hrf-at4520 31.0 db, dc ? 4 ghz, 5 bit parallel digital attenuator the honeywell hrf-at4520 is a 5-bit digital attenuator ideal for use in broadband communication system app lications that require accuracy, speed and low power consumption. the hrf-at4520 is manufactured with honeywell's patented silicon on insulator (soi) cmos manufacturing technology, which provi des the performance of gaas with the economy and integration capabilit ies of conventional cmos. these attenuators are dc coupled to im prove lower operating frequency, frequency response and reduce the number of dc bias points required. features ? very low dc power consumption ? attenuation in steps from 1 db to 31 db ? single positive power supply voltage ? parallel data interface ? 50 ohm impedance ? dc-coupled, bi-directional rf path ? space saving vqfn surface mount packaging ? lead-free, rohs compliant and green rf electrical specifications @ + 25 o c results @ v dd = 5.0 +/- 10%, v ss = 0 unless otherwise stated, z 0 = 50 ohms contact honeywell for relative performance at other supply configurations parameter test condition frequency minimum typical maximum units insertion loss 1.0 ghz 2.5 ghz 3.0 ghz 4.0 ghz 2.5 3.0 3.6 5.5 2.9 3.5 3.9 5.8 db 1db compression v ss = 0v, input power v ss =-3v, input power 2.0 ghz 2.0 ghz 24 29 dbm dbm input ip3 v ss = 0v two-tone inputs, up to +5 dbm @ 0 dbm attenuation 2.5 ghz 38 dbm input ip3 v ss = -3v two-tone inputs, up to +5 dbm @ 0 dbm attenuation 2.5 ghz >38 dbm return loss any combination of bits -11 -13 db attenuation accuracy all attenuation states 1.0 ghz 2.5 ghz 3.0 ghz 4.0 ghz +/-(0.3 + 3.0% of programmed il) +/-(0.3 + 4.0% of programmed il) +/-(0.3 + 5.5% of programmed il) +/-(0.3 + 7.0% of programmed il) db trise, tfall ton, toff (tpd) 10% to 90% 50% cntl to 90% / 10%rf 10 15 ns ns hr f - at4520 in vqfn packa g e
hrf-at4520 2 www.honeywell.com/microwave functional schematic dc electrical specifications @ + 25c parameter minimum typical maximum units v dd 3.3 1 5.0 5.5 v v ss -5.0 v i dd <5.0 50 ua cmos logic level (0) 0 0.8 v cmos logic level (1) v dd ? 0.8 v dd v input leakage current 10 ua note 1, the performance curves are for v dd = +5.0 +/- 10% absolute maximum ratings 1 parameter absolute maximum units input power + 35 dbm v dd +6.0 v v ss -5.5 v esd voltage 2 400 v operating temperature -40 to +85 o c storage temperature -65 to +125 o c moisture sensitivity level level 3 @ 260 o c digital inputs v dd +0.6 max to -0.6 min v note 1 - operation of this device beyond any of these parameters may cause permanent damage. note 2 - although the hrf-at4520 contains esd protection circuitr y on all digital inputs, precautions should be taken to ensure that the absolute maximum ratings are not exceeded. latch-up: unlike conventional cmos digital attenuators, honeywell's hrf-at4520 is immune to latch-up. rf in rf out s4 s3 s0 s1 s2 16db 8db 4db 2db 1db esd, buffer, level shift
hrf- at4520 www.honeywell.com/microwave 3 pin configurations pin function pin function 1 vdd 13 ground 2 ground 14 ground 3 ground 15 rf output 4 rf input 16 ground 5 ground 17 vss 6 ground 18 ground 7 ground 19 s0 8 ground 20 s1 9 ground 21 s2 10 ground 22 s3 11 ground 23 s4 12 ground 24 open note : bottom ground plate must be grounded for proper rf performance. truth table s4 s3 s2 s1 s0 output 0 0 0 0 0 1 1 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0 0 1 reference input 1 db 2 db 4 db 8 db 16 db 31 db operation: data on parallel input ?s? pi ns are independently buffered and presented to the rf attenuator circuits. "0" = cmos low, "1" = cmos high.
