PIN No.
Symbol
I/O
Description
4
VCC–
I
Negative Power Supply
5
2IN+
I
Non-Inverting Input Pin 2
6
2IN–
I
Inverting Input Pin 2
7
2OUT
O
Output 2
8
VCC+
I
Positive Power Supply
3.5.2 function introduction to PT2399
1. DESCRIPTION
PT2399 is an echo audio processor IC utilizing CMOS Technology which is equipped with ADC and DAC,
high sampling frequency and an internal memory of 44K digital processing is used to generate the delay time,
it also feature an internal VCO circuit in the system clock, thereby , making the frequency easily adjustable.
PT2399 boast of very low distortion (THD<0.5%) and very low noise (No<-90dBV), thus producing high
quality audio output .The pin assignments and application circuit are optimized for easy PCB layout and cost
saving advantage.
2. FEATURES
◆
CMOS Technology
◆
Least External component
◆
Auto Reset Function
◆
Low Noise, No<-90dBV Typical
◆
Low Distortion, THD<0.5% Typical
◆
External Adjustable VCO
◆
Available in 16 pins DIP or SOP package
3. PIN CONFIGURATION
PIN No.
Symbol
I/O
Description
1
VCC
I
Positive Power Supply
2
REF
I
Reference Power Supply
3
AGND
I
Simulative Ground
4
DGND
I
Digital Ground
5
CLK_O
O
NC
6
VCO
O
Voltage Controlled Oscillator
7
CC1
O
External capacitor
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