Copyright  ANPEC Electronics Corp.

Rev. A.8 - Nov., 2002

APA2020

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-W Audio Power Amplifier

The APA2020 also served well in low-voltage

applications , which provides 800-mW per channel

into 4

Ω loads with a 3.3V supply voltage. Both of the

depop circuitry and the thermal shutdown protection

circuitry are integrated in the APA2020 , that reduces

pops and clicks noise during power up and when

using the shutdown or mute modes and protects the

chip from being destroyed by over-temperature

failure.

To simplify the audio system design in notebook

computer applications , the APA2020 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. For

power sensitive applications , the APA2020 also

features a shutdown function which keeps the supply

current only 0.5 µA (typ).

Features

•••••

Depop Circuitry Integrated

•••••

Thermal Shutdown Circuitry Integrated

•••••

Output Power at 1% THD+N, V

- 1.8 W/Ch (typ) into a 4

Ω Load

- 1.2 W/Ch (typ) into a 8

Ω Load

•••••

Bridge-Tied Load (BTL) or Single-Ended

(SE) Modes Operation

•••••

Various 24-Pin Power Packages Available

SOP, TSSOP-P

•••••

Shutdown Control Mode , I

Applications

•••••

Stereo Audio Power Amplifier for Notebook

Computer

General Description

Ordering and Marking Information

A P A 2020

Ha n d lin g Co d e

T e m p . R ang e

P a ck age C o de

P a ck age C o de

K : S O P

R : T SSO P - P *

T e m p . R ang e

I : - 4 0 to 8 5

C

H a n d lin g C o de

T U : T u b e

T R : T a p e & R e e l

T Y : T r a y

Le ad F r ee C o d e

L : L e a d F r e e D e v ic e

B la n k : O r ig in a l D e v ic e

°

A P A 202 0 K :

APA2 0 2 0

XXX XX

X X X X X - D a te C o d e

A P A 202 0 R :

APA2 0 2 0

XXX XX

X X X X X - D a te C o d e

Le ad F r ee C o d e

* TSSOP-P is a standard TSSOP package with a thermal pad exposure on the bottom of the package.

The APA2020 is a stereo bridge-tied audio power am-

plifier in various 24-pin power packages , including

SOP , TSSOP-P. When connecting to a 5V voltage

supply , the APA2020 is capable of delivering 1.8W/

1.2W of continuous RMS power per channel into 4

Ω/

8

Ω loads with less than 1% THD+N , respectively.

The APA2020 simplifies design and frees up board

space for other features.