MAX9708ETN+D

The MAX9708ETN+D is a 20W/40W, filterless, spread spectrum, mono/stereo, class D amplifier in 56 pin TQFN-EP package. The mono/stereo, class D audio power amplifier delivers up to 2 x 21W into an 8ohm stereo mode and 1 x 42W into a 4ohm load in mono mode while offering up to 87% efficiency. The MAX9708 provides class AB amplifier performance with the benefits of class D efficiency eliminating the need for a bulky heatsink and conserving power. The MAX9708 offers two modulation schemes, a fixed frequency modulation (FFM) mode and a spread spectrum modulation (SSM) mode that reduces EMI radiated emissions. The MAX9708 can be synchronized to an external clock from 600KHz to 1.2MHz. A synchronized output allows multiple units to be cascaded in the system. It includes fully differential inputs, comprehensive click and pop suppression and four selectable-gain settings (22dB, 25dB, 29.5dB and 36dB). The device is used in LCD TVs, PDP TVs and PC/ Hi-Fi audio solutions.

• Supply voltage range is 10V to 18V driving the load in a BTL configuration
• Operating temperature range from -40°C to 85°C
• Shutdown and mute control
• Low THD+N of 0.1%
• Pin programmable thermal flag provides seven different thermal warning threshold
• Short circuit and thermal overload protection
• High PSRR of 90dB at 1KHz

Applications

Audio, Portable Devices

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party