DESCRIPTION
The PT2399 is a single chip echo processor IC utilizing
CMOS technology. Which accept analog audio input
signal, a high sample rate ADC transfer the analog
signal into a bit stream then storage to internal 44Kbit
RAM, after processing the bit stream will de-modulate
by DAC and lowpass filter. Overall delay time is
determined by internal VCO clock frequency, and user
can easy to change the VCO frequency by changing
the external resistance. The PT2399 performs low
distortion (THD<0.5%@0.5Vrms) and low noise
(No<-90dBV) characteristic for audio purpose, and pin
arrangement and application circuit are optimized for
easy PCB layout and cost saving advantage.
APPLICATIONS
• KARAOKE Mixer
• CD/DVD Player/Recorder
• Multimedia TV
• Car Entertainment System
• Music Instrument effecter
• Electronics Toy
BLOCK DIAGRAM
PT2399
Echo Processor IC
FEATURES
• CMOS technology
• Least external components
• Auto reset Function prevent POP noise
• Low noise, SNR better than 90dB (typical)
• Low distortion, THD= 0.5%(typical)
• User adjustable VCO clock frequency.
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan