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MAX98357B Datasheet PCM Input Class D Audio Power Amplifiers

Manufacturer: Maxim Integrated (now Analog Devices)

Download the MAX98357B datasheet PDF. This datasheet also includes the MAX98357A variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MAX98357A-MaximIntegrated.pdf) that lists specifications for multiple related part numbers.

General Description

The MAX98357A/MAX98357B is an easy-to-use, low-cost, digital pulse-code modulation (PCM) input Class D amplifier that provides industry-leading Class AB audio performance with Class D efficiency.

The digital audio interface automatically recognizes up to 35 different PCM and TDM clocking schemes which eliminates the need for I2C programming.

Operation is further simplified by eliminating the need for an external MCLK signal that is typically used for PCM communication.

Overview

EVALUATION KIT AVAILABLE Click here for production status of specific part numbers.

Key Features

  • Single-Supply Operation (2.5V to 5.5V).
  • 3.2W Output Power into 4Ω at 5V.
  • 2.4mA Quiescent Current.
  • 92% Efficiency (RL = 8Ω, POUT = 1W).
  • 22.8μVRMS Output Noise (AV = 15dB).
  • Low 0.013% THD+N at 1kHz.
  • No MCLK Required.
  • Sample Rates of 8kHz to 96kHz.
  • Supports Left, Right, or (Left/2 + Right/2) Output.
  • Sophisticated Edge Rate Control Enables Filterless Class D Outputs.
  • 77dB PSRR at 1kHz.