APA2068
Stereo 2.6W Audio Power Amplifier (with DC_Volume Control)
General Description
Features
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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)
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
Applications
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by the SE/BTL input control pin signal.
NoteBook PC
LCD Monitor or TV
Ordering and Marking Information
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
Lead Free Code
Handling Code
Temp. Range
Package Code
APA2068 KA :
APA2068
XXXXX
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 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.
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.2 - Jul., 2005
1
www.anpec.com.tw
APA2068
Block Diagram
VOLMAX
LOUT+
LINVolum e
Control
LOUT-
RINB Y PA S S
BYPASS
ROUT+
VOLUME
SE/BTL
SE/BTL
ROUT-
Shutdown
ckt
SHUTDOWN
MUTE
VDD
Power and
Depop circuit
GND
Mute
APA2068_Block
Absolute Maximum Ratings
(Over operating free-air temperature range unless otherwise noted.)
Symbol
Parameter
VDD
Supply Voltage Range
VIN
TA
TJ
TSTG
TS
Input Voltage Range, SE/BTL,
SHUTDOWN, Mute
Operating Ambient Temperature Range
Maximum Junction Temperature
Storage Temperature Range
Soldering Temperature,10 seconds
VESD
Electrostatic Discharge
PD
Power Dissipation
Rating
Unit
-0.3 to 6
V
-0.3 to VDD+0.3
V
-40 to 85
1
Intermal Limited*
-65 to +150
260
-3000 to 3000*2
-200 to 200*3
Intermal Limited
°C
°C
°C
°C
V
Notes:
1.APA2068 integrated internal thermal shutdown protection when junction temperature ramp up to 150°C
2.Human body model: C=100pF, R=1500Ω, 3 positives pulse plus 3 negative pulses
3.Machine model: C=200pF, L=0.5µF, 3 positive pulses plus 3 negative pulses
Recommended Operating Conditions
Supply Voltage, VDD
High level threshold voltage, VIH
Low level threshold voltage, VIL
SHUTDOWN, Mute
Rev. A.2 - Jul., 2005
Max.
Unit
4.5
2
5.5
V
V
4
SE/BTL
1.0
SHUTDOWN, Mute
3
SE/BTL
Common mode input voltage, VICM
Copyright ANPEC Electronics Corp.
Min.
VDD-1.0
2
V
V
www.anpec.com.tw
APA2068
Thermal Characteristics
Symbol
Parameter
R THJA
Thermal Resistance from Junction to Ambient in Free Air
Value
Unit
45
°C/W
SOP-16-P
Electrical Characteristics
VDD=5V, -20°C
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