Copyright

© ANPEC Electronics Corp.

Rev. A.1 - Aug., 2005

APA2069

www.anpec.com.tw

1

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise

customers to obtain the latest version of relevant information to verify before placing orders.

Stereo 2.6W Audio Power Amplifier (with DC_Volume Control)

Features

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Low Operating Current with 9mA

•

Improved Depop Circuitry to Eliminate Turn-on

and Turn-off Transients in Outputs

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High PSRR

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32 Steps Volume Adjustable by DC Voltage

with Hysteresis

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2.6W per Channel Output Power into 4

Ω Load

at 5V,BTL Mode

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Two Output Modes Allowable with BTL and SE

Modes Selected by SE/BTL pin

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Low Current Consumption in Shutdown Mode

(1

µA)

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Short Circuit Protection

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Thermal shutdown protection and over current

protection circuitry

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Power DIP-16 Package

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Lead Free Available (RoHS Compliant)

Applications

General Description

APA2069 is a monolithic integrated circuit, which

provides precise DC volume control, and a stereo

bridged audio power amplifiers capable of producing

2.6W (1.8W) into 4

Ω withlessthan 10%(1.0%)THD+N.

The attenuator range of the volume control in APA2069

is from 20dB (DC_Vol=0V) to -80dB (DC_Vol=3.54V)

with 32 steps. The advantage of internal gain setting

can be less components and PCB area. Both of the

depop circuitry and the thermal shutdown protection

circuitry are integrated in APA2069, that reduce pops

and clicks noise during power up or shutdown mode

operation. It also improves the power off pop noise

and protects the chip from being destroyed by over

temperature and short current failure. To simplify the

audio system design, APA2069 combines a stereo

bridge-tied loads (BTL) mode for speaker drive and a

stereo single-end (SE) mode for headphone drive into

a single chip, where both modes are easily switched

by the SE/BTL input control pin signal.

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NoteBook PC

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LCD Monitor or TV