MAX9708ETN+TD

音频功率放大器, 单声道/立体声, D, 2通道, 21 W, 10V 至 18V, TQFN, 56 引脚

The from Products is a 20W/40W, filterless, spread spectrum, mono/stereo, class D amplifier in 56 pin TQFN 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 mode and a spread spectrum modulation mode that reduces EMI radiated emissions. It 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. It used in LCD TVs, PDP TVs and PC/ Hi-Fi audio solutions.

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Supply voltage range is 10V to 18V, driving the load in a BTL configuration

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Operating temperature range from -40°C to 85°C

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Shutdown and mute control

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Low THD+N of 0.1%, switch on-resistance of 0.3ohm

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Pin programmable thermal flag provides seven different thermal warning threshold

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Short circuit and thermal overload protection, gain of 36dB at G1 = 0, G2 = 0

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High PSRR of 90dB at 1KHz, CMRR of 70dB at f = 20Hz to 20KHz, input referred

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Shutdown current of 0.1µA

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Input impedance of 21Kohm at G1= 0, G2 = 0

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Output offset voltage of ±30mV

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Automotive; LCD TVs; PC/HiFi Audio Solutions; PDP TVs