these pins are dc coupled and matched to 50 ohm. blocking capacitors are required if rf line is not equal to 0v. 7 vee supply voltage -5v 10% pin descriptions hmc424g16 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 3 ghz v04.0709
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 - 103 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 package bottom 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. the evaluation circuit board shown is available from hittite upon request. list of materials for evaluation pcb 106566 [1] item description j1 - j2 pcb mount sma connector j3 8 pin dc connector c1 0.01 f capacitor, 0603 pkg. c2, c3 100 pf capacitor, 0402 pkg. r1 - r6 100 ohm resistor, 0603 pkg. u1 hmc424g16 digital attenuator pcb [2] 106461 evaluation pcb [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 hmc424g16 0.5db lsb gaas mmic 6-bit digital attenuator, dc - 3 ghz v04.0709
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