hrf-at4520 4 www.honeywell.com/microwave performance curves insertion loss t y pical at4520 reference insertion loss -5.0 -4.5 -4.0 -3.5 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 frequency (ghz) insertion loss (db) - 40 c + 25 c + 85 c 3.3 v return loss typical at4520 input return loss -40.0 -35.0 -30.0 -25.0 -20.0 -15.0 -10.0 -5.0 0.0 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 frequency (ghz) input return loss (db) attn 1db attn 2 db attn 3db attn 5db attn 9db attn 17db attn 31db
hrf- at4520 www.honeywell.com/microwave 5 step accuracy typical at4520 step accuracy -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 frequency (ghz) step accuracy (db) 1.0 db 2.0 db 4.0 db 8.0 db 16.0 db 31.0 db 16 db 8 db 31 db 4 db 2 db relative accuracy typical at4520 relative accuracy -2.0 -1.5 -1.0 -0.5 0.0 0.5 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 frequency (ghz) relative accuracy (db) 1.0 db 2.0 db 4.0 db 8.0 db 16.0 db 31.0 db 31 db 16 db 8 db 4 db
hrf-at4520 6 www.honeywell.com/microwave package outline drawing green material set the ?gr attenuators have a green material set that c an withstand a maximum soldering temperature of 260 o c. lead finish the package leads are nickel palladium gold (nipdau). t he configuration being manufac tured and delivered today is lead-free rohs compliant. compliant packages have half-et ch leadframes and have date codes of 0300 or greater. lead free qfn surface mount application please see application note an310 for assembly process re commendations. the maximum soldering temperature of the -gr is 260 o c (-au attenuators are 250 o c). application notes can be found at our website: www.honeywell.com/microwave circuit application information these attenuators require a dc reference to ground. they may not operate properly when ac coupled on both the rf input and output without a dc ground reference provided as part of the circuit. see application note an311. notes 1. pin 1 identifier can be a combination or a dot and/or chamfer. 2. dim e n s i o n s a r e in millim ete r s .
hrf- at4520 www.honeywell.com/microwave 7 evaluation circuit board honeywell's evaluation board provides an easy to use method of evaluating the rf performance of our attenuator. simply connect power, dc and rf signals to be measuring attenuator performance in less than 10 minutes. evaluation circuit board layout design details item description pcb impedance matched multi-layer fr4 attenuator hrf-at4520 digital attenuator chip capacitor panasonic model ecu-e1c103kbq capacitor, .01uf 0402 10% 16v rf connector johnson connectors model 142-0701-801 sma rf coaxial connector dc pin mil-max model 800-10-064-10-001 header pins ordering information ordering number delivery method units per shipment HRF-AT4520-GR-TR hrf-at4520-gr-t hrf-at4520-e tape & reel tape evaluation board 2500 units per reel <2500 one board per box the new ?gr attenuators will replace and are fully back-compatible with the ?au attenuators. find out more for more information on honeywell?s micr owave products visit us online at www.honeywell.com/microwave or contact us at 800-323-8295 (763-954-2474 internationally). honeywell reserves the right to make changes to improve reliabi lity, function or design. honeywell does not assume any liabilit y arising out of the application or use of any product or circ uit described herein; neither does it conv ey any license under its patent rights nor t he rights of others. honeywell 12001 highway 55 plymouth, mn 55441 tel: 800-323-8295 www.honeywell.com/microwave form #4520w september 2007 ?2007 hone y well international inc. hrf-at4520 evaluation board hrf-at4520 evaluation board top view hrf-at4520 honeywell rf in rf out vdd vss gnd s0 s1 s2 s3 s4 open gnd
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