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F1978 Datasheet Digital Step Attenuator

Manufacturer: IDT

Overview: 6-Bit, 75Ω Digital Step Attenuator 5MHz to 3GHz F1978 Datasheet.

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Datasheet Details

Part number F1978
Manufacturer IDT
File Size 3.68 MB
Description Digital Step Attenuator
Download F1978 Download (PDF)

General Description

The F1978 Digital Step Attenuator (DSA) is a product in IDT’s Glitch-FreeTM DSA Family, which is optimized for the demanding requirements of CATV and satellite systems.

It operates in the frequency range of 5MHz to 3000MHz.

This device is offered in a compact 4mm  4mm, 20-pin Thin QFN package with a 75Ω impedance for ease of integration.

Key Features

  • Frequency: 5MHz to 3000MHz.
  • Serial and 6-bit parallel interface.
  • 31.5dB control range.
  • 0.5dB step.
  • Glitch-FreeTM technology, low transient overshoot.
  • 3.0V to 5.25V supply.
  • 1.8V or 3.3V control logic.
  • Attenuator step error: 0.1dB at 1GHz.
  • Low insertion loss: 1.2dB at 1GHz.
  • Ultra-linear IIP3: +64dBm.
  • IIP2: +125dBm typical.
  • Stable integral non-linearity over temperature.
  • Low current consumption: 550µA typical.
  • Bi-directional.

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