DS4420

PRODUCTION

I²C Programmable Gain Amplifier for Audio Applications

Fully Differential, Programmable-Gain Amplifier for Audio Applications

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • Differential Inputs and Outputs
  • -35dB to +25dB Adjustable Gain
  • Low Output Noise
  • Low Distortion Driving Into a 50Ω Load
  • 3dB Gain Steps Programmed Through I²C Interface
  • 5V Single Supply
  • 20kHz Bandwidth for All Gain Settings
  • Small 3mm x 3mm x 0.8mm TDFN Package
  • Up to Eight DS4420s can be Placed on the Same I²C Bus

The DS4420 is a fully differential, programmable gain amplifier for audio applications. It features a -35dB to +25dB gain range controlled by an I²C interface and it is optimized to drive loads as low as 50Ω. The gain is adjustable in 3dB increments across the entire range. Three address inputs, used to select the I²C slave address, enable up to eight devices on a single bus.

The product operates from a single 5V supply over a -20°C to +70°C temperature range. It is offered in a 3mm x 3mm TDFN package.

Applications

  • Audio Volume Control
  • Microphone Gain Control
  • Telephone Headsets
DS4420
I²C Programmable Gain Amplifier for Audio Applications
DS4420: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

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