digital attenuator, 15.5 db, 5 - bit, ttl driver, dc - 2.0 ghz at65 - 0283 sow - 16 v 6.00 electrical specifications : t a = 25 c features n attenuation: 0.5 db steps to 15.5 db n low dc power consumption n plastic soic, wide body, smt package n integral ttl drive r n 50 ohm impedance n test boards are available n tape and reel packaging available description m/a - com's at65 - 0283 is a gaas fet 5 - bit digital attenuator with integral ttl driver. step size is 0.5 db providing a 15.5 db total attenuation range. this device is in a soic - 16 plastic surface mount package. the at65 - 0283 is ideally suited for use where accuracy, fast speed, very low power consumption and low costs are required. package outline conforms to jedec standard ms - 013aa. parameter test conditions frequency units min typical max insertion loss ? dc - 1.0 ghz dc - 2.0 ghz db db ? ? 2.0 2. 3 2.5 2.7 attenuation accuracy any bit any combination of bits dc - 2.0 ghz dc - 2.0 ghz db db ? ? ? ? (. 3 + 4 % of atten) (.3 +6% of atten) vswr full range dc - 2.0 ghz ratio ? 1.5:1 1.8:1 switching speed 1 50% cntl to 90%/10% rf 10% to 90% or 90% to 10% ? ? ns ns ? ? 75 20 150 50 1 db compression ? ? 50 mhz 0.5 - 2.0 ghz dbm dbm ? ? +21 +29 ? ? input ip 3 two - tone inputs up to +5 dbm 50 mhz 0.5 - 2.0 ghz db db ? ? +35 +48 ? ? vcc - vee ? ? ? ? v v 4.75 - 8.0 5.0 - 5.0 5.25 - 4.75 logic ?0? sink current is 20 a max. ? v 0.0 ? 0 .8 logic ?1? source current is 20 a max. ? v 2.0 ? 5.0 icc vcc min to max, logic ?0? or ?1? ? ma ? 0 .2 6 - iee - iee min to max, logic ?0? or ?1? ? ma ? - 0 .2 - 1 1. decoupling capacitors (.01 f) are required on power supply lines.
digital attenuator, 15.5 db, 5 - bit, ttl driver, dc - 2.0 ghz at65 - 0283 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 6.00 2 pin configuration pin # function pin # function 1 rf 9 c8 2 gnd 10 vcc 3 gnd 11 vee 4 gnd 12 c4 5 gnd 13 c2 6 gnd 14 c1 7 gnd 15 c0.5 8 rf 16 gnd absolute maximum ratings 2 parameter absolute maximum max. input power 0.05 ghz 0.5 - 2.0 ghz +27 dbm +34 dbm +vcc +5.5v - vee - 8.5v logic voltages 3 - 0.5 to vcc + 0.5v operating temperature - 40c to +85c storage temperature - 65c to +125c 2. operation of this device above any one of these parameters may cause permanent damange. 3. standard cmos ttl interface, latch - up wi ll occur if logic signal is applied prior to power supply. truth table c8 c4 c2 c1 c0.5 attenuation 0 0 0 0 0 loss, reference 0 0 0 0 1 0.5 db 0 0 0 1 0 1.0 db 0 0 1 0 0 2.0 db 0 1 0 0 0 4.0 db 1 0 0 0 0 8.0 db 1 1 1 1 1 15.5 db 0 = ttl low; 1 = ttl high typical performance curves attenuation accuracy attenuation accuracy insertion loss 1.00 1.50 2.00 2.50 0 500 1000 1500 2000 frequency (mhz) insertion loss (db) -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0 500 1000 1500 2000 frequency (mhz) deviation (db) 4 db bit 0.5, 1, 2 db bits -0.2 0.0 0.2 0.4 0.6 0.8 1.0 0 500 1000 1500 2000 frequency (mhz) deviation (db) max. attenuation 8 db
digital attenuator, 15.5 db, 5 - bit, ttl driver, dc - 2.0 ghz at65 - 0283 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 6.00 typical performance curves vswr rfout, 0.5, 1, 2 & 4 db bits vswr @ insertion loss vswr rfin, 0.5, 1, 2, 4, 8 db bits and max attenuation 3 vswr rfout, 8 db bit & max attenuation ordering information part number package at65 - 0283 bulk packaging at65 - 0283tr tape and ree l (1k reel) at65 - 0283 - tb units mounted on test board 1 1.1 1.2 1.3 1.4 1.5 0 500 1000 1500 2000 frequency (mhz) vswr 1 1.1 1.2 1.3 1.4 1.5 0 500 1000 1500 2000 frequency (mhz) vswr 1 1.1 1.2 1.3 1.4 1.5 0 500 1000 1500 2000 frequency (mhz) vswr 1 1.2 1.4 1.6 0 500 1000 1500 2000 frequency (mhz) vswr rfin rfout
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