Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.2W×2 Class-D Audio Power Amp.
with Headphone Output
Preliminary
PT2001
DESCRIPTION
The PT2001 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 PT2001 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 PT2001’s has a much higher efficiency (>85%),
low heat dissipation, and produces superior audio quality. PT2001’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
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CMOS technology
Stereo, differential input for improved CMRR.
Maximum output power 2.2W (4Ω) x 2 @ THD=10%
Operating on Both BTL (Bridged Tight Loaded) and SE (Single Ended) configuration
No LC filter needed when driving speakers in BTL configuration.
Driving 32Ω headphone on SE configuration.
Highly Improved PSRR (>70dB) for powered from noisy PC-BUS power.
Automatic gain-reduced during headphone attached to the amplifier.
Shutdown function
POP noiseless in shutdown and power ON/OFF period
Built-in short circuit protection
Built-in overheat protection
High efficiency (8Ω load>85%), low heat dissipation
TSSOP 20 pins miniature packages for saving PCB size.
APPLICATIONS
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Portable media player
Portable DVD player
LCD monitor
Small multimedia speakers
Hand-free phone
Laptop
Other audio applications
PT2001 PRE1.0
-1-
October , 2007
PTC [ PRINCETON TECHNOLOGY CORP ]
