Copyright

© ANPEC Electronics Corp.

Rev. A.4 - Jul., 2013

APA2120/2121

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 (with DC_Volume Control)

APA2120/1 is a monolithic integrated circuit, which pro-

vides precise DC volume control, and a stereo bridged

audio power amplifiers is capable of producing 2.7W(2.

0W) into 3

Ω with less than 10% (1.0%)THD+N. The at-

tenuator 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 inte-

grated in APA2120/1 and 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 cur-

rent failure. To simplify the audio system design, APA2120/

1 combines a stereo bridge-tied loads (BTL) mode for

speaker drive and a stereo single-end (SE) mode for head-

phone 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.

•

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 4

Ω 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

(50

µA)

•

Short Circuit Protection

•

Power off Depop Circuit Integration

•

TSSOP-24P with or without Thermal Pad

Package

•

Lead Free and Green Devices Available

(RoHS Compliant)

Features

Applications

General Description

Ordering and Marking Information

•

NoteBook PC

•

LCD Monitor or TV

Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which

are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for

MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen

free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by

weight).

APA2120/1

Handling Code

Temperature Range

Package Code

Package Code

R : TSSOP-24P

Operating Ambient Temperature Range

Handling Code

TR : Tape & Reel

Assembly Material

G : Halogen and Lead Free Device

APA2120/1 R :

APA2120/1

XXXXX

XXXXX - Date Code

Assembly Material