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
音频, 便携式器材
(EN)
