Mono 7W Class D Amplifier

The MAX9737 mono 7W Class D amplifier provides a high-performance, thermally efficient amplifier solution that offers up to 88% efficiency at a 12V supply. The device operates from 8V to 28V and provides a high 80dB PSRR, eliminating the need for a regulated power supply.

Filterless modulation allows the MAX9737 to pass CE EMI limits with 1m cables using only a low-cost ferrite bead and small-value capacitor on each output.

Comprehensive click-and-pop suppression circuitry reduces noise on power-up/down or into and out of shutdown or mute.

An input op amp allows the user to create a lowpass or highpass filter, and select an optimal gain. The internal precharge circuit ensures clickless/popless turn-on within 10ms.

The MAX9737 is available in the 24-pin, TQFN-EP package and is specified over the -40°C to +85°C temperature range.

Applications

* 2.1 Notebook PCs * LCD/PDP/CRT Monitors * MP3 Docking Stations * PC Surround Speakers

* 8V to 28V Supply Voltage Range

* Spread-Spectrum Modulation Enables Low-EMI Solution

* Passes EMI Limit with Up to 1m of Speaker Cable

* High 80dB PSRR

* Up to 88% Efficiency Eliminates Heatsink

* Thermal and Output Current Protection

* < 1µA Shutdown Mode

* Click-and-Pop Suppression

* < 10ms Turn-On Time

* Space-Saving, 4mm x 4mm x 0.8mm, 24-Pin TQFN Package