digital attenuator, 15 db, 4 - bit, ttl driver, dc - 4.0 ghz at90 - 0413 csp - 1 v 3.00 features n attenuation: 1 db steps to 15 db n low dc power consumption n small footprint, jedec package n integral ttl driver n 50 ohm im pedance n test boards available n tape and reel packaging available description m/a - com?s at90 - 0413 is a gaas fet 4 - bit digital at tenuator with integral driver. step size is 1 db providing a 15 db attenuation range. this device is in an fqfp - n plastic surf ace mount package. the at90 - 0413 is suited for applications where accuracy, fast speed, low power consumption and low costs ar e required. electrical specifications : t a = 25 c parameter test conditions frequency units min. typ. max. insertion loss ? dc - 2.5 ghz dc - 4.0 ghz db db ? ? 2.0 2.5 2.5 3.0 attenuation accuracy individual bits or combination of bits dc - 2.5 ghz dc - 4.0 ghz db db ? ? ? ? (0.3+4% of atten setting) (0.3+6% of atten setting) vswr full attenuation range dc - 2.5 ghz dc - 4.0 ghz ratio ratio ? ? 1.5:1 1.8:1 1.8:1 2.0:1 switching speed 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 - 4.0 ghz db db ? ? +21 +29 ? ? input ip 3 two - tone inputs up to +5 dbm 50 mhz 0.5 - 4.0 ghz db db ? ? +35 +48 ? ? +vcc ? ? v 4.75 5.0 5.25 - vee ? ? v - 8.0 - 5.0 - 4.75 logic ?0? sink current is 20 a max. ? v 0.0 ? 0.8 logic ?1? sink current is 20 a max. ? v 2.0 ? 5.0 icc vcc min to max, logic ?0? or ?1? ? ma ? 0.2 6 - iee - vee min to max, logic ?0? or ?1? ? ma ? - 0.2 - 1
digital attenuator, 15 db, 4 - bit, ttl driver, dc - 4.0 ghz at90 - 0413 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 3.00 2 recommended pcb layout 2 pin configuration p in no. function pin no. function 1 gnd 17 n/c 2 c8 18 n/c 3 c4 19 n/c 4 c2 20 n/c 5 c1 21 n/c 6 gnd 22 n/c 7 gnd 23 n/c 8 n/c 24 n/c 9 n/c 25 n/c 10 n/c 1 26 gnd 11 gnd 27 rf2 12 rf1 28 gnd 13 gnd 29 n/c 1 14 n/c 30 - vee 15 n/c 31 n/c 16 n/c 32 +vcc 2. application note c2083 is available on line at www.macom.com 1. pins 10 & 29 must be isolated. absolute maximum ratings 3 parameter absolute maximum max. input power 0.05 ghz 0.5 - 4.0 ghz +27 dbm +34 dbm +vcc +5.5v - vee - 8.5v logic voltages 4 - 0.5 to + vcc + 0.5v operating temperature - 40c to +85c storage temperature - 65c to +125c 3. operation of this device above any one of these parameters may cause permanent damange. 4. standard cmos ttl interface, latch - up wi ll occur if logic signal is applied prior to power supply. truth table c8 c4 c2 c1 attenuation 0 0 0 0 loss, reference 0 0 0 1 1.0 db 0 0 1 0 2 .0 db 0 1 0 0 4 .0 db 1 0 0 0 8 .0 db 1 1 1 1 15 .0 db 0 = ttl low; 1 = ttl high typical performance curves vswr @ insertion loss insertion loss 1.00 1.20 1.40 1.60 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) vswr rf in rf out 1.00 1.50 2.00 2.50 3.00 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db)
digital attenuator, 15 db, 4 - bit, ttl driver, dc - 4.0 ghz at90 - 0413 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 3.00 typical performance curves attenuation error, 1 db bit 3 attenuation error, 2 db bit attenuation error, 4 db bit attenuation error, 8 db bit vswr, 1 db bit attenuation error, max. attenuation 1.00 1.20 1.40 1.60 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) vswr rf in rf out -0.30 -0.20 -0.10 0.00 0.10 0.20 0.30 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -0.30 -0.20 -0.10 0.00 0.10 0.20 0.30 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -0.20 0.00 0.20 0.40 0.60 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -0.60 -0.40 -0.20 0.00 0.20 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -0.40 -0.20 0.00 0.20 0.40 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db)
digital attenuator, 15 db, 4 - bit, ttl driver, dc - 4.0 ghz at90 - 0413 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 3.00 typical performance curves vswr, 2 db bit 4 vswr, 4 db bit vswr, 8 db bit vswr, max. attenuation 1.00 1.20 1.40 1.60 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) vswr rf in rf out 1.00 1.20 1.40 1.60 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) vswr rf in rf out 1.00 1.20 1.40 1.60 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) vswr rf in rf out 1.00 1.20 1.40 1.60 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) vswr rf in rf out insertion loss vs. temperature 1 db bit vs. temperature 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 1000 2000 3000 4000 frequency (mhz) insertion loss (db) +25c -40c +85c -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0 1000 2000 3000 4000 frequency (mhz) attenuation accuracy (db) -40c +25c +85c
digital attenuator, 15 db, 4 - bit, ttl driver, dc - 4.0 ghz at90 - 0413 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 3.00 typical performance curves 2 db bit vs. temperature 5 4 db bit vs. temperature 8 db bit vs. temperature max. attenuation vs. temperature ordering information part number package at90 - 0413 bulk packaging at90 - 0413tr tape and reel (1k reel) at90 - 0413 - tb units mounted on test board -0.1 0 0.1 0.2 0.3 0.4 0.5 0 1000 2000 3000 4000 frequency (mhz) attenuation accuracy (db) -40c +25c +85c 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 1000 2000 3000 4000 frequency (mhz) attenuation accuracy (db) -40c +25c +85c -0.35 -0.30 -0.25 -0.20 -0.15 -0.10 -0.05 0.00 0.05 0 1000 2000 3000 4000 frequency (mhz) attenuation accuracy (db) -40c +25c +85c -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0 1000 2000 3000 4000 frequency (mhz) attenuation accuracy (db) -40c +25c +85c
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