Copyright
ANPEC Electronics Corp.
Rev. A.5 - Mar., 2003
APA7063
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 1.5W Audio Power Amplifier with DC Volume Control
Features
General Description
Applications
Operating Voltage: 3.3V to 5V
DC Volume Control Interface, 0dB to 105dB
Depop Circuitry Integrated
Thermal shutdown protection circuitry
High supply voltage ripple rejection
Low Supply Current, I
DD
= 13mA at Stereo BTL
Low Shutdown Current, I
DD
= 0.7A
Bridge-Tied Load (BTL) or Single-Ended-(SE)
Modes Operation
Output Power at 1% THD+N, V
DD
=5V
-1.2 W/Ch (typ) into an 8
Load
Output Power at 10% THD+N, V
DD
=5V
-1.5 W/Ch (typ) into an 8
Load
Low Crossover Distortion
Low Quiescent Current
Bridge-tied or Stereo(Single-ended) Configura-
tions
Portable and Desktop Computers
Multimedia Monitors
Portable Radios, PDAs, and Portable TVs
The APA7063 is a monolithic integrated circuit that pro-
vides DC volume control, and a stereo bridged audio
power amplifiers capable of producing 1.5W(1.2W) into
8
with less than 10%(1.0%) THD+N. APA7063 pro-
vides a volume control pin DC_Vol determines the at-
tenuation of output of the amplifiers. The attenuator range
is from 0dB (DC_Vol=0.7V
DD
) to 105dB (DC_Vol=0V) with
32 steps. Both of the depop circuitry and the thermal
shutdown protection circuitry are integrated in the
APA7063, that reduces pops and clicks noise during power
up and when using the shutdown modes and protects
the chip from being destroyed by over temperature failure.
To simplify the audio system design applications, the
APA7063 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. The APA7063 also features a shutdown func-
tion which keeps the supply current only 0.7A (typ).
SHUTDOWN
V
CC
- OUT2
+ OUT2
Vo1
DC Vol
Vin1
1
2
3
4
5
6
7
8
+ OUT1
V
CC
- OUT1
Bypass
SE/BTL
GND
16
15
14
13
12
11
10
9
Vin2
Vo2
V
CC
Pin Description
Copyright
ANPEC Electronics Corp.
Rev. A.5 - Mar., 2003
APA7063
www.anpec.com.tw
2
A P A 7 0 6 3
P a c k a g e C o d e
J : P D IP - 1 6 K : S O P - 1 6
T e m p . R a n g e
I : - 4 0 to 8 5 C
H a n d lin g C o d e
T U : T u b e T R : T a p e & R e e l
H a nd lin g C o d e
T e m p . R a n g e
P a ck a g e C o d e
A P A 7 0 6 3 J :
A P A 7 0 6 3
X X X X X
X X X X X - D a te C o d e
A P A 7 0 6 3 K :
A P A 7 0 6 3
X X X X X
X X X X X - D a te C o d e
Block Diagram
(Over operating free-air temperature range unless otherwise noted.)
Symbol
Parameter
Rating
Unit
V
DD
Supply Voltage
6
V
T
A
Operating Ambient Temperature Range
-40 to 85
C
T
J
Maximum Junction Temperature
150
C
T
STG
Storage Temperature Range
-65 to +150
C
T
S
Soldering Temperature,10 seconds
260
C
V
ESD
Electrostatic Discharge
-2000 to 2000*
1
V
Absolute Maximum Ratings
Volume
Control
32 steps
-
+
Power
Management
Click and Pop
Suppression
Circuitry
-
+
Shutdown
V
CC
GND
Bypass
Bias
Vin2
-
+
-
+
10K
10K
20K
20K
-
+
+ OUT1
10K
20K
20K
10K
-
+
Vo2
Vin1
Vo1
- OUT1
- OUT2
+ OUT2
SE/BTL
Ordering and Marking Information
Copyright
ANPEC Electronics Corp.
