LM4856LQ National Semiconductor, LM4856LQ Datasheet

LM4856LQ

Manufacturer Part Number

LM4856LQ

Description

Manufacturer

National Semiconductor

Datasheets

1.LM4856ITLX.pdf (23 pages)

2.LM4856LQ.pdf (23 pages)

Specifications of LM4856LQ

Case

SOP16

Date_code

06+

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Bonase Electronics (HK) Co., Limited

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LM4856

Integrated Audio Amplifier System

General Description

The LM4856 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

60mW (typ) per channel of continuous average power into

stereo 32Ω single-ended (SE) loads with 0.5% THD+N, us-

ing a 5V power supply.

The LM4856 features a 32 step digital volume control and

eight distinct output modes. The digital volume control and

output modes are programmed through a two-wire I

patible control interface, that allows flexibility in routing and

mixing audio channels.

The LM4856 is designed for cellular phone, PDA, and other

portable handheld applications. It delivers high quality output

power from a surface-mount package and requires only

eight external components.

The industry leading micro SMD package only utilizes 2mm

x 2.3mm of PCB space, making the LM4856 the most space

efficient audio sub system available today.

Typical Application

Boomer

is a registered trademark of National Semiconductor Corporation.

FIGURE 1. Typical Audio Amplifier Application Circuit

DS200607

C com-

Key Specifications

n THD+N at 1kHz, 1.1W into 8Ω BTL

n THD+N at 1kHz, 60mW into 32Ω SE

n Single Supply Operation

Features

n 1.1W (typ) output power with 8Ω mono BTL load

n 60mW (typ) output power with stereo 32Ω SE loads

n I

n Eight distinct output modes

n micro-SMD and LLP surface mount packaging

n "Click and Pop" suppression circuitry

n Thermal shutdown protection

n Low shutdown current (0.1uA, typ)

Applications

n Moblie Phones

n PDAs

C programmable 32 step digital volume control

20060732

www.national.com

2.6 to 5.0V

1.0% (typ)

0.5% (typ)

May 2004

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