Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
DESCRIPTION
The PT2305 is an audio power amplifier utilizing CMOS Technology specially designed for audio
purpose. It can deliver 2.5W × 2 power output to the 4Ω load. The power consumption is very low in
stand-by. Total harmonic distortion is lower than 0.03%. The output structure is BTL (Bridge-Tied Load)
mode for driving speaker load mode. Built-in over-temperature protection, package size is not occupies
PCB space. It is suitable for small or portable products.
FEATURES
•
•
•
•
•
•
•
CMOS Technology
Operating voltage: 2.7V ~ 6V
Output power 2.5W × 2 (4Ω/10%THD)
Built-in 31 steps volume controller
Suppress the pop and click noise when mode changed
Extreme low current consumption in Shutdown mode (Icc<0.7µA)
Built-in over temperature protection
APPLICATIONS
•
•
•
•
LCD monitor or TV
Portable audio
Multimedia speakers
Other audio applications
PT2305 V1.0
-1-
September, 2004
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
PIN CONFIGURATION
Bypass
GND
-Out 1
VDD
+Out 1
GND
Shutdown
Mute
VDD
DC_Vol
1
2
3
4
5
6
7
8
9
10
20
19
18
17
GND
GND
-OUT 2
VDD
+Out 2
GND
Vo 2
Vin 2
Vin 1
Vo 1
PT2305
16
15
14
13
12
11
PT2305 V1.0
-2-
September, 2004
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
APPLICATION CIRCUIT
ORDER INFORMATION
Valid Part Number
PT2305
PT2305-S
PT2305-D
PT2305 (L)
PT2305-S (L)
PT2305-D (L)
Package
20 Pins, TSSOP, 173mil
20 Pins, SOP, 300mil
20 Pins, DIP, 300mil
20 Pins, TSSOP, 173mil
20 Pins, SOP, 300mil
20 Pins, DIP, 300mil
Top Code
PT2305
PT2305-S
PT2305-D
PT2305
PT2305-S
PT2305-D
Notes:
1. (L) = Lead Free
2. The Lead Free mark is put in front of the date code.
PT2305 V1.0
-3-
September, 2004
