APA3002
12W Stereo Class-D Audio Power Amplifier
Features
•
•
•
•
•
•
•
•
•
•
•
Class-D Operation with High Efficiency.
32-Step DC Volume Control With Hysteresis
9W Per Channel Output Power into 8Ω Load at
12V, Class-D Output
12W Per Channel Output into 6Ω Load at 12V,
Class-D Output
5V LDO Output for Powering APA4801 Head-
phone Driver
Line Output for APA4801 Headphone Driver with
DC Volume Control
Low Current Consumption in Shutdown Mode
(10µA, Typical)
APA3002 will Auto-Recovery after Over-Current
Protection
Thermal and Over-Current Protections
TQFN7x7-48 with Thermal Pad Package
TQFP7x7-48P with Thermal Pad Package
Lead Free and Green Devices Available
(RoHS Compliant)
General Description
The APA3002 is a monolithic integrated circuit, which pro-
vides precise DC volume control, and a stereo Class-D
audio power amplifiers capable of producing 9W into 8Ω
(12V) with less than 10% THD+N. The attenuator range
of the volume control in the APA3002 is from 36dB
(V
VOLUME
=5V) to -40dB (V
VOLUME
=0V) with 32 steps. The ad-
vantage of internal gain setting can be less components
and PCB area. The circuitries of both thermal and the
over-current protections are integrated in the APA3002. It
protects the chip from being destroyed by over tempera-
ture and over current failure.
To simplify the audio system design, the APA3002 com-
bines a line output for external headphone driver with
volume control and a 5V regulator for external headphone
drive, where the speaker output can be switched off by
the headphone jack’ switch pin that connects to the
s
APA3002’ mode pin as shown in the application circuit.
s
Applications
•
•
LCD TV
Active Speaker
Ordering and Marking Information
APA3002
Assembly Material
Handling Code
Temperature Range
Package Code
APA3002 QB:
Package Code
QB: TQFN7x7-48
QCA: TQFP7x7-48P
Operating Ambient Temperature Range
I : -40 to 85
o
C
Handling Code
TR: Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
XXXXX - Date Code
APA3002
XXXXX
APA3002 QCA:
APA3002
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. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
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.6 - Sep., 2009
1
www.anpec.com.tw
APA3002
Pin Configurations
RBS-
RPVDD
RPVDD
ROUT-
ROUT-
RPGND
RPGND
ROUT+
ROUT+
RPVDD
RPVDD
RBS+
RBS-
RPVDD
RPVDD
ROUT-
ROUT-
RPGND
RPGND
ROUT+
ROUT+
RPVDD
RPVDD
RBS+
36
35
34
33
32
31
30
29
28
27
26
25
RCLAMP
SD 1
MODEOUT
RIN- 2
MODE
RIN+ 3
AVDD
2.5VREF 4
RVAROUT
LIN+ 5
LVAROUT
LIN- 6
AGND
LDOREF 7
VREF 8
5VLDO
VARDIFF 9
COSC
VARMAX 10
ROSC
VOLUME 11
AGND
LCLAMP REFGND 12
48
47
46
45
44
43
42
41
40
39
38
37
SD 1
RIN- 2
RIN+ 3
2.5VREF 4
LIN+ 5
LIN- 6
LDOREF 7
VREF 8
VARDIFF 9
VARMAX 10
VOLUME 11
REFGND 12
48
47
46
45
44
43
42
41
40
39
38
37
APA3002
(APA3002D)
APA3002
36
35
34
33
32
31
30
29
28
27
26
25
RCLAMP
MODEOUT
MODE
AVDD
RVAROUT
LVAROUT
AGND
5VLDO
COSC
ROSC
AGND
LCLAMP
LBS-
LPVDD
LPVDD
LOUT-
LOUT-
LPGND
LPGND
LOUT+
LOUT+
LPVDD
LPVDD
LBS+
13
14
15
16
17
18
19
20
21
22
23
24
TQFN7x7-48
(TOP VIEW)
Absolute Maximum Ratings
Symbol
V
DD
V
MODE
, V
VREF
, V
VOLUME
,
V
VARDIFF
, V
VARMAX
V
SD
V
RIN+
, V
RIN-
,V
LIN+
,V
LIN-
I
5VLDO
I
LDOREF
T
J
T
STG
T
SDR
P
D
R
L
(Note 1)
(Over operating free-air temperature range unless otherwise noted.)
