APA2120_13 Datasheet, PDF (1/27 Pages) Anpec Electronics Coropration – Stereo 2-W Audio Power Amplifier (with DC_Volume Control)

APA2120/2121
Stereo 2-W Audio Power Amplifier (with DC_Volume Control)
Features
• 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-24P with or without Thermal Pad
Package
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• NoteBook PC
• LCD Monitor or TV
General Description
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 3Ω 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.
Ordering and Marking Information
APA2120/1
Assembly Material
Handling Code
Temperature Range
Package Code
Package Code
R : TSSOP-24P
Operating Ambient Temperature Range
I : - 40 to 85 ^oC
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
APA2120/1 R :
APA2120/1
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XXXXX - Date Code
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).
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.4 - Jul., 2013
www.anpec.com.tw