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BUY TDA7564 https://www.utsource.net/itm/p/1166666.html
MULTIFUNCTION QUAD POWER AMPLIFIER WITH BUILT-IN DIAGNOSTICS FEATURES
Description: The TDA7564 is a four-channel car radio amplifier IC from STMicroelectronics. Features: -Four-channel car radio amplifier -High output power: 4x25W/4Ω -Low external component count -High efficiency: up to 80% -Low distortion: 0.1% -Low quiescent current -Thermal protection -Short circuit protection -Overvoltage protection -Undervoltage protection Applications: The TDA7564 is suitable for use in car radio systems, as well as other audio applications. (For reference only)