The MAX9708ETN+TD from Maxim Integrated 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.

• 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%, switch on-resistance of 0.3ohm
• Pin programmable thermal flag provides seven different thermal warning threshold
• Short circuit and thermal overload protection, gain of 36dB at G1 = 0, G2 = 0
• High PSRR of 90dB at 1KHz, CMRR of 70dB at f = 20Hz to 20KHz, input referred
• Shutdown current of 0.1µA
• Input impedance of 21Kohm at G1= 0, G2 = 0
• Output offset voltage of ±30mV
• Automotive, LCD TVs, PC/HiFi Audio Solutions, PDP TVs

Полупроводники - Микросхемы\Усилители и Компараторы\Аудио Усилители

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