APA2120RI-TR 查看數據表（PDF） - Anpec Electronics

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APA2120RI-TR

Stereo 2-W Audio Power Amplifier (with DC_Volume Control)

Anpec Electronics 

APA2120/2121

Stereo 2-W Audio Power Amplifier (with DC_Volume Control)

Features

General Description

• Low operating current with 14mA

• Improved depop circuitry to eliminate turn-on

and turn off transients in outputs

• High PSRR

• 32 steps volume adjustable by DC voltage with

hysteresis

• 2W per channel output power into 4Ω load at 5V,

BTL mode

• Two output modes allowable with BTL and SE

modes selected by SE/BTL pin

• Low current consumption in shutdown mode

(50µA)

• Short Circuit Protection

• Power off depop circuit integration

• TSSOP-24 with or without thermal pad package

APA2120/1 is a monolithic integrated circuit, which

provides precise DC volume control, and a stereo

bridged audio power amplifiers capable of producing

2.7W(2.0W) into 3Ω with less than 10% (1.0%)

THD+N. The attenuator range of the volume control

in APA2120/1 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

APA2120/1, that reduce pops and clicks noise dur-

ing 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

Applications

• NoteBook PC

• LCD Monitor or TV

design, APA2120/1 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. Besides, the

multiple input selection is used for portable audio

system.

Ordering and Marking Information

A PA 2120/1

H an dlin g C o de

Tem p. Range

Package Code

Package Code

R : TS S O P-P *

Tem p. Range

I : - 40 to 85 °C

H an dlin g C o de

TU : Tube

T Y : T ray

TR : Tape & Reel

A P A 2120/1 R :

A P A 2120/1

XXXXX

X X X X X - D ate C ode

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

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.

Copyright  ANPEC Electronics Corp.

1

Rev. A.1 - Mar., 2003

www.anpec.com.tw

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