Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2W × 2 Class AB Audio Power Amplifier
PT2303
PIN CONFIGURATION
Shutdown
GND
Shutdown
GND
16
15
14
13
12
11
10
9
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
HP-IN
GND
+OUT2
VDD
1
HP-IN
GND
+OUT2
VDD
-OUT2
-IN2
2
+OUT1
VDD
+OUT1
VDD
3
4
PT2303
-OUT1
-IN1
-OUT1
-IN1
5
-OUT2
-IN2
PT2303
6
GND
GND
Vref
7
Vref
+IN1
+IN1
+IN2
NC
+IN2
8
NC
9
NC
10
NC
PIN DESCRIPTION
Pin No.
Pin Name I/O
Description
16 Pins
20 Pins
Shutdown pin。Entire IC into the shutdown mode
when this pin connected to the Vcc.
Shutdown
I
1
1
GND
+OUT1
VDD
- Ground
O Channel 1 output (+)
2
3
4
2
3
4
-
Supply voltage input
-OUT1
-IN1
GND
+IN1
+IN2
Vref
-IN2
-OUT2
VDD
+OUT2
GND
O Channel 1 output (-)
5
6
7
8
5
6
7
8
13
14
15
16
17
18
19
I
-
I
I
I
I
Channel 1 input (-)
Ground
Channel 1 input (+)
Channel 2 input (+)
Bias reference bypassing
Channel 2 input (-)
9
10
11
12
13
14
15
O Channel 2 output (-)
- Supply voltage input
O Channel 2 output (+)
-
Ground
Output mode select, connected to the VDD for SE
mode or GND for BTL mode
No Connect
HP-IN
NC
I
16
-
20
-
9 ~ 12
PT2303 V1.2
- 3 -
December, 2007
PTC [ PRINCETON TECHNOLOGY CORP ]