Parameter
Supply Voltage (AVDD to AGND, LPVDD to LPGND, and
RPVDD to RPGND)
Input Voltage (MODE to AGND, VREF, VOLUME, VARDIFF,
and VARMAX to REFGND)
Input Voltage (SD to AGND)
Input Voltage (RIN+, RIN-, LIN+, and LIN- to AGND)
Input Voltage (RPGND and LPGND to AGND)
Output Current (5VLDO)
Output Current (LDOREF)
Maximum Junction Temperature
Storage Temperature Range
Maximum Lead Soldering Temperature, 10 Seconds
Power Dissipation
Class-D Power Amplifier Minimum Load Resistance
Rating
-0.3 to 15
-0.3 to 5.5
-0.3 to V
DD
+0.3
-0.3 to 7
-0.3 to +0.3
120
20
150
-65 to +150
260
Internally Limited
4
mA
ο
ο
LBS-
LPVDD
LPVDD
LOUT-
LOUT-
LPGND
LPGND
LOUT+
LOUT+
LPVDD
LPVDD
LBS+
TQFP7x7-48P
(TOP VIEW)
13
14
15
16
17
18
19
20
21
22
23
24
Unit
V
V
C
C
C
ο
W
Ω
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Copyright
©
ANPEC Electronics Corp.
Rev. A.6 - Sep., 2009
2
www.anpec.com.tw
APA3002
Thermal Characteristics
Symbol
θ
JA
Parameter
Thermal Resistance -Junction to Ambient
(Note 2)
TQFN7x7-48
TQFP7x7-48P
21
25
Typical Value
Unit
ο
C/W
Note 2: Please refer to “Thermal Pad Consideration”. The Thermal Pad on the bottom of the IC should be soldered directly to the PCB’
s
Thermal Pad area connected to the ground plan by several thermal vias, and the PCB is a 2-layer, 5-inch square area with 2oz copper
thickness.
Recommended Operating Conditions
Symbol
V
DD
Supply Voltage
Volume Reference Voltage
Volume Control Pin, Input Voltage
V
IH
High-level Input Voltage
VREF
VOLUME, VARMAX, VARDIFF
SD
MODE
Low-level Input Voltage
High-level Output Voltage
Low-level Output Voltage
Oscillator Frequency
Operating Free-Air Temperature
Class-D Power Amplifier Minimum Load Resistance
SD
MODE
MODEOUT sources 1mA
MODEOUT sinks 1mA
Parameter
Range
Min.
8.5
3.0
-
2
3.5
-
-
V
5VLDO
-100m
-
225
-40
6
Max.
14
5.5
5.5
-
-
0.8
2
-
+100m
275
85
-
Unit
V
V
V
V
V
V
V
V
V
kHz
°
C
Ω
V
IL
V
OH
V
OL
f
OSC
T
A
R
L
V
DD
=12V, DGND=AGND=0V, T
A
= 25
ο
C (unless otherwise noted)
Symbol
V
DD
I
DD
I
SD
Parameter
Supply Voltage
V
DD
Supply Current
V
DD
Shutdown Current
Class-D mode, V
MODE
=0V, V
SD
=5V,
no load
VAROUT mode, V
MODE
=5V, V
SD
=5V,
no load
V
SD
= 0V
Test Condition
APA3002
Min.
8.5
-
-
-
Typ.
-
20
3
10
Max.
14
40
6
100
Unit
V
mA
mA
µA
Electrical Characteristics
CLASS-D MODE, A
V
=15.7dB (VOLTAGE GAIN=RATIO OF THE FILTERED OUTPUT VOLTAGE TO INPUT VOLTAGE)
THD+N = 1%, f
in
= 1kHz, R
L
= 6Ω
P
O
Output Power
THD+N = 1%, f
in
= 1kHz, R
L
= 8Ω
THD+N = 10%, f
in
= 1kHz, R
L
= 6Ω
THD+N = 10%, f
in
= 1kHz, R
L
= 8Ω
THD+N
Crosstalk
PSRR
Total Harmonic Distortion Plus
Noise
Channel Separation
Power Supply Rejection Ratio
P
O
= 5W, f
in
= 1kHz, R
L
= 8Ω
P
O
= 5W, f
in
=1kHz, C
B
=1µF
R
L
= 8Ω, f
in
= 120Hz
-
6
-
-
-
-
-
10
7.5
12
9
0.2
90
85
-
-
-
-
-
-
-
%
dB
dB
W
Copyright
©
ANPEC Electronics Corp.
Rev. A.6 - Sep., 2009
3
www.anpec.com.tw
APA3002
Electrical Characteristics (Cont.)
V
DD
=12V, DGND=AGND=0V, T
A
= 25
ο
C (unless otherwise noted)
Unit
Min.
Typ.
Max.
CLASS-D MODE, A
V
=15.7dB (VOLTAGE GAIN=RATIO OF THE FILTERED OUTPUT VOLTAGE TO INPUT VOLTAGE)
(CONT.)
