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F1958 Datasheet 7-Bit 0.25dB Digital Step Attenuator

Manufacturer: IDT

Overview: 7-Bit 0.25dB Digital Step Attenuator 1MHz to 6GHz F1958 Datasheet.

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Datasheet Details

Part number F1958
Manufacturer IDT
File Size 5.10 MB
Description 7-Bit 0.25dB Digital Step Attenuator
Download F1958 Download (PDF)

General Description

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 or RF system.

The F1958 offers very high reliability due to its construction from a monolithic silicon die in a QFN package.

Key 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-directional RF use.
  • 3.3V or 5V supply.
  • -40°C to +105°C operating temperature.
  • 4mm x 4mm Thin QFN 24-pin package Block Diagram Figure 1. Block Diagram RF1 Glitch-FreeTM RF2 Bias Decoder SPI.

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