Rev. A.5 - Mar., 2003
APA7063
www.anpec.com.tw
3
Electical Characteristics
Electrical Characteristics for Entire IC
The following specifications apply for V
DD
= 5V unless otherwise noted. Limits apply for T
A
= 25C
APA7063
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Supply Voltage
3.3
5.5
V
I
DD
Quiescent Power Supply
Current
V
IN
=0V, I
O
=0A
13
25
mA
I
SD
Shutdown Current
V
PIN 2
= V
DD
0.7
2.0
A
V
IH
SE/BTL High Input Voltage
4
V
V
IL
SE/BTL Low Input Voltage
0.8
V
Electrical Characteristics for Volume Attenuators
The following specifications apply for V
DD
= 5V. Limits apply for T
A
= 25C
APA7063
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Gain with V
pIN 3
=5V
0.5
C
RANGE
Attenuator Range
Attenuation with V
pIN 3
=0V
-100
-105
dB
Electrical Characteristics for BTL Mode Operation
The following specifications apply for V
DD
= 5V unless otherwise noted. Limits apply for T
A
= 25C
APA7063
Unit
Symbol
Parameter
Test Conditions
Typ.
V
OS
Output Offset Voltage
V
IN
=0V
5
mV
THD=1%, f=1kHz
R
L
=8
1.2
P
O
Output Power
THD=10%, f=1kHz
R
L
=8
1.5
W
A
VD
=2, 20Hz<f<20kHz, R
L
=8
, P
O
=1W
THD+N Total Harmonic Distortion + Noise
P
O
=340mW, R
L
=32
,
0.3
1.0
%
RSRR
Power Supply Rejection Ratio
V
RIPPLE
=200mV
Rms
, R
L
=8
C
B
=2.2
F, f=120Hz
74
dB
X
TALK
Channel Separation
f=1kHz , C
B
=2.2
F
95
dB
V
N
Output Noise Voltage
R
L
=8
,A-Wtd Filter
40
uV
Copyright
ANPEC Electronics Corp.
Rev. A.5 - Mar., 2003
APA7063
www.anpec.com.tw
4
Electical Characteristics (Cont.)
Electrical Characteristics for SE Mode Operation
The following specifications apply for V
DD
= 5V unless otherwise noted. Limits apply for T
A
= 25C
APA7063
Symbol
Parameter
Test Conditions
Typ.
Unit
V
DS
Output Offset Voltage
V
IN
=0V,
100
mV
P
O
Output Power
THD=1%, f=1KHZ, R
L
=32K
THD=10%, f=1KHZ, R
L
=32K
95
100
mW
A
V
= 1,V
OUT
=1 V
RMS
, f=1KHZ, R
L
=1K
0.01
THD+N Total Harmonic Distortion plus
Noise
P
O
= 75mW, R
L
=32K
, Av=1, f=1KHZ
0.05
RSRR Power Supply Rejection Ratio V
RIPPLE
= 200mV
RMS
, f=120Hz,C
B
=2.2
F
58
dB
X
TALK
Channel Separation
f=1KHZ, C
B
=2.2
F
95
dB
V
N
Output Noise Voltage
R
L
=1K
, A-Wtd Filter
30
uV
Pin Name
No
I/O
Description
Shutdown
1
1
Shutdown mode control signal input, place entire IC in shutdown mode
when held high, Idd=0.7uA.
VDD
2,10,15
Supply voltage input pin.
DC_Vol
3
I
Volume control function input pin.
Vo1
4
O
Channel 1 output for external feedback circuit.
Vin1
5
I
Audio input channel 1
Vin2
6
I
Audio input channel 2
Vo2
7
O
Channel 2 output for external feedback circuit.
GND
8
Ground connection for circuitry.
+OUT2
9
O
Channel 2 positive output in BTL mode and high impedance state in SE
mode.
-OUT2
11
O
Channel 2 negative output in BTL mode and in SE mode.
SE/BTL
12
I
Mode control signal input, hold low for BTL mode, hold high for SE mode.
Bypass
13
I
Connect to voltage divider for internal mid_supply bias
-OUT2
14
O
Channel 1 negative output in BTL mode and in SE mode.
+OUT1
16
O
Channel 1 positive output in BTL mode and high impedance state in SE
mode.
Pin Description
Copyright
ANPEC Electronics Corp.
Rev. A.5 - Mar., 2003
APA7063
www.anpec.com.tw
5
Typical Application Circuit
Shutdown +OUT1
VCC VCC
DC_Vol -OUT1
Vo1 Vbypass
Vi1 SE/BTL
Vi2 -OUT2
Vo2 VCC
GND +OUT2
R-in
L-in
R-ch
Headphone jack
L-ch
#8
#8
1
F
1
F
20k
20k
20k
20k
100k
100k
1k
1k
220
F
220
F
APA7063
R_var
1
F
r*=R_var/50
* Add a resistor to avoid volume control gain error at power on status. For the R_var with 10K
variable resistor, the recommended
value of r is in range of 100~200
.
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