With A-Weighting Filter
S/N
-
85
-
dB
P
O
= 5W, R
L
= 8Ω
V
OS
Output Offset Voltage
-
-
20
mV
R
L
= 8Ω
V
n
Noise Output Voltage
High side
R
ds(on)
Power MOSFET Drain-Source
On-State Resistance
I
O
=1A
Low side
Total
VAROUT OUTPUT, A
V
=10dB
P
O
Output Power
Total Harmonic Distortion Plus
Noise
THD+N = 1%, f
in
= 1kHz, R
L
= 32Ω
THD+N = 10%, f
in
= 1kHz, R
L
= 32Ω
THD+N
f
in
= 1kHz, R
L
= 32Ω, P
O
= 14mW,
V
O
= 1V
rms,
R
L
=47kΩ, f
in
=1kHz
Crosstalk
PSRR
V
os
S/N
V
n
Noise Output Voltage
Channel Separation
Power Supply Rejection Ratio
Output Offset Voltage
P
O
=14mW, R
L
= 32Ω, f
in
=1kHz,
C
B
=1µF
C
B
= 1µF, R
L
= 32Ω, f
in
=120Hz,
V
RR
=0.2V
rms
R
L
= 32Ω
With A-Weighting Filter
P
O
= 20mW, R
L
= 32Ω,
C
B
= 1µF
-
-
-
-
-
-
-
-
-
20
25
0.05
0.005
63
85
-
80
30
-
-
-
-
-
-
20
-
-
dB
dB
mV
dB
µV
(rms)
V
V
dB
%
mW
-
-
-
-
250
300
250
550
-
-
-
650
mΩ
µV
(rms)
Symbol
Parameter
Test Condition
APA3002
LINEAR REGULATORS (LDO)
V
5VLDO
V
2.5VREF
PSRR
5V LDO Regulator Output
2.5V Reference Voltage
Power Supply Rejection Ratio
I
5VLDO
=0-100mA, V
SD
=5V
No load
C
B
= 1µF, f
in
= 120Hz
4.5
0.45X
V
5VLDO
5
0.50X
V
5VLDO
5.5
0.55X
V
5VLDO
-
73
-
Copyright
©
ANPEC Electronics Corp.
Rev. A.6 - Sep., 2009
4
www.anpec.com.tw
APA3002
Typical Operating Characteristics
Efficiency vs. Output Power
100
90
80
Efficiency (%)
Efficiency (%)
100
90
80
70
60
50
40
30
20
10
V
DD
=12V
R
L
=8Ω+33µH
A
V
=36dB
Bead filter
AUX-0025
AES-17(20kHz)
Class-D
Efficiency vs. Output Power
70
60
50
40
30
20
10
0
0
2
V
DD
=12V
R
L
=8Ω
A
V
=36dB
Bead filter
AUX-0025
AES-17(20kHz)
Class-D
4
6
8
Output Power (W)
10
12
0
0
2
4
6
8
Output Power (W)
10
12
Output Power vs. Load Resistance
18
16
14
Output Power (W)
12
10
8
6
4
2
0
6
V
DD
=14V
THD+N=1%
V
DD
=8.5V
THD+N=10%
V
DD
=8.5V
THD+N=1%
V
DD
=14V
THD+N=10%
C
i
=1µF
A
v
=36dB
f
in
=1kHz
AUX-0025
AES-17
(20kHz)
Class-D
Output Power vs. Supply Voltage
14
C
i
=1µF
R
L
=8Ω
12
A
V
=36dB
f
in
=1kHz
AUX-0025
10
AES-17 (20kHz)
Class-D
THD+N=10%
Output Power (W)
8
6
4
2
8.5 9
THD+N=1%
8
10
12
14
Load Resistance (Ω)
16
12
10
11
Supply Voltage (V)
13
14
Output Power vs. Supply Voltage
18
16
Output Power (W)
14
12
10
8
THD+N=1%
C
i
=1µF
R
L
=6Ω
A
v
=36dB
f
in
=1kHz
AUX-0025
AES-17 (20kHz)
Class-D
THD+N vs. Output Power
10
V
DD
=12V
C
i
=1µF
R
L
=6Ω
A
v
=15.7dB
AUX-0025
AES-17
(20kHz)
Class-D
THD+N=10%
f
in
=1kHz
1
THD+N (%)
0.1
f
in
=50Hz
6
4
8.5 9
10
11
12
Supply Voltage (V)
13
14
f
in
=15kHz
0.01
0.005
10m
100m
1
Output Power (W)
10 20
Copyright
©
ANPEC Electronics Corp.
Rev. A.6 - Sep., 2009
5
www.anpec.com.tw
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