7-bit 0.25 dB Glitch-Free™ Wideband Digital Step Attenuator

The F1956 is part of a family of Glitch-FreeTM DSAs which offers very high reliability due to its monolithic silicon die construction in a compact 5mm x 5mm 32-pin package TQFN package.  It has very low insertion loss is with minimal distortion and is designed with a 50 input and output impedance.  Additionally the device is designed to have high accurate which improves SNR and/or ACLR by ensuring the system gain is achieved as close to targeted as possible.

Features

  • Serial & 7-bit Parallel Interface 
  • 31.75 dB Range
  • 0.25 dB steps
  • Glitch-FreeTM: < 2 dB transient ringing
  • 500 ns settling time
  • Ultra linear +64 dBm IP3
  • Low Insertion Loss < 1.3 dB @ 4 GHz
  • Attenuation error < 0.6 dB @ 4 GHz
  • 3.3 V or 5 V Supply
  • 1.8 V or 3.3 V control logic
  • -40 °C to +105 °C operating temperature
  • 5mm x 5mm, 32-pin TQFN package

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
F1956NBGI Active NBG32P2 VFQFPN 32 I Yes Tray Availability
F1956NBGI8 Active NBG32P2 VFQFPN 32 I Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
F1956 Datasheet REV02 Datasheet PDF 7.09 MB Apr 7, 2016
Application Notes & White Papers
AN-896 RF Products EVS Digital Control Software Guide Application Note PDF 2.91 MB Aug 30, 2015
PCNs & PDNs
PCN# : A1402-04 Add Alternate Assembly & Test Product Change Notice PDF 45 KB May 20, 2014
Other
RF Digital Step Attenuators Product Overview 日本語, 简体中文 Overview PDF 412 KB Nov 29, 2016

Software & Tools

Title Other Languages Type Format File Size Date
RF Digital Control Software Installer Software Tool ZIP 169.81 MB Aug 30, 2015

Evaluation Boards

Part Number Title Sort ascending
F1956EVBI Evaluation Board for F1956 7-bit Digital Step Attenuator