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F1956 Pinout
F1956 Block Diagram

F1956

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 Specification

Frequency Range (MHz)Supply Voltage (V)Pkg. TypeLead Count (#)Input IP3 (dBm)Gain (dB)Gain Resolution (dB)Function
1.00 - 6000.003.00 - 5.25VFQFPN3264-1.300.257-bit DSA

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
F1956NBGIActiveNBG32P2VFQFPN32IYesTrayCheck Availability
F1956NBGI8ActiveNBG32P2VFQFPN32IYesReelCheck Availability

Documents

Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
no-lock
F1956 Datasheet REV02 Datasheet PDF 7.09 MB Apr 8, 2016
Apps Notes & White Papers
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AN-896 RF Products EVS Digital Control Software Guide Application Note PDF 2.91 MB Aug 31, 2015
PCNs & PDNs
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PCN# : A1402-04 Add Alternate Assembly & Test Product Change Notice PDF 45 KB May 21, 2014
Other
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RF Digital Step Attenuators Product Overview 简体中文, 日本語 Overview PDF 819 KB Mar 2, 2016
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IDT Products for Radio Applications 日本語 Product Brief PDF 4.65 MB Aug 12, 2015

Software & Tools

Title Type Format File Size Datesort icon
no-lock
RF Digital Control Software Installer Software Tool ZIP 169.81 MB Aug 31, 2015

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