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F1912 Block Diagram
F1912 Pinout


6-bit 0.5 dB Glitch-Free™ Wideband Digital Step Attenuator

The F1912 is part of a family of Glitch-FreeTM DSAs which offers very high reliability due to its monolithic silicon die construction in a compact 4mm x 4mm 20-pin package QFN package.  The silicon design has very low insertion loss and low distortion (> +60 dBm IP3I.)  The device has pinpoint accuracy and settles to final attenuation value within 400 nsec.  Most importantly, the F1912 includes IDT’s Glitch-FreeTM technology which results in low overshoot & ringing during MSB transitions


  • Serial & 6bit Parallel Interface
  • 31.5dB Control Range
  • 0.5dB step
  • Glitch-FreeTM, low transient overshoot
  • Attenuation Error < 0.22 dB @ 2 GHz
  • Low Insertion Loss < 1.4 dB @ 2 GHz
  • Ultra linear >+63 dBm IP3I
  • 500 ns switching speed
  • Stable Integral Non-Linearity over temperature
  • 3.0 V to 5.25 V supply
  • 1.8 V or 3.3 V control logic
  • -55°C to +105°C operating temperature 
  • 4mm x 4mm Thin QFN 20-pin package
  • Low Current Consumption  550µA typ

Product Specification

Frequency Range (MHz)Supply Voltage (V)Pkg. TypeLead Count (#)Input IP3 (dBm)Gain (dB)Gain Resolution (dB)Function
1.00 - 4000.003.00 - 5.25VFQFPN2063-1.400.506-bit DSA

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
F1912NCGIActiveNCG20VFQFPN20IYesTrayCheck Availability
F1912NCGI8ActiveNCG20VFQFPN20IYesReelCheck Availability


Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
F1912 Datasheet REV 01 Datasheet PDF 2.08 MB Jun 25, 2015
Apps Notes & White Papers
AN-896 RF Products EVS Digital Control Software Guide Application Note PDF 2.91 MB Aug 31, 2015
PCN# : TB1604-01 Alternate Test Location for F1912NCGI, F1912NCGI8 Product Change Notice PDF 37 KB Apr 21, 2016
PCN# : A1402-04 Add Alternate Assembly & Test Product Change Notice PDF 45 KB May 21, 2014
RF Digital Step Attenuators Product Overview 简体中文, 日本語 Overview PDF 819 KB Mar 2, 2016
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
RF Digital Control Software Installer Software Tool ZIP 169.81 MB Aug 31, 2015

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