apa3002 Anpec Electronics Corporation, apa3002 Datasheet - Page 13

• Manufacturer Part Number: apa3002
• Description: 12w Stereo Class-d Audio Power Amplifier
• Manufacturer: Anpec Electronics Corporation

Pin Description
Copyright
Rev. A.6 - Sep., 2009
APA3002
14,15,22
38,39,46
16,17
18,19
20,21
26,30
40,41
42,43
44,45
NO.
,23
,47
10
11
12
13
24
25
27
28
29
31
32
33
34
35
36
37
48
1
2
3
4
5
6
7
8
9
PIN
MODEOUT
RVAROUT
LVAROUT
VARDIFF
VOLUME
REFGND
RCLAMP
2.5VREF
LDOREF
VARMAX
LCLAMP
RPVDD
RPGND
LPGND
ROUT+
LPVDD
LOUT+
5VLDO
MODE
ROUT-
ANPEC Electronics Corp.
NAME
LOUT-
AGND
ROSC
COSC
VREF
AVDD
RBS+
LBS+
RBS-
RIN+
LBS-
LIN+
RIN-
LIN-
SD
I/O
I/O Left channel bootstrap power input for negative high-side MOSFET.
I/O Left channel bootstrap power input for positive high-side MOSFET.
I/O Voltage of ROSC pin equal 0.125V
I/O Charge/Discharge capacitor for generating triangle wave.
I/O Right channel bootstrap voltage input for positive high-side MOSFET.
I/O Right channel bootstrap voltage input for negative high-side MOSFET.
O
O
O
O
O
O
O
O
O
O
1
-
-
-
-
-
-
-
-
-
I
I
I
I
I
I
I
I
I
Shutdown mode control signal input. Pulling the voltage on SD below 0.8V makes the IC enter
low-power shutdown mode with 10 A (typical) I
Right channel negative input.
Right channel positive input.
2.5V reference for analog circuits.
Left channel positive input.
Left channel negative input.
5V reference output (5V LDO), connect it to VREF pin.
Gain control section’ s reference voltage input.
Input pin to set the difference in gain between the VAROUT and Class-D outputs by using the DC
voltage. Connect this pin to the ground or LDOREF when the VAROUT is not used.
Input pin to set the maximum gain of VAROUT by using the DC voltage. Connect this pin to
ground or LDOREF directly when the VAROUT is not used.
Input pin to set the gain of VAROUT and Class-D outputs by using the DC voltage.
Ground for gain control circuitry. Connect to AGND. If using a DAC to control the volume, connect
the DAC ground to this terminal.
Power supply for left channel H-bridge.
Class-D left channel negative output.
Power ground for left channel H-bridge.
Class-D left channel positive output.
Left channel internal voltage supply output for bootstrap capacitor.
Analog ground.
Internal 5V regulator output for external headphone driver used.
Left channel variable audio output, for external headphone driver.
Right channel variable audio output, for external headphone driver.
Analog power supply (8.5 to 14V).
Control pin for amplifier operation. A logic high places the amplifier in variable output mode, and
the Class-D output will disable; a logic low places the amplifier in variable output mode (line-level
output for external amplifier) and stereo Class-D outputs.
Inverse output of MODE pin, this pin can control the external headphone driver’ s (APA4801) mute
pin for changing operation from speaker operation to headphone operation. Leave this pin
unconnected when the external headphone driver is not in using.
Right channel internal voltage supply output for bootstrap capacitor.
Power supply for right channel H-bridge.
Class-D right channel positive output.
Power ground for right channel H-bridge.
Class-D right channel negative output.
13
DD
, current setting resistor for internal ramp generator.
FUNCTION
DD
.
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