DS4420 I²C Programmable Gain Amplifier for Audio Applications Fully Differential, Programmable-Gain Amplifier for Audio Applications

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Status Active: In Production. 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.

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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

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Rev 0; 2006-10-17
This page last modified: 2007-02-06