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LM4855 Datasheet Boomer Audio Power Amplifier

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM4855 Integrated Audio Amplifier System November 2002 LM4855 Integrated Audio Amplifier.

General Description

The LM4855 is an audio power amplifier system capable of delivering 1.1W (typ) of continuous average power into a mono 8Ω bridged-tied load (BTL) with 1% THD+N and 115mW (typ) per channel of continuous average power into stereo 32Ω BTL loads with 0.5% THD+N, using a 5V power supply.

The LM4855

Key Features

  • a 32 step digital volume control eight distinct output modes. The digital volume control output modes are programmed through a three-wire serial control interface, that allows flexibility in routing mixing audio channels. and and SPI and Key Specifications n THD+N at 1kHz, 1.1W into 8Ω BTL n THD+N at 1kHz, 115mW into 32Ω BTL n Single Supply Operation 1.0% (typ) 0.5% (typ) 2.6 to 5.0V Features n n n n n n n n 1.1W (typ) output power with 8Ω mono BTL load 115mW (typ) output power with stereo 32Ω.

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