PT2369
4 Inputs, 2.6Wx2 Class-AB Audio
Amplifier with I
2
C Volume
DESCRIPTION
The PT2369 is an audio amplifier design for the low
voltage (5V) application purpose, built-in stereo 2.6W
Class-AB power amplifier with 32 steps I
2
C controlled
volume, it also provides 4 sources selector, and
unique noise suppressor circuit eliminates unpleasant
pop noise during power or shutdown on/off, and
provides SE/BTL selection for headphone connection.
FEATURES
Supply voltage: 3~6V
4 Stereo inputs
32 steps, I
2
C controlled volume from -40dB to
+26dB (BTL)
2.6W x 2 Class-AB Power Amplifier (VDD=5V,
RL=4Ω, THD=10%)
BTL and SE output selectable
Pop-Free circuitry eliminates unpleasant noises
during power ON/OFF and changing the input
source.
Low power shutdown
Over Temperature Protection
Over Current Protection
TSSOP 24 pin package with thermal pad
APPLICATIONS
Portable DVD player
Portable audio system
Docking speaker system
Flat panel monitor
Other audio applications
BLOCK DIAGRAM
Tel: 886-66296288
‧
Fax: 886-29174598
‧
http://www.princeton.com.tw
‧
2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PT2369
APPLICATION CIRCUIT
ORDER INFORMATION
Part Number
PT2369-HT
Package Type
24 pins, HTSSOP, 173mil
Top Code
PT2369-HT
V1.2
2
January 2016
PT2369
PIN CONFIGURATION
PIN DESCRIPTION
Pin Name
IN4L
IN3L
IN2L
IN1L
AVDD
BYPASS
AGND
MUTE
IN1R
IN2R
IN3R
IN4R
SDA
SCL
RVDD
ROUT-
RGND
ROUT+
LOUT+
LGND
LOUT-
LVDD
SD
SE/BTL
I/O
I
I
I
I
P
I
P
I
I
I
I
I
I
I
I
O
P
O
O
P
O
P
I
I
Description
Left channel positive input 4
Left channel positive input 3
Left channel positive input 2
Left channel positive input 1
Power input for volume control
Internal 1/2 reference bypassing
Ground for volume control
Mute Input, H=muted, L=normal (internal pull down)
Right channel positive input 1
Right channel positive input 2
Right channel positive input 3
Right channel positive input 4
I2C data input
I2C clock input
Right channel power input
Right channel negative output
Power GND
Right channel positive output
Left channel positive output
Power GND
Left channel negative output
Left channel power input
Shutdown, L=shutdown, H=normal operate.
L=BTL (speaker out), H=SE (Headphone out)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
V1.2
3
January 2016
PT2369
IMPORTANT NOTICE
Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and to discontinue any product without notice at any time.
PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No
circuit patent licenses are implied.
Princeton Technology Corp.
2F, 233-1, Baociao Road,
Sindian, Taipei 23145, Taiwan
Tel: 886-2-66296288
Fax: 886-2-29174598
http://www.princeton.com.tw
V1.2
13
January 2016
stm32/stm8
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