Copyright
ANPEC Electronics Corp.
Rev. A.4 - Aug., 2005
APA2065
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 2.7-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 4
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
A)
Short Circuit Protection
Power Off Depop Circuit Integration
PDIP-16 & SOP-16 Packages Available
Lead Free Available (RoHS Compliant)
Applications
General Description
APA2065 is a monolithic integrated circuit, which
provides precise DC volume control, and a stereo
bridged audio power amplifiers capable of producing
2.7W(2.0W) into 3
with less than 10%(1.0%) THD+N.
The attenuator range of the volume control in APA2065
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 APA2065, 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, APA2065 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
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Aug., 2005
APA2065
www.anpec.com.tw
2
Block Diagram
Shutdown
ckt
Volume
Control
SE/BTL
LOUT+
LOUT-
ROUT+
ROUT-
LIN-
RIN-
SE/BTL
SHUTDOWN
VOLUME
BYPASS
BYPASS
POW ER and
Depop circuit
GND
VDD
Ordering and Marking Information
APA2065
Handling Code
Temp. Range
Package Code
Package Code
J : PDIP-16 K : SOP-16
Temp. Range
I : - 40 to 85 C
Handling Code
TU : Tube TR : Tape & Reel
TY : Tray
Lead Free Code
L : Lead Free Device Blank : Original Device
APA2065 J :
APA2065
XXXXX
XXXXX - Date Code
Lead Free Code
APA2065 K :
APA2065
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.
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Aug., 2005
APA2065
www.anpec.com.tw
3
Min.
Max.
Unit
Supply Voltage, V
DD
4.5
5.5
V
SHUTDOWN
2
High level threshold voltage, V
IH
SE/BTL
4
V
SHUTDOWN
1.0
Low level threshold voltage, V
IL
SE/BTL
3
V
Common mode input voltage, V
ICM
V
DD
-1.0
V
Symbol
Parameter
Value
Unit
R
THJA
Thermal Resistance from Junction to Ambient in Free Air
PDIP-16
SOP-16
45
60
K/W
K/W
Recommended Operating Conditions
Thermal Characteristics
(Over operating free-air temperature range unless otherwise noted.)
Symbol
Parameter
Rating
Unit
V
DD
Supply Voltage Range
-0.3 to 6
V
V
IN
Input Voltage Range, SE/BTL,
SHUTDOWN
-0.3 to V
DD
+0.3
V
T
A
Operating Ambient Temperature Range
-40 to 85
C
T
J
Maximum Junction Temperature
Intermal Limited*
1
C
T
STG
Storage Temperature Range
-65 to +150
C
T
S
Soldering Temperature,10 seconds
260
C
V
ESD
Electrostatic Discharge
-3000 to 3000*
2
-200 to 200*
3
V
P
D
Power Dissipation
Intermal Limited
Absolute Maximum Ratings
Note:
1.APA2065 integrated internal thermal shutdown protection when junction temperature ramp up to 150C
2.Human body model: C=100pF, R=1500
, 3 positives pulse plus 3 negative pulses
3.Machine model: C=200pF, L=0.5
F, 3 positive pulses plus 3 negative pulses
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Aug., 2005
APA2065
www.anpec.com.tw
4
Operating Characteristics, BTL mode V
DD
=5V,T
A
=25C,R
L
=4
, Gain=2V/V (unless otherwise noted)
Electrical Characteristics
Operating Characteristics, SE mode V
DD
=5V,T
A
=25C,R
L
=4
, Gain=1V/V (unless otherwise noted)
APA2065
Symbol
Parameter
Test Condition
Min. Typ. Max.
