Tel:886-2-66296288
Fax:886-2-29174598
URL:http://www.princeton.com.tw
PT2332 PRE1.0 - 1 - September, 2006
2.2W×2 Class-D Audio Power Amplifier Preliminary PT2332
DESCRIPTION
The PT2332 is a CLASS-D power amplifier designed for audio equipments, maximum output power
can reach up to 2.2W x 2 (VDD = 5V, RL = 4Ω, THD = 10%). The PT2332 composed of exclusively
designed CLASS-D circuitry (patented) by PTC, along with the most advanced semi-conductor
technology. When compared to the traditional CLASS-AB amplifiers, the PT2332’s has a much higher
efficiency (> 80%), low heat dissipation, and produces superior audio quality. PT2332’s external
circuitry is simple and easily accessible, and consists of flawless self-protection capabilities. The
chip’s packaging is small, thus it occupies an insignificant amount of space on the circuit board;
therefore, making it the predominant choice when it comes to audio amplifiers.
FEATURES
• CMOS Technology
• Stereo differential analogue input
• Maximum output power 2.2W(4Ω) × 2 @ THD=10%
• Output low-pass LC filter is not necessary
• Preset 2 voltage gain selection (20dB and 26dB)
• Contains shutdown function
• POP noise free in shutdown changed and power ON/OFF period
• Built-in short circuit protection
• Built-in overheat protection
• Low harmonic distortion (0.1%), superior sound quality
• High efficiency (8Ω load > 85%), low heat dissipation
• SOP-16 pins and SSOP-16 pins, miniature packages
APPLICATIONS
• Portable Media Player
• Portable DVD Player
• LCD Monitor
• Small multimedia speakers
• Hand-free phone
• Laptop
• Other audio applications
Tel:886-2-66296288
Fax:886-2-29174598
URL:http://www.princeton.com.tw
PT2332 PRE1.0 - 2 - September, 2006
2.2W×2 Class-D Audio Power Amplifier Preliminary PT2332
PIN CONFIGURATION
161
INRN
INRP
VCC
GAIN
/SD
GND
INLN
INLP OUTLP
OUTLN
GNDL
GNDR
VDDL
VDDR
OUTRP
OUTRN
2
3
4
5
6
7
89
10
11
12
13
14
15
PIN DESCRIPTION
Pin I/O Symbol Function Pin I/O Symbol Function
1 I INRP Right channel input (+) 9 O OUTLP Left channel output (+)
2 I INRN Right channel input (-) 10 Power GNDL Ground (Left channel)
3 Power VCC Power input 11 Power VDDL Left channel power input
4 I GAIN Gain setting 12 O OUTLN Left channel output (-)
5 I /SD Shutdown 13 O OUTRN Right channel output (-)
6 Power GND Ground 14 Power VDDR Right channel power input
7 I INLN Left channel input (-) 15 Power GNDR Ground (Right channel)
8 I INLP Left channel input (+) 16 O OUTRP Right channel output (+)