digital attenuator, 50 db, 6 - bit, ttl driver, dc - 2.4 ghz at90 - 1106 csp - 1 v 5.00 electrical specifications t a = +25c parameter test conditions frequency units min typical max insertion loss ? dc - 2.4 ghz db ? 5.5 6.0 attenuation accuracy individual bits 1 - 2 - 4 - 8 - 16 - 32 db any combination of bits 1 to 50 db dc - 2.4 ghz dc - 2.4 ghz db db ? ? ? ? (. 3 + 5 % of atten setting ) (. 5 + 8 % of atten setting ) vswr full range dc - 2.4 ghz ratio ? 1.8:1 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 - 2.4 0 ghz dbm dbm ? ? +21 +29 ? ? input ip 3 two - tone inputs up to +5 dbm 50 mhz 0.5 - 2. 4 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: 1 db steps to 50 db n single positive supply n contains internal dc to dc converter n low dc power consumption n small footprint, jedec package n integral ttl driver n 50 ohm impedance description m/a - com's at 90 - 1 106 is a gaas fet 6 - bit digital attenuator with integral ttl driver. step size is 1 db pr o- vi d ing a 50 db total attenuation range. this device is in a fqfp - n plastic surface mount package. the at 90 - 1 106 is ideally suited f or use where accuracy, fast speed, very low power consumption and low costs are required.
digital attenuator, 50 db, 6 - bit, ttl driver, dc - 2.4 ghz at90 - 1106 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 absolute maximum ratings 8 parameter absolute maximum max. input power 0.05 ghz 0.5 - 2.4 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 c32 c16 c8 c4 c2 c1 attenuation 0 0 0 0 0 0 loss, reference 0 0 0 0 0 1 1.0 db 0 0 0 0 1 0 2 .0 db 0 0 0 1 0 0 4 .0 db 0 0 1 0 0 0 8 .0 db 0 1 0 0 0 0 16 .0 db 1 0 0 0 0 0 32 . 0 db 1 1 0 0 1 0 50.0 db 0 = ttl low; 1 = ttl high pin configuration pin # function pin # function 1 c16 17 nc 2 c8 18 nc 3 c4 19 +vcc 2 4 c 2 20 nc 5 c 1 21 cp 4 6 c32 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 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, 50 db, 6 - bit, ttl driver, dc - 2.4 ghz at90 - 1106 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 3 attenuation error, 2 db bit attenuation error, 1 db bit attenuation error, 4 db bit attenuation error, 8 db bit -0.2 -0.1 0.0 0.1 0.2 0 400 800 1200 1600 2000 2400 frequency (mhz) attenuation error (db) -0.1 0.0 0.1 0.2 0 400 800 1200 1600 2000 2400 frequency (mhz) attenuation error (db) -0.1 0.0 0.1 0.2 0.3 0.4 0 400 800 1200 1600 2000 2400 frequency (mhz) attenuation error (db) -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0 400 800 1200 1600 2000 2400 frequency (mhz) attenuation error (db) insertion loss 3.0 4.0 5.0 6.0 0 400 800 1200 1600 2000 2400 frequency (mhz) loss (db) vswr @ insertion loss 1.0 1.3 1.6 1.9 2.2 0 400 800 1200 1600 2000 2400 frequency (mhz) vswr input output
digital attenuator, 50 db, 6 - bit, ttl driver, dc - 2.4 ghz at90 - 1106 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 4 attenuation error, 16 db bit attenuation error, 32 db bit -0.6 -0.2 0.2 0.6 1.0 0 400 800 1200 1600 2000 2400 frequency (mhz) attenuation error (db) -0.6 -0.2 0.2 0.6 1.0 0 400 800 1200 1600 2000 2400 frequency (mhz) attenuation error (db) attenuation error, max. attenuation vswr, 1 db bit vswr, 2 db bit -3.5 -1.5 0.5 2.5 0 400 800 1200 1600 2000 2400 frequency (mhz) attenuation error (db) 1.0 1.2 1.4 1.6 1.8 0 400 800 1200 1600 2000 2400 frequency (mhz) vswr input output 1.0 1.2 1.4 1.6 1.8 0 400 800 1200 1600 2000 2400 frequency (mhz) vswr input output vswr, 4 db bit 1.0 1.2 1.4 1.6 1.8 0 400 800 1200 1600 2000 2400 frequency (mhz) vswr input output
digital attenuator, 50 db, 6 - bit, ttl driver, dc - 2.4 ghz at90 - 1106 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 5 vswr, 8 db bit 1.0 1.2 1.4 1.6 1.8 0 400 800 1200 1600 2000 2400 frequency (mhz) vswr input output vswr, 32 db bit vswr, 16 db bit vswr, maximum attenuation maximum ip3 over temperature range and attenuation @ 50 mhz 20 30 40 50 loss 1 2 4 8 16 32 50 attenuation (db) ip3 1.0 1.2 1.4 1.6 0 400 800 1200 1600 2000 2400 frequency (mhz) vswr input output 1.00 1.20 1.40 1.60 0 400 800 1200 1600 2000 2400 frequency (mhz) vswr input output 1.0 1.2 1.4 1.6 0 400 800 1200 1600 2000 2400 frequency (mhz) vswr input output maximum ip3 over temperature range and attenuation @ 950 mhz 20 30 40 50 loss 1 2 4 8 16 32 50 attenuation (db) ip3
digital attenuator, 50 db, 6 - bit, ttl driver, dc - 2.4 ghz at90 - 1106 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 6 ordering information part number package at 90 - 1106 bulk packaging at 90 - 1106 tr tape and ree l (1k reel) at 90 - 1106 - tb units mounted on test board typical performance curves maximum ip3 over temperature range and attenuation @ 1900 mhz 20 30 40 50 loss 1 2 4 8 16 32 50 attenuation (db) ip3
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