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I²C Programmable Gain Amplifier for Audio Applications

Fully Differential, Programmable-Gain Amplifier for Audio Applications

Product Details

Key Features

Parametric specs for Digital Potentiometers
Steps 20
Control Interface 2-Wire Addressable
Taper Log
Wiper Memory Volatile
ICC @5V (µA) (max) 3000
Package/Pins TDFN/14
Budgetary
Price (See Notes)
1.98
Parametric specs for Programmable Gain Amplifiers
Interface Type I2C
AV (V/V) 0.0178 to 17.78
Gain Error (%) (max) 10
VSUPPLY (V) (min) 4.5
VSUPPLY (V) (max) 5.5
Shutdown Mode Supply Current (µA) (max) 140
Supply Current (µA) (typ) 1700
Supply Current (µA) (max) 3000
Package/Pins TDFN/14
View Less

Simplified Block Diagram

Technical Docs

Support & Training

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Sampling:
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Parameters

Parametric specs for Digital Potentiometers
Steps 20
Control Interface 2-Wire Addressable
Taper Log
Wiper Memory Volatile
ICC @5V (µA) (max) 3000
Package/Pins TDFN/14
Budgetary
Price (See Notes)
1.98
Parametric specs for Programmable Gain Amplifiers
Interface Type I2C
AV (V/V) 0.0178 to 17.78
Gain Error (%) (max) 10
VSUPPLY (V) (min) 4.5
VSUPPLY (V) (max) 5.5
Shutdown Mode Supply Current (µA) (max) 140
Supply Current (µA) (typ) 1700
Supply Current (µA) (max) 3000
Package/Pins TDFN/14

Key Features

  • 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

Applications/Uses

  • Audio Volume Control
  • Microphone Gain Control
  • Telephone Headsets

Description

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.

Simplified Block Diagram

DS4420: Typical Operating Circuit DS4420: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.