F1958 Datasheet (IDT) - 7-Bit 0.25dB Digital Step Attenuator

F1958, 7-Bit 0.25dB Digital Step Attenuator

The F1958 is part of IDT’s Glitch-FreeTM family of DSAs optimized for the demanding requirements of Base Station (BTS) radio cards and numerous other applications.

This device is offered in a compact 4mm x 4mm 24-pin package with 50Ω input and output impedance for ease of integration into the radio

F1958 Features

* Serial and 7-bit parallel interface

* 31.75dB range

* 0.25dB steps

* Glitch-FreeTM: low transient overshoot

* 500ns settling time for 0.25dB steps

* Ultra linear > 63dBm IIP3

* Low insertion loss < 1.7dB at 4GHz

* Attenuation error < ±0.2dB at 4GHz

* Bi-directio