PT2390 - Princeton Technology Corp

PT2390 Echo IC with Built-in Microphone Amplifier & Output Mixer

PT2390 is a digital echo IC utilizing CMOS Technology. Microphone Amplifier, Output Mixer, internal 44K RAM and Vocal Switch are all integrated in a single chip to provide a digital echo IC of the the highest standard. Very low distortion and high S/N Ratio qualities, not to mention the built-in VCO feature which eliminates the need for an external crystal o.

Features

of PT2390. Pin assignments and application circuit are optimized for easy PCB Layout and low cost effectiveness. FEATURES
• CMOS Technology
• Least External Component
• 5V Power Supply
• 2 Microphone Amplifier and KARAOKE Automatic Vocal Changer
• Built-in 44K RAM
• Built-in VCO, eliminating the need for a crystal oscillator
• Low Total Harmonic Distortion : Microphone Pre-Amplifier <0.09% (typ.) : Echo Processor < 0.5% (typ.)
• High S/N Ratio : Microphone Pre-Amplifier > 85 (no - weighting) : Echo Processor > 80 dB (no - weighting)
• Available in 28-pin, DIP or SO Package APPLICATIONS
• DVD.