digital attenuator, 31.5 db, 6 - bit, ttl driver, dc - 4.0 ghz at90 - 1107 csp - 1 v 7.00 electrical specifications t a = +25c parameter test conditions frequency units min typica max insertion loss ? dc - 4 .0 ghz db ? 4.5 5.1 attenuation accuracy individual bits 0.5 - 1 - 2 - 4 - 8 - 16 d b any combination of bits 1 to 31.5 db dc - 4 .0 ghz dc - 4 .0 ghz db db ? ? ? ? (. 3 + 7 % of atten setting ) (. 5 + 8 % of atten setting ) vswr full range dc - 4 .0 ghz ratio ? 2.0 :1 2 .2 :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 dbm dbm ? ? +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 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 ? 6 10 f eatures n attenuation: 0.5 db steps to 31.5 db n single positive supply n contains internal dc to dc converter n low dc power consumpt ion n small footprint, jedec package n integral ttl driver n 50 ohm impedance description m/a - com's at 90 - 1 107 is a gaas fet 6 - bit dig ital attenuator with integral ttl driver. step size is 0.5 db pr o- viding a 31.5 db total attenuation range. this device is in a n fqfp - n plastic surface mount package. the at 90 - 1 107 is ideally su ited for use where accuracy, fast speed, very low power consumption and low costs are required.
digital attenuator, 31.5 db, 6 - bit, ttl driver, dc - 4.0 ghz at90 - 1107 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 7.00 2 absolute maximum ratings 8 parameter absolute maximum max. input power 0.05 ghz 0.5 - 4 .0 ghz +27 dbm +34 dbm +vcc +5.5v logic voltages 9 - 0.5 to + vcc + 0.5v operating temperature - 40c to +85c storage temperature - 65c to +125c 8. operation of this device above any one of these parameters may cause permanent damange. 9. standard cmos ttl interface, latch - up wi ll occur if logic signal is applied prior to power supply. recommended pcb layout 7 truth table 0 = ttl low; 1 = ttl high pin configuration pin # function pin # function 1 c8 17 nc 2 c4 18 nc 3 c2 19 +vcc 2 4 c 1 20 nc 5 c 0.5 21 cp 4 6 c16 22 nc 7 gnd 23 cp 4 8 nc 24 nc 9 nc 2 5 - vee 3 10 nc 1 2 6 gnd 11 gnd 2 7 rf2 12 rf1 2 8 gnd 13 gnd 29 nc 1 14 nc 30 - vee 3,5 15 nc 31 nc 16 nc 32 +vcc 2,6 c16 c8 c4 c2 c1 c0.5 attenuation 0 0 0 0 0 0 loss, reference 0 0 0 0 0 1 0.5 db 0 0 0 0 1 0 1 .0 db 0 0 0 1 0 0 2 .0 db 0 0 1 0 0 0 4 .0 db 0 1 0 0 0 0 8 .0 db 1 0 0 0 0 0 16 . 0 db 1 1 1 1 1 1 31.5 db 1. pins 10 & 29 must be isolated 2. pin 19 must be connected to pin 32 3. pin 25 must be connected to pin 30 4. .01 f cap must be connected between pins 21 and 23 5. - vee is produced internally and requires a .1 f cap to gnd 6. +vcc requires a .1 f cap to gnd 7. application note c2083 is available on line at www.macom.com
digital attenuator, 31.5 db, 6 - bit, ttl driver, dc - 4.0 ghz at90 - 1107 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 7.00 typical performance curves 3 attenuation error, 1 db bit attenuation error, 0.5 db bit attenuation error, 2 db bit attenuation error, 4 db bit -0.4 -0.2 0.0 0.2 0.4 0 1000 2000 3000 4000 frequency (mhz) attenuation error (db) -0.4 -0.2 0.0 0.2 0.4 0 1000 2000 3000 4000 frequency (mhz) attenuation error (db) -0.4 -0.2 0.0 0.2 0.4 0 1000 2000 3000 4000 frequency (mhz) attenuation error (db) -0.4 -0.2 0.0 0.2 0.4 0 1000 2000 3000 4000 frequency (mhz) attenuation error (db) vswr @ insertion loss insertion loss 2.0 3.0 4.0 5.0 6.0 0 1000 2000 3000 4000 frequency (mhz) loss (db) 1.0 1.3 1.6 1.9 2.2 0 1000 2000 3000 4000 frequency (mhz) vswr input output
