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The LA42052-E is a monolithic linear audio amplifier integrated circuit (IC) manufactured by Sanyo. This 2-channel audio power amplifier is specifically intended for television applications. It delivers a power output of 5W per channel into an 8Ω load with a supply voltage of 18V. The amplifier incorporates several valuable features, including a standby function to minimise power consumption when not in use, a pop noise reduction circuit to eliminate unwanted transient sounds during power-up and power-down, and a ripple filter to improve the quality of the amplified audio. Furthermore, the LA42052-E features a thermal protection circuit to prevent damage from overheating, ensuring reliable operation.
The Sanyo LA42052-E offers a compelling solution for audio amplification needs, particularly in television designs, due to its integrated features and performance. Firstly, its dual-channel configuration allows stereo audio output from a single IC, simplifying circuit design and reducing the component count. The inclusion of a DC volume control feature enables easy and direct adjustment of the audio level using a DC voltage, which can be conveniently implemented with microcontrollers or other control circuitry.
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