digital attenuator, 30 db, 4 - bit, ttl driver, dc - 3.0 ghz at65 - 0233 so - 16 v 5.00 electrical specifications : t a = 25 c features n attenuation: 2.0 db steps to 30 db n low dc power consumption n integral ttl driver n 50 ohm impedance n temperature stability : 0.18 db from - 55c to +85c typ. description m/a - com?s at65 - 0233 is a gaas fet 4 - bit digital attenuator with a 2.0 db minimu m step size and a 30 db total attenuation range. this device is in a soic - 16 plastic surface mount package. the at65 - 0233 is ide ally suited for use where accuracy, fast speed, very low power consumption and low costs are required. typical applications incl ude dynamic range setting in precision receiver circuits and other gain/leveling control circuits. parameter test conditions frequency units min. typ. max. insertion loss ? dc - 0.5 ghz dc - 2.0 ghz dc - 3.0 ghz db db db ? ? ? 1.7 2.3 2.6 2.0 2.7 3.1 attenuation accuracy any bit or combination of bits dc - 3.0 ghz db (.4 + 8% of attenuation) vswr full range dc - 3.0 ghz ratio ? ? 1. 7 :1 trise, tfall ton, toff transients ns ns mv ? ? ? 10 30 35 50 150 ? 1 db compression input power input power 0.05 ghz 0.5 - 3.0 ghz dbm dbm ? ? +20 +28 ? ? input ip 3 two - tone inputs up to +5 dbm 0.05 ghz 0.5 - 3.0 ghz dbm dbm ? ? +40 +50 ? ? input ip 2 two - tone inputs up to +5 dbm 0.05 ghz 0.5 - 3.0 ghz dbm dbm ? ? +45 +68 ? ? 10% to 90% 50% cntl to 90%/10% rf in - band v cc - v ee ? ? ? ? v v 4.5 - 8.0 5.0 - 5.0 5.5 - 4.75 vctl vctl logic (0) ttl logic (1) ttl ? ? v v 0.0 2.0 ? ? 0.8 5.0 input leakage current (low) input leakage current (high) 0 to 0.8 v 2.0 to 5.0 v ? ? a a ? ? ? ? 20 20 icc v cc = 4.5 to 5.5 v ? ma ? ? 4.0 - iee v ee = - 5.0 to ? 8.0 v ? ma ? ? - 1
digital attenuator, 30 db, 4 - bit, ttl driver, dc - 3.0 ghz at65 - 0233 specifications subject to change without notice. n north america: tel. (800) 366 - 2266 n asia/pacific: tel.+ 81 - 44 - 844 - 8296 , fax + 81 - 44 - 844 - 8298 n europe: tel. +44 (1344) 869 595, fax+44 (1344) 300 020 visit www.macom.com for additional data sheets and product information. v 5.00 2 pin configuration pin # function pin # function 1 gnd 9 c2 2 rf1 10 c1 3 gnd 11 gnd 4 n/c 12 gnd 5 vee 13 n/c 6 vcc 14 gnd 7 c4 15 rf2 8 c3 16 gnd n/c = no connection absolute maximum ratings 1 parameter absolute maximum max. input power 0.05 ghz 0.5 - 3.0 ghz +27 dbm +34 dbm +vcc +5.5v - vee - 8.5v control voltage 2 - 0.5 to vcc + 0.5v operating temperature - 40c to +85c storage temperature - 65c to +125c 1. operation of this device above any one of these parameters may cause permanent damage. 2. standard cmos ttl interface, latch - up wil l occur if logic signal is applied prior to power supply. truth table c1 c2 c3 c4 attenuation 0 0 0 0 loss, reference 1 0 0 0 2.0 db 0 1 0 0 4.0 db 0 0 1 0 8.0 db 0 0 0 1 16.0 db 1 1 1 1 30.0 db 0 = ttl low; 1 = ttl high typical performance curves attenuation accuracy, 4 db attenuation accuracy, 2 db typical insertion loss (db) 0 1 2 3 0 0.5 1 1.5 2 2.5 3 frequency (ghz) loss (db) -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0 0.5 1 1.5 2 2.5 3 frequency (ghz) deviation from nom. atten. (db) -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0 0.5 1 1.5 2 2.5 3 frequency (ghz) deviation from nom. atten. (db)
digital attenuator, 30 db, 4 - bit, ttl driver, dc - 3.0 ghz at65 - 0233 specifications subject to change without notice. n north america: tel. (800) 366 - 2266 n asia/pacific: tel.+ 81 - 44 - 844 - 8296 , fax + 81 - 44 - 844 - 8298 n europe: tel. +44 (1344) 869 595, fax+44 (1344) 300 020 visit www.macom.com for additional data sheets and product information. v 5.00 typical performance curves attenuation accuracy, 16 db attenuation accuracy, 8 db attenuation accuracy, 30 db 3 typical rf1 vswr typical rf2 vswr ordering information part number package at65 - 0233 soic - 16 lead plastic at65 - 0233tr tape and ree l (1k reel) at65 - 0233 - tb unit mounted on a test board 1 1.1 1.2 1.3 1.4 0 0.5 1 1.5 2 2.5 3 frequency (ghz) vswr 2 & 4 db insertion loss 8 db 16 & 30 db 1 1.1 1.2 1.3 1.4 0 0.5 1 1.5 2 2.5 3 frequency (ghz) vswr insertion loss 16 db 30 db 2, 4, & 8 db -2.4 -2 -1.6 -1.2 -0.8 -0.4 0 0.4 0.8 0 0.5 1 1.5 2 2.5 3 frequency (ghz) deviation from nom. atten. (db) -0.4 -0.2 0 0.2 0.4 0 0.5 1 1.5 2 2.5 3 frequency (ghz) deviation from nom. atten. (db) -0.8 -0.4 0 0.4 0.8 0 0.5 1 1.5 2 2.5 3 frequency (ghz) deviation from nom. atten. (db)
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