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LM4947 Datasheet Mono Class D and Stereo Audio Subsystem

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: www.DataSheet4U.com LM4947 Mono Class D and Stereo Audio Subsystem with OCL Headphone Amplifier and National 3D October 2006 LM4947 Mono Class D and Stereo Audio Subsystem with OCL Headphone Amplifier and National.

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General Description

The LM4947 is an audio subsystem capable of efficiently delivering 500mW (Class D operation) of continuous average power into a mono 8Ω bridged-tied load (BTL) with 1% THD+N, 37mW (Class AB operation) power channel of continuous average power into stereo 32Ω single-ended (SE) loads with 1% THD+N, or an output capacitor-less (OCL) configuration with identical specification as the SE configuration, from a 3.3V power supply.

The LM4947 has six input channels: one pair for a twochannel stereo signal, the second pair for a secondary twochannel stereo input, and the third pair for a differential single-channel mono input.

Additionally, the two sets of stereo inputs may be configured as a single stereo differential input (differential left and differential right).

Key Features

  • a 32-step digital volume control and eight distinct output modes. The digital volume control, 3D enhancement, and output modes are programmed through a two-wire I2C compatible interface that allows flexibility in routing and mixing audio channels. The RF suppression circuitry in the LM4947 makes it wellsuited for GSM mobile phones and other portable.

📁 Similar Datasheet

Brand Logo Part Number Description Manufacturer
Texas Instruments Logo LM4947 Mono Class D and Stereo Audio Sub-System Texas Instruments
Texas Instruments Logo LM4947TLEVAL Mono Class D and Stereo Audio Sub-System Texas Instruments

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