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F1956 - 7-Bit 0.25 dB Wideband Digital Step Attenuator

Description

This document describes the specification for the F1956 Digital Step Attenuator.

The F1956 is part of IDT’s Glitch-FreeTM family of DSAs optimized for the demanding requirements of Base Station (BTS) radio cards and numerous other non-BTS applications.

Features

  • Serial & 7-bit Parallel Interface.
  • 31.75 dB Range.
  • 0.25 dB steps.
  • Glitch-FreeTM: 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.
  • 3.3 V or 5 V Supply.
  • 1.8 V or 3.3 V control logic.
  • Low Current Consumption: 350 μA typical.
  • -40 °C to +105 °C operating temperature.
  • 5 mm x 5 mm Thin QFN 32 pin package.

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Datasheet Details

Part number F1956
Manufacturer IDT
File Size 6.77 MB
Description 7-Bit 0.25 dB Wideband Digital Step Attenuator
Datasheet download datasheet F1956 Datasheet

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Full PDF Text Transcription

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F1956 Datasheet 7-Bit 0.25 dB Wideband Digital Step Attenuator 1 to 6000 MHz GENERAL DESCRIPTION This document describes the specification for the F1956 Digital Step Attenuator. The F1956 is part of IDT’s Glitch-FreeTM 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 package with 50  input and output impedance for ease of integration into the radio or RF system. COMPETITIVE ADVANTAGE The F1956 offers very high reliability due to its construction from a monolithic silicon die in a QFN package. The insertion loss is very low with minimal distortion. Additionally the device is designed to have extremely accurate attenuations levels.
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