digital attenuator, 31.5 db, 6 - bit, ttl driver, dc - 4.0 ghz at90 - 1107 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 7.00 typical performance curves 4 attenuation error, 8 db bit attenuation error, 16 db bit -0.8 -0.4 0.0 0.4 0.8 0 1000 2000 3000 4000 frequency (mhz) attenuation error (db) -0.8 -0.4 0.0 0.4 0.8 0 1000 2000 3000 4000 frequency (mhz) attenuation error (db) attenuation error, max. attenuation vswr, 0.5 db bit vswr, 1 db bit vswr, 2 db bit -2.0 -1.0 0.0 1.0 0 1000 2000 3000 4000 frequency (mhz) attenuation error (db) 1.0 1.2 1.4 1.6 1.8 0 1000 2000 3000 4000 frequency (mhz) vswr input output 1.0 1.2 1.4 1.6 1.8 0 1000 2000 3000 4000 frequency (mhz) vswr input output 1.0 1.2 1.4 1.6 1.8 0 1000 2000 3000 4000 frequency (mhz) vswr input output
digital attenuator, 31.5 db, 6 - bit, ttl driver, dc - 4.0 ghz at90 - 1107 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 7.00 typical performance curves 5 vswr, 8 db bit vswr, 4 db bit vswr, 16 db bit vswr, max. attenuation 1.0 1.2 1.4 1.6 0 1000 2000 3000 4000 frequency (mhz) vswr input output 1.0 1.2 1.4 1.6 1.8 0 1000 2000 3000 4000 frequency (mhz) vswr input output 1.0 1.2 1.4 1.6 1.8 0 1000 2000 3000 4000 frequency (mhz) vswr input output 1.0 1.2 1.4 1.6 0 1000 2000 3000 4000 frequency (mhz) vswr input output typical attenuation deviation vs. temperature for 1 db bit typical attenuation deviation vs. temperature for 0.5 db bit -0.25 -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 0.15 0.20 0.25 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 0.40 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db)
digital attenuator, 31.5 db, 6 - bit, ttl driver, dc - 4.0 ghz at90 - 1107 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 7.00 typical performance curves 5 typical attenuation deviation vs. temperature for 2 db bit typical attenuation deviation vs. temperature for 4 db bit typical attenuation deviation vs. temperature for 8 db bit typical attenuation deviation vs. temperature for 16 db bit -0.25 -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) insertion loss vs. temperature typical attenuation deviation vs. temperature at maximum atten. -2.50 -2.00 -1.50 -1.00 -0.50 0.00 0.50 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) -0.25 -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) cold room hot -0.60 -0.50 -0.40 -0.30 -0.20 -0.10 0.00 0.10 0.20 0.30 0.40 0.50 0 500 1000 1500 2000 2500 3000 3500 4000 frequency (mhz) attenuation (db) cold room hot -0.80 -0.60 -0.40 -0.20 0.00 0.20 0.40 0.60 0 1000 2000 3000 4000 frequency (mhz) attenuation (db) cold room hot 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 1000 2000 3000 4000 frequency (mhz) insertion loss (db) cold room hot
digital attenuator, 31.5 db, 6 - bit, ttl driver, dc - 4.0 ghz at90 - 1107 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 7.00 5 ordering information part number package at 90 - 1107 bulk packaging at 90 - 1107 tr tape and ree l (1k reel) at 90 - 1107 - tb units mounted on test board
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