MAX98400AETX+

MAXIM INTEGRATED PRODUCTS  MAX98400AETX+  音频功率放大器, 高功率, D, 2通道, 44 W, 8V 至 28V, TQFN, 36 引脚

The is a stereo, high power class D amplifier in 36 pin TQFN package. This amplifier provides high performance and thermally efficient amplifier solutions. The MAX98400A delivers 2x20W into 8ohm loads or 1x40W into a 4ohm load. An integrated limiting circuit prevents output clipping distortion, protects small speakers from transient voltages and reduces power dissipation. A thermal foldback feature can be enabled to automatically reduce output power at above a junction temperature of +120°C. Traditional thermal protection is also available in addition to robust overcurrent protection. The device operates from a single 8V to 28V supply by eliminating the need for regulated power supply. Filterless modulation allows the MAX98400A to pass EN55022B EMI limits with 1m cables using only a low cost ferrite bead and small value capacitor on each output. Comprehensive click and pop reduction circuitry minimizes noise coming into and out of shutdown.

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Eight digitally controlled gain settings

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

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Low EMI, active emissions limiting

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Clipping limiter and thermal foldback

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Low quiescent current of 10mA dual supply mode and 16mA single supply mode

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Output power of 44W mono, RL = 4ohm, fIN = 1KHz

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Thermal and overcurrent protection

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Common mode rejection ratio of 60dB and PSRR of 67dB 1KHz, 100mVP-P ripple

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90% efficiency from 12V supply