Single-/Dual-Supply, Stereo 16W, Class D Amplifier with Differential Inputs

The MAX9742 stereo Class D audio power amplifier delivers up to 2 x 16W into 4Ω loads. The MAX9742 features high-power efficiency (92% with 8Ω loads), eliminating the need for a bulky heatsink and conserving power. The MAX9742 operates from a 20V to 40V single supply or a ±10V to ±20V dual supply. Features include fully differential inputs, comprehensive click-and-pop suppression, low-power shutdown mode, and an externally adjustable gain. Short-circuit and thermal-overload protection prevent the device from being damaged during a fault condition.

The MAX9742 is available in a thermally efficient 36-pin TQFN (6mm x 6mm x 0.8mm) package and is specified over the -40°C to +85°C extended temperature range.

Applications

* Audio Docking Stations * CRT TVs * Flat-Panel Display TVs * Multimedia Monitors

* 2 x 16W Output Power (RL = 4Ω, THD+N = 10%)

* High Efficiency: Up to 92% with RL = 8Ω

* Mute and Shutdown Modes

* Differential Inputs Suppress Common-Mode Noise

* Adjustable Gain

* Integrated Click-and-Pop Suppression

* Low 0.06% THD+N at 3.5W, RL = 8Ω

* Output Short-Circuit and Thermal Protection

* Available in Space-Saving, 6mm x 6mm, 36-Pin TQFN Package