digital attenuator, 15.5 db, 5-bit, ttl driver dc - 2.0 ghz at65-0283 north america: tel. (800) 366-2266, fax (800) 618-8883 asia/pacific: tel.+81-44-844-8296, fax +81-44-844-8298 europe: tel. +44 (1344) 869 595, fax+44 (1344) 300 020 specifications subject to change without notice. visit www.macom.com for additional data sheets and product information. v 3.0 features ? attenuation: 0.5 db steps to 15.5 db ? low dc power consumption ? plastic soic, wide body, smt package ? integral ttl driver ? 50 ohm impedance ? test boards are available ? 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. ordering information part number package at65-0283 at65-0283tr at65-0283-tb bulk packaging tape and reel 1 units mounted on test board 1. check with the factory for available quantities and reel size. 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 2 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 -5.25 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 electrical specifications t a = +25c sow-16 package outline conforms to jedec standard ms-013aa.
north america: tel. (800) 366-2266, fax (800) 618-8883 asia/pacific: tel.+81-44-844-8296, fax +81-44-844-8298 europe: tel. +44 (1344) 869 595, fax+44 (1344) 300 020 specifications subject to change without notice. visit www.macom.com for additional data sheets and product information. v 3.0 absolute maximum ratings 3 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 -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. 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 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 pin configuration digital attenuator, 15.5db, 5-bit, ttl driver dc - 2.0 ghz at65-0283 typical performance insertion loss 1.00 1.50 2.00 2.50 0 500 1000 1500 2000 frequency (mhz) attenuation accuracy -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0 500 1000 1500 2000 frequency (mhz) 4 db bit 0.5, 1, 2 db bits attenuation accuracy -0.2 0.0 0.2 0.4 0.6 0.8 1.0 0 500 1000 1500 2000 frequency (mhz) max attenuation 8 db bit
north america: tel. (800) 366-2266, fax (800) 618-8883 asia/pacific: tel.+81-44-844-8296, fax +81-44-844-8298 europe: tel. +44 (1344) 869 595, fax+44 (1344) 300 020 specifications subject to change without notice. visit www.macom.com for additional data sheets and product information. v 3.0 digital attenuator, 15.5db, 5-bit, ttl driver dc - 2.0 ghz at65-0283 typical performance vswr @ insertion loss 1 1.2 1.4 1.6 0 500 1000 1500 2000 frequency (mhz) rfin rfout vswr rfout 0.5, 1, 2, & 4 db bits 1 1.1 1.2 1.3 1.4 1.5 0 500 1000 1500 2000 frequency (mhz) vswr rfin 0.5, 1, 2, 4, 8 db bits & max. attenuation 1 1.1 1.2 1.3 1.4 1.5 0 500 1000 1500 2000 frequency (mhz) vswr rfout 8 db bit & max. attenuation 1 1.1 1.2 1.3 1.4 1.5 0 500 1000 1500 2000 frequency (mhz)
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