PT2399 ECHO CIRCUIT

INTRODUCTION

In this Instructables I am going to create a circuit using PT2399 Integrated Circuit (IC). This circuit is used to create echo sound or voice in our audio signal. This circuit can repeat sound. We can also change the number of repeats by a potentiometer and we can further change the delay time between these repeats. The star of the project is PT2399 IC. So let's make this Circuit!

ELECTRONIC COMPONENTS

Resistors

Capacitors

Integrated Circuits(ICs)

Diodes

Printed Circuit Board (PCB)

Potentiometers

NECESSARY TOOOLS TO MAKE THE PCB

PT2399 IC 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 OF PT2399 IC

1. KARAOKE Mixer
2. CD/DVD Player/Recorder
3. Multimedia TV
4. Car Entertainment System
5. Music Instrument effecter
6. Electronics Toy

FEATURES OF PT2399 IC

1. CMOS technology
2. Least external components
3. Auto reset Function prevent POP noise
4. Low noise, SNR better than 90dB (typical)
5. Low distortion, THD= 0.5%(typical)
6. User adjustable VCO clock frequency.

PIN DESCRIPTION OF PT2399 IC

APPLICATIONS OF PT2399 CHIP