v 2.00 o r dering inf o r m a t i o n * if specific reel size is required, consult factory for part number assignment. digital attenuator , 15.5 db, 5-bit dc - 2 ghz at -280 p arameter t est conditions 2 unit min. t yp. max reference dc ?0.1 ghz db 1.1 1.3 insertion dc ?0.5 ghz db 1.3 1.5 loss dc ?1.0 ghz db 1.5 1.8 dc ?2.0 ghz db 1.8 2.0 attenuation accuracy 2 dc ?1.0 ghz ?(0.20 db + 3% of atten. setting in db) db dc ?2.0 ghz ?(0.30 db + 3% of atten. setting in db) db vswr (any state) 1.5:1 1.8:1 tr ise , tfall 10% to 90% rf, 90% to 10% rf ns 12 t on, t off 50% control to 90% rf, 50% control to 10% rf ns 18 tr ansients in band mv 30 one db input p ow er 0.05 ghz dbm 22 compression input p ow er 0.5 ?2.0 ghz dbm 27 ip 2 measured relativ e 0.05 ghz dbm 53 to input p ow er 0.5 ?2.0 ghz dbm 68 (for two-tone input po w er up to +5 dbm) ip 3 measured relativ e 0.05 ghz dbm 40 to input p ow er 0.5 ?2.0 ghz dbm 45 (for two-tone input po w er up to +5 dbm) s o - 1 6 1. all measurements at 1 ghz in a 50 w system, unless otherwise specified. 2. attenuation accuracy specifications apply with negative bias control and low inductance grounding. f e a t u r e s attenuation: 0.5-db steps to 15.5 db t e m p e r a t u r e stability: ?0.15 db from -40? to +85 c t y p i c a l ultra low dc power consumption low intermodulation products, ip 3 : 45 dbm tape and reel packaging a v a i l a b l e d e s c r i p t i o n m/a-com's AT-280 is a 5-bit, 0.5 db-step gaas mmic digital attenuator in a low cost soic 16-lead surface mount plastic package. the AT-280 is ideally suited for use where high accuracy, fast switching, very low power consumption and low intermodulation products are r e q u i r ed at a low cost. typical applications include radio and cellular equipment, wireless lans, gps equipment and other gain/level control cir c u i t s . the AT-280 is fabricated with a monolithic gaas mmic using a mature 1-micron process. the process features full chip passivation for increased per f o r mance and r e l i a b i l i t y . p art number p acka ge at -280 pin soic 16-lead at -280tr f orward t ape & reel* at -280rtr re v erse t ape & reel* l l l l l electrical specifications, t a = 25 c
v 2.00 digital attenuator , 15.5 db, 5-bit at -280 functional sc h e m a t i c p arameter absolute maximum 1 max. input p ow er 0.05 ghz +27 dbm 0.5 ?2.0 ghz +34 dbm control v oltage +5v, ?.5v operating t emperature ?0?c to +85? storage t emperature ?5?c to +150?c absolute maximum ratings 1 1.operation of this device abo v e any one of these parameters may cause permanent damage . truth t a bl e 0 = vinlow = 0 v = 0 to -0.2 v @ 20 a maximum typical p e r fo r m a n c e control inputs vc5 vc4 vc3 vc3 vc2 vc2 vc1 vc1 attenuation (db) 1 1 1 0 1 0 1 0 reference 0 1 1 0 1 0 1 0 0.5 db 1 0 1 0 1 0 1 0 1 db 1 1 0 1 1 0 1 0 2 db 1 1 1 0 0 1 1 0 4 db 1 1 1 0 1 0 0 1 8 db 0 0 0 1 0 1 0 1 15.5 db
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