LM4946 Datasheet PDF - Texas Instruments Output Capacitor-Less Audio Subsystem Specs

LM4946 - Output Capacitor-Less Audio Subsystem

Datasheet Summary

Description

The LM4946 is an audio power amplifier capable of delivering 540mW of continuous average power into a mono 8Ω bridged-tied load (BTL) with 1% THD+N, 35mW per channel of continuous average power into stereo 32Ω single-ended (SE) loads with 1% THD+N, or an output capacitor-less (OCL) configuration wit

Features

1.
2 I2C/SPI Control Interface.
I2C/SPI Programmable TI 3D Audio.
I2C/SPI Controlled 32 Step Digital Volume Control (-54dB to +18dB).
Three Independent Volume Channels (Left, Right, Mono).
Eight Distinct Output Modes.
WQFN and DSBGA Surface Mount Packaging.
“Click and Pop” Suppression Circuitry.
Thermal Shutdown Protection.
Low Shutdown Current (0.02uA, typ).
RF Immunity Topology.

Datasheet Details

Part number	LM4946
Manufacturer	Texas Instruments
File Size	1.48 MB
Description	Output Capacitor-Less Audio Subsystem
Datasheet	LM4946 Datasheet
Additional preview pages of the LM4946 datasheet.

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Full PDF Text Transcription

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LM4946 www.ti.com SNAS335E – JANUARY 2006 – REVISED AUGUST 2007 LM4946 Output Capacitor-Less Audio Subsystem with Programmable TI 3D Check for Samples: LM4946 FEATURES 1 •2 I2C/SPI Control Interface • I2C/SPI Programmable TI 3D Audio • I2C/SPI Controlled 32 Step Digital Volume Control (-54dB to +18dB) • Three Independent Volume Channels (Left, Right, Mono) • Eight Distinct Output Modes • WQFN and DSBGA Surface Mount Packaging • “Click and Pop” Suppression Circuitry • Thermal Shutdown Protection • Low Shutdown Current (0.02uA, typ) • RF Immunity Topology APPLICATIONS • Mobile Phones • PDAs KEY SPECIFICATIONS • THD+N at 1kHz, 540mW into 8Ω BTL (3.3V) 1.0% (typ) • THD+N at 1kHz, 35mW into 32Ω SE (3.3V) 1.0% (typ) • Single Supply Operation (VDD) 2.7 to 5.

Published: May 19, 2023 |