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 - 36 hmc290 / 290e 2 db lsb gaas mmic 2-bit digital attenuator, 0.7 - 4.0 ghz v01.0605 general description features functional diagram 2 db lsb steps to 6 db single positive control per bit 0.2 db typical bit error miniature sot 26 package: 9 mm 2 electrical speci cations, t a = +25 c, vdd = +3v to +5v & vctl = 0/vdd (unless otherwise stated) typical applications the hmc290 & HMC290E are broadband 2 - bit positive control gaas ic digital attenuators in 6 lead sot26 surface mount plastic packages. covering 0.7 to 4 ghz, the insertion loss is typically less than 0.7 db. the attenuator bit values are 2 (lsb) and 4 db for a total attenuation of 6 db. accuracy is excellent at 0.2 db typical with an iip3 of up to +52 dbm. two bit control voltage inputs, toggled between 0 and +3 to +5 volts, are used to select each attenuation state at less than 50 ua each. a single vdd bias of +3 to +5 volts applied through an external 5k ohm resistor is required. occupying less than 9 mm2, this is the small- est 2 - bit digital attenuator available. the hmc290 / HMC290E is ideal for: ? cellular ? pcs, ism, mmds ? wll handset & basestation parameter frequency min. typical max. units insertion loss 0.7 - 1.4 ghz 1.4 - 2.3 ghz 2.3 - 2.7 ghz 2.7 - 4.0 ghz 0.5 0.5 0.6 0.8 0.7 0.8 0.9 1.2 db db db db attenuation range 0.7 - 4.0 ghz 6 db return loss (rf1 & rf2, all atten. states) 0.7 - 2.7 ghz 2.7 - 4.0 ghz 16 15 20 18 db db attenuation accuracy: (referenced to insertion loss) 2, 4 db states 6 db states 0.7 - 4.0 ghz 0.7 - 4.0 ghz 0.2 + 2% of atten. setting max 0.3 + 2% of atten. setting max db db input power for 0.1 db compression 5v 3v 0.7 - 4.0 ghz 27 24 dbm dbm input third order intercept point (two-tone input power = 0 dbm each tone) 5v 3v 0.7 - 4.0 ghz 52 50 dbm dbm switching characteristics trise, tfall (10/90% rf) ton, toff (50% ctl to 10/90% rf) 0.7 - 4.0 ghz 400 420 ns ns
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 - 37 absolute bit error vs. attenuation state return loss rf1, rf2 insertion loss normalized attenuation note: all data typical over voltage (+3v to +5v) & temperature (-40 to +85 deg. c.). absolute bit error vs. frequency relative phase vs. frequency hmc290 / 290e 2 db lsb gaas mmic 2-bit digital attenuator, 0.7 - 4.0 ghz v01.0605 -1.5 -1.25 -1 -0.75 -0.5 -0.25 0 0.5 1 1.5 2 2.5 3 3.5 4 +25 c -40 c +85 c insertion loss (db) frequency (ghz) 0 0.25 0.5 0.75 1 246 0.9 ghz 2.4 ghz 1.9 ghz 3.5 ghz bit error (db) attenuation state (db) -8 -7 -6 -5 -4 -3 -2 -1 0 0.5 1 1.5 2 2.5 3 3.5 4 2 db 4 db 6 db normalized attenuation (db) frequency (ghz) -10 -5 0 5 10 15 20 0.5 1 1.5 2 2.5 3 3.5 4 2 db 4 db 6 db relative phase (deg.) frequency (ghz) 0 0.25 0.5 0.75 1 0.5 1 1.5 2 2.5 3 3.5 4 2 db 4 db 6 db bit error (db) frequency (ghz) -30 -25 -20 -15 -10 -5 0 0.5 1 1.5 2 2.5 3 3.5 4 2 db 4 db 6 db return loss (db) frequency (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 - 38 control & bias voltages truth table absolute maximum ratings outline drawing control voltage input attenuation setting rf1 - rf2 v2 4 db v1 2 db high high reference i.l. high low 2 db low high 4 db low low 6 db max. atten. 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 + 0.2v @ 20 ua max high vdd 0.2v @ 50 ua max note: vdd = +3v to 5v 0.2v control voltage (v1, v2) vdd + 0.5 vdc bias voltage (vdd) + 8.0 vdc storage temperature -65 to +150 c operating temperature -40 to +85 c rf input power (0.7 - 4 ghz) +28 dbm notes: 1. leadframe material: copper alloy 2. dimensions are in inches [millimeters] 3. dimension does not include moldflash of 0.15mm per side. 4. dimension does not include moldflash of 0.25mm per side. 5. all ground leads must be soldered to pcb rf ground electrostatic sensitive device observe handling precautions hmc290 / 290e 2 db lsb gaas mmic 2-bit digital attenuator, 0.7 - 4.0 ghz v01.0605 part number package body material lead finish msl rating package marking [3] hmc290 low stress injection molded plastic sn/pb solder msl1 [1] h290 xxxx HMC290E rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] 290e 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
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 - 39 application circuit dc blocking capacitors c1 & c2 are required on rf1 & rf2. choose c1 = c2 = 100 ~ 300 pf to allow lowest customer speci c frequency to pass with minimal loss. r1 = 5k ohm is required to supply voltage to the circuit through either pin 3 or pin 1. hmc290 / 290e 2 db lsb gaas mmic 2-bit digital attenuator, 0.7 - 4.0 ghz v01.0605 the circuit board used in the nal application should use rf circuit design techniques. signal lines should have 50 ohm impedance while the pack- age 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. the evaluation cir- cuit board as shown is available from hittite micro- wave corporation upon request. list of materials for evaluation pcb 103372 [1] item description j1 - j2 pcb mount sma connector j3 - j6 dc pin r1 5k ohm resistor, 0402 chip r2, r3 100 ohm resistor, 0402 chip c1, c2 0402 chip capacitor, select for lowest frequency of operation u1 hmc290 / HMC290E digital attenuator pcb [2] 103370 evaluation pcb 1.5 x 1.5 [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 evaluation circuit board * r2 = r3 = 100 ohm. these resistors are optional and may be used to enhance decoupling of the rf path from the control inputs.
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