LM4947 Datasheet PDF - Texas Instruments Mono Class D and Stereo Audio Sub-System Specs

LM4947 - Mono Class D and Stereo Audio Sub-System

Datasheet Summary

Description

The LM4947 is an audio subsystem capable of efficiently delivering 500mW (Class D operation) of continuous average power into a mono 8Ω bridgedtied 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

Features

1.
2 I2C Control Interface.
I2C Programmable Texas Instruments 3D Audio.
I2C Controlled 32 Step Digital Volume Control (-59.5dB to +18dB).
Three Independent Volume Channels (Left, Right, Mono).
Eight Distinct Output Modes.
Small, 25.
Bump DSBGA Packaging.
“Click and Pop” Suppression Circuitry.
Thermal Shutdown Protection.
Low Shutdown Current (0.1μA, typ).
RF Suppression.
Differential Mono an.

Datasheet Details

Part number	LM4947
Manufacturer	Texas Instruments
File Size	1.41 MB
Description	Mono Class D and Stereo Audio Sub-System
Datasheet	LM4947 Datasheet
Additional preview pages of the LM4947 datasheet.

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Full PDF Text Transcription

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LM4947, LM4947TLEVAL www.ti.com SNAS349D – JUNE 2006 – REVISED MAY 2013 LM4947 Mono Class D and Stereo Audio Sub-System with OCL Headphone Amplifier and TI 3D Check for Samples: LM4947, LM4947TLEVAL FEATURES 1 •2 I2C Control Interface • I2C Programmable Texas Instruments 3D Audio • I2C Controlled 32 Step Digital Volume Control (-59.5dB to +18dB) • Three Independent Volume Channels (Left, Right, Mono) • Eight Distinct Output Modes • Small, 25–Bump DSBGA Packaging • “Click and Pop” Suppression Circuitry • Thermal Shutdown Protection • Low Shutdown Current (0.1μA, typ) • RF Suppression • Differential Mono and Stereo Inputs • Stereo Input Mux KEY SPECIFICATIONS • THD+N at 1kHz, 500mW into 8Ω BTL (3.3V): 1.0% (typ) • THD+N at 1kHz, 37mW into 32Ω SE (3.3V): 1.

Published: May 19, 2023 |