AA4002 Datasheet, PDF (4/22 Pages) BCD Semiconductor Manufacturing Limited – STEREO 2W AUDIO POWER AMPLIFIER

STEREO 2W AUDIO POWER AMPLIFIER
Functional Block Diagram
Data Sheet
AA4002
Mute ⁵
Mode ⁴
HP Sense ²¹
7
DC VOL
GAIN SELECT LEFT DOCK LEFT GAIN 1
3
13
19
Mode Control
10kΩ
12
LEFT IN
BEEP IN ¹¹ Beep Detect
10
RIGHT IN
_
+
Bias
+
_
SHUTDOWN ²
V_DD
GND
6, 16, 27
1, 8, 14, 20, 23
Power
Management
Bypass ²²
Click and Pop
Suppression
Circuitry
Volume
Bias
Control
31 Steps
10kΩ
9
24
RIGHT DOCK RIGHT GAIN 1
LEFT GAIN 2
18
10kΩ
_
+
20kΩ
20kΩ
_
+
17
LEFT OUT-
15
LEFT OUT+
+
28
RIGHT OUT+
_
20kΩ
+
_
20kΩ
26
RIGHT OUT-
10kΩ
25
RIGHT GAIN 2
Figure 3. Functional Block Diagram of AA4002
Sep. 2006 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
4