Unclassified PT2399 is a digital delay echo audio processor. This article mainly covers pinout, datasheet, applications, circuit, and other details about PT2399 delay. Furthermore, there is a huge range of semiconductors, capacitors, resistors, and ICs in stock. Welcome your RFQ!
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Oct 9, 2021
Pearl Christy
PT2399 Delay Pedals - How do they work?
Unclassified
PT2399 is a digital delay echo audio processor. This article mainly covers pinout, datasheet, applications, circuit, and other details about PT2399 delay. Furthermore, there is a huge range of semiconductors, capacitors, resistors, and ICs in stock. Welcome your RFQ!
PT2399
The PT2399 is a CMOS single-chip echo processor IC. A high sample rate ADC converts the analog data into a bitstream, which is then stored in internal 44Kbit RAM. After processing, the bitstream is de-modulated by DAC and lowpass filter. The internal VCO clock frequency determines the overall delay duration, and the user can easily modify the VCO frequency by changing the external resistance.
| Pin Number | Pin Name | Description |
| 1 | VCC | Supply Voltage Input |
| 2 | REF | Analog Reference Voltage Input |
| 3,4 | AGND, DGND | Analog Ground and Digital Ground |
| 5 | CLK_O | Clock Signal Output |
| 6 | VCO | Frequency adjust input pin |
| 7,8 | CC1,CC0 | Current control 1 and Current control 0 |
| 9,10 | OP1-OUT, OP1-IN | 1st Op-amp Output and input pin |
| 11,12 | OP2-IN, OP2-OUT | 2nd Op-amp Input and Output pin |
| 13,14 | LPF2-IN, LPF2-OUT | 2nd Low pass filter input and output pin |
| 15,16 | LPF1-OUT, LPF-IN | 1st Low pass filter output and input pin |
PT2399 Symbol
PT2399 Footprint
PT2399 3D Model
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
KARAOKE Mixer
CD/DVD Player/Recorder
Multimedia TV
Car Entertainment System
Music Instrument effecter
Electronics Toy
The Delay/Echo circuit described in the datasheet is the most common use for the PT2399; these fundamental circuits are quite similar and serve as the foundations for many additional guitar pedals:
Echo
Delay
PT2399 Input Stage
Three op-amps make up the Input Stage. The designer cannot use two of them (2 and 3) because they are always employed as part of the Sigma-Delta ADC circuit. The first op-amp can be used in a variety of ways, but the most typical application is as a filter/adder in a Multi-Feedback topology:
PT2399 Input
PT2399 Output Stage
Two op-amps make up the output stage. The first has limited usefulness and is used after the Demodulator as a low pass filter (Anti-Aliasing Filter). The second op-amp is unrestricted and is typically used in a Multi-Feedback op-amp filter.
PT2399 Output
PTC (Princeton Tech) was established in 1986 and was initially deeply involved in the consumer IC field. It has become a leading manufacturer of consumer IC design in Taiwan. Since then, it has entered the automotive IC market and obtained certification and adoption by many well-known manufacturers in the world, which proves that the superior quality of PTC(Princeton Tech) products has been deeply recognized and trusted by customers. PTC(Princeton Tech) has developed mass-produced products, including various display driver ICs, multimedia voice ICs, motor driver ICs, radio frequency ICs, codec ICs, remote control ICs and customized ICs, etc.
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