MAX9787

2.2W Stereo Audio Power Amplifier with Analog Volume Control

High PSRR, Low 0.01% Total Harmonic Distortion (THD)

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Overview

Class AB, 2.2W, Stereo BTL Speaker Amplifiers
Analog Volume Control
BEEP Input with Glitch Filter
5V Single-Supply Operation
High 90dB PSRR
Low-Power Shutdown Mode
Industry-Leading Click-and-Pop Suppression
Low 0.01% THD+N at 1kHz
Short-Circuit and Thermal Protection
Selectable-Gain Settings
Space-Saving 28-Pin TQFN (5mm x 5mm x 0.8mm)

The MAX9787 combines a stereo, 2.2W audio power amplifier with an analog volume control in a single device. A high 90dB PSRR and low 0.01% THD+N ensures clean, low-distortion amplification of the audio signal.

The analog volume control can be driven with a potentiometer, an RC-filtered PWM source, or a DAC output. A BEEP input allows the addition of alert signals from the controller to the audio path.

Industry-leading, click-and-pop suppression eliminates audible transients during power and shutdown cycles. Other features include single-supply voltage, a shutdown mode, logic-selectable gain, thermal-overload, and output short-circuit protection.

The MAX9787 is offered in a space-saving, thermally efficient, 28-pin thin QFN (5mm x 5mm x 0.8mm) package, and is specified over the extended -40°C to +85°C temperature range.

Applications