PT2399 CMOS Echo / Delay Audio Processor
Single-chip CMOS echo and audio delay processor utilizing internal 44Kbit digital RAM with integrated ADC, DAC, and operational amplifiers. Widely used in guitar pedals, synthesizers, and karaoke equipment.
Aliase:PT2399, Echo Processor, Delay IC, Audio Delay, Guitar Delay
DIP-16 Top View
16 Pins
Pinout Table16
| Pin | Signal / Name | Type | Alternative Functions |
|---|---|---|---|
| 1 | VCC | Power | Digital & Analog Power Supply (+5V) |
| 2 | REF | Analog | Analog Reference Voltage (VCC/2, approx 2.5V) |
| 3 | AGND | Ground | Analog Ground (0V) |
| 4 | DGND | Ground | Digital Ground (0V) |
| 5 | CLK_O | Digital | System Clock Output (Internal VCO Frequency) |
| 6 | VCO | Analog | VCO Frequency / Delay Time Control (Resistor to GND) |
| 7 | CC1 | Analog | Current Control / Integrator Filter 1 |
| 8 | CC0 | Analog | Current Control / Integrator Filter 0 |
| 9 | OP1_OUT | Analog | Operational Amplifier 1 Output (Low Pass Filter 1 Output) |
| 10 | OP1_IN | Analog | Operational Amplifier 1 Inverting Input |
| 11 | OP2_IN | Analog | Operational Amplifier 2 Inverting Input |
| 12 | OP2_OUT | Analog | Operational Amplifier 2 Output |
| 13 | LPF2_IN | Analog | Low Pass Filter 2 Input (Demodulator Output) |
| 14 | LPF2_OUT | Analog | Low Pass Filter 2 Output |
| 15 | LPF1_OUT | Analog | Low Pass Filter 1 Output |
| 16 | LPF1_IN | Analog | Low Pass Filter 1 Input |