APA2069
Stereo 2.6W Audio Power Amplifier (with DC_Volume Control)
Features
•
•
•
•
•
•
•
•
•
•
•
Low Operating Current with 9mA
Improved Depop Circuitry to Eliminate Turn-on
and Turn-off Transients in Outputs
High PSRR
32 Steps Volume Adjustable by DC Voltage
with Hysteresis
2.6W 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
(1µA)
Short Circuit Protection
Thermal shutdown protection and over current
protection circuitry
Power DIP-16 Package
Lead Free Available (RoHS Compliant)
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 4Ω with less than 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.
Applications
•
•
NoteBook PC
LCD Monitor or TV
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.
Rev. A.1 - Aug., 2005
1
www.anpec.com.tw
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