Unit
THD=10%, R
L
=8
, Fin=1kHz
400
THD=10%, R
L
=32
, Fin=1kHz
110
THD=1%, R
L
=8
, Fin=1kHz
320
P
O
Maximum Output Power
THD=1%, R
L
=32
, Fin=1kHz
90
mW
P
O
=250mW, R
L
=8
, Fin=1kHz
0.08
THD+N Total Harmonic Distortion Plus
Noise
P
O
=75mW, R
L
=32
, Fin=1kHz
0.08
%
PSRR Power Ripple Rejection Ratio
V
IN
=0.1Vrms, R
L
=8
, C
B
=1
F,
Fin=120Hz
48
dB
Xtalk Channel Separation
C
B
=1
F, R
L
=32
, Fin=1kHz
100
dB
S/N
Signal to Noise Ratio
P
O
=75mW, SE, R
L
=32
, A_wieght
100
dB
V
DD
=5V, -20C<T
A
<85C
(unless otherwise noted)
APA2065
Symbol
Parameter
Test Condition
Min. Typ. Max.
Unit
V
DD
Supply Voltage
4.5
5.5
V
SE/BTL=0V
14
25
I
DD
Supply Current
SE/BTL=5V
8.0
15
mA
I
SD
Supply Current in Shutdown
Mode
SE/BTL=5V
SHUTDOWN=0V
50
A
I
IH
High input Current
900
nA
I
IL
Low Input Current
900
nA
V
OS
Output Differential Voltage
5
mV
APA2065
Symbol
Parameter
Test Condition
Min. Typ. Max.
Unit
THD=10%, R
L
=3
, Fin=1kHz
2.7
THD=10%, R
L
=4
, Fin=1kHz
2.3
THD=10%, R
L
=8
, Fin=1kHz
1.5
THD=1%, R
L
=3
, Fin=1kHz
2.0
THD=1%, R
L
=4
, Fin=1kHz
1.9
P
O
Maximum Output Power
THD=0.5%, R
L
=8
, Fin=1kHz
1
1.1
W
P
O
=1.5W, R
L
=4
, Fin=1kHz
0.05
THD+N Total Harmonic Distortion Plus
Noise
P
O
=1W, R
L
=8
, Fin=1kHz
0.07
%
PSRR Power Ripple Rejection Ratio
V
IN
=0.1Vrms, R
L
=8
, C
B
=1
F,
Fin=120Hz
60
dB
Xtalk Channel Separation
C
B
=1
F, R
L
=8
, Fin=1kHz
90
dB
S/N Signal to Noise Ratio
P
O
=1.1W, R
L
=8
, A_wieght
95
dB
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Aug., 2005
APA2065
www.anpec.com.tw
5
Pin Description
Pin
Name
Config.
Description
GND
Ground connection, Connected to thermal pad.
VOLUME
I/P
Input signal for internal volume gain setting.
LOUT+
O/P
Left channel positive output in BTL mode and SE mode.
LIN-
I/P
Left channel input terminal
LOUT-
O/P
Left channel negative output in BTL mode and high impedance in SE mode.
BYPASS
Bias voltage generator
SE/BTL
I/P
Output mode control input, high for SE output mode and low for BTL mode.
ROUT-
O/P
Right channel negative output in BTL mode and high impedance in SE
mode.
VDD
Supply voltage for internal circuit excepting power amplifier.
ROUT+
O/P
Right channel positive output in BTL mode and SE mode.
SHUTDOWN
I/P
It will be into shutdown mode when pull low.
RIN-
I/P
Right channel input terminal
Pin Function Description
SE/BTL
SHUTDOWN
Operating mode
X
L
Shutdown mode
L
H
BTL out
H
H
SE out
Control Input Table
14 SE/BTL
GND 4
13 GND
LIN- 8
GND 5
15 ROUT-
VOLUME 6
12 GND
SHUTDOWN 2
RIN- 3
16 VDD
11 BYPASS
10 LOUT-
LOUT+ 7
ROUT+ 1
9 VDD
APA2065
PDIP-16
10 SE/BTL
16 GND
9 GND
LIN- 4
GND 1
11 ROUT-
VOLUME 2
GND 8
14 SHUTDOWN
15 RIN-
12 VDD
BYPASS 7
LOUT- 6
LOUT+ 3
13 ROUT+
V DD 5
APA2065
SOP-16
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