This document describes the specification for the F1956 Digital Step Attenuator. The F1956 is part of IDT’s Glitch-Free TM family of DSAs optimized for the demanding requirements of Base Station (BTS) radio cards and numerous other non-BTS applications. This device is offered in compact 5 mm x 5 mm 32-pin input and output impedance forpackage with 50 ease of integration into the radio or RF system.
Serial & 7-bit Parallel Interface · 31.75 dB Range · 0.25 dB steps
Glitch-Free TM : low transient overshoot
500 ns settling time
Ultra linear > 64 dBm IIP3 Low Insertion Loss < 1.7 dB @ 4 GHz Attenuation error < ±0.2 dB @ 4 GHz · Bi-directional RF use