LM4832MNOPB National Semiconductor, LM4832MNOPB Datasheet

LM4832MNOPB

Manufacturer Part Number

LM4832MNOPB

Description

SOP28

Manufacturer

National Semiconductor

Datasheet

1.LM4832MNOPB.pdf (23 pages)

Specifications of LM4832MNOPB

Date_code

09+

Current page: 1 of 23
Download datasheet (578Kb)

LM4832

Digitally Controlled Tone and Volume Circuit with Stereo

Audio Power Amplifier, Microphone Preamp Stage and

National 3D Sound

General Description

The LM4832 is a monolithic integrated circuit that provides

volume and tone (bass and treble) controls as well as a

stereo audio power amplifier capable of producing 250 mW

(typ) into 8Ω or 90 mW (typ) into 32Ω with less than 1.0%

THD. In addition, a two input microphone preamp stage, with

volume control, capable of driving a 1 kΩ load is imple-

mented on chip.

The LM4832 also features National’s 3D Sound circuitry

which can be externally adjusted via a simple RC network.

For maximum system flexibility, the LM4832 has an exter-

nally controlled, low-power consumption shutdown mode,

and an independent mute for power and microphone ampli-

fiers .

Boomer

to provide high quality audio while requiring few external

components. Since the LM4832 incorporates tone and vol-

ume controls, a stereo audio power amplifier and a micro-

phone preamp stage, it is optimally suited to multimedia

monitors and desktop computer applications.

Block Diagram

Boomer

is a registered trademark of National Semiconductor Corporation.

audio integrated circuits were designed specifically

DS100014

FIGURE 1. LM4832 Block Diagram

Key Specifications

n Output Power at 10% into 8Ω

n Output Power at 10% into 32Ω

n THD+N at 75mW into 32Ω at 1kHz

n Microphone Input Referred Noise

n Supply Current

n Shutdown Current

Features

n Independent Left and Right Output Volume Controls

n Treble and Bass Control

n National 3D Sound

n I

n Two Microphone Inputs with Selector

n Software Controlled Shutdown Function

Applications

n Multimedia Monitors

n Portable and Desktop Computers

C Compatible Interface

10001401

December 2003

www.national.com

350mW (typ)

100mW (typ)

0.5% (max)

13mA (typ)

7µV (typ)

4µA (typ)

Related parts for LM4832MNOPB

Related keywords

LM4832MNOPB datasheet
LM4832MNOPB data sheet
LM4832MNOPB pdf datasheet
LM4832MNOPB component
LM4832MNOPB part
LM4832MNOPB distributor
LM4832MNOPB RoHS
LM4832MNOPB datasheet download