6W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers

The MAX9713/MAX9714 mono/stereo Class D audio power amplifiers provide class AB amplifier performance with Class D efficiency, conserving board space and eliminating the need for a bulky heatsink. Using a Class D architecture, these devices deliver up to 6W while offering greater than 85% efficiency. Modulation and switching schemes render the traditional Class D output filter unnecessary.

The MAX9713/MAX9714 offer two modulation schemes: a fixed-frequency mode (FFM), and a spread-spectrum mode (SSM) that reduces EMI-radiated emissions due to the modulation frequency. The device utilizes a fully differential architecture, a full bridged output, and comprehensive click-and-pop suppression.

The MAX9713/MAX9714 feature high 76dB PSRR, low 0.07% THD+N, and SNR in excess of 95dB. Short-circuit and thermal-overload protection prevent the devices from being damaged during a fault condition. The MAX9713 is available in a 32-pin TQFN (5mm x 5mm x 0.8mm) package. The MAX9714 is available in a 32-pin TQFN (7mm x 7mm x 0.8mm) package. Both devices are specified over the extended -40°C to +85°C temperature range.

Applications

* Audio * Desktop PCs * Hands-Free Car Phone Adapters * High-End Notebook * LCD Monitors * LCD Projectors * LCD TVs

* Filterless Class D Amplifier

* Unique Spread-Spectrum Mode Offers 5dB Emissions Improvement Over Conventional Methods

* Up to 85% Efficient

* 6W Output Power into 8Ω

* Low 0.07% THD+N

* High PSRR (76dB at 1kHz)

* 10V to 25V Single-Supply Operation

* Differential Inputs Minimize Common-Mode Noise

* Pin-Selectable Gain Reduces Component Count

* Industry-Leading Integrated Click-and-Pop Suppression

* Low Quiescent Current (18mA)

* Low-Power Shutdown Mode (0.2µA)

* Short-Circuit and Thermal-Overload Protection

* Available in Thermally Efficient, Space-Saving Packages

* 32-Pin TQFN (5mm x 5mm x 0.8mm)-MAX9713

* 32-Pin TQFN (7mm x 7mm x 0.8mm)-MAX9714