Copyright  ANPEC Electronics Corp.
Rev. A.2 - Jul., 2005
APA2068
www.anpec.com.tw1
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 2.6W 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
• Maximum Output Swing Clamping Function
• SOP-16-P Packages with Thermal Pad Package
• Lead Free Available (RoHS Compliant)
Applications
General Description
Ordering and Marking Information
APA2068 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 APA2068
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 APA2068, 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, APA2068 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.
• NoteBook PC
• LCD Monitor or TV
APA2068
Handling Code
Temp. Range
Package Code
Package Code
KA : SOP-16-P
Operating Ambient Temp. Range
I : - 40 to 85 C
Handling Code
TU : Tube TR : Tape & Reel
Lead Free Code
L : Lead Free Device Blank : Original Device
°
APA2068 KA : APA2068XXXXX XXXXX - Date Code
Lead Free 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 and compatible with both SnPb and lead-free soldiering
operations. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J STD-020C
for MSL classification at lead-free peak reflow temperature.