PTC AV100 Service Manual PT2399
Tel : 886-2-29162151
Princeton Technology Corp.
URL: http://www.princeton.com.tw
Fax: 886-2-29174598
Echo Processor IC PT2399
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 features 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.
FEATURES
❒ CMOS Technology
❒ Least External Components
❒ Auto Reset Function
❒ Low Noise, No<-90dBV Typical
❒ Low Distortion, THD<0.5% Typical
❒ External Adjustable VCO
❒ Available in 16 pins, DIP or SO package
APPLICATIONS
❒ Video Tape Recorder
❒ Video Compact Disk
❒ Television
❒ CD Player
❒ Car Stereo
❒ KARAOKE Mixer
❒ Electronic Musical Instrument
❒ Audio Equipment with Echo Processor
PT2399 v1.2 1 Updated September 2000
Tel : 886-2-29162151
Princeton Technology Corp.
URL: http://www.princeton.com.tw
Fax: 886-2-29174598
Echo Processor IC PT2399
BLOCK DIAGRAM
L P F 1 -IN L P F 1 -O U T L P F 2 -O U T
16 1 5 14 1 3 1 2 11 1 0 9 8 7
_
+
LPF1
1/2 Vcc
1 2 1 2 3 4 5 6
VC C RE F
COMP
AUTO
RESET
__
++
I
D
M O MI CLOCK
44K Bits
R AM
LPF 2 -IN OP 2-O UT OP 2-IN OP1 -IN O P1 -O U T CC 0 CC 1
4.7K 4.7K
MOD
D O0 DO 1
VCO
LPF2
_
+
_
+
AG N D D GN D C L K _ O VC O
DEM
PIN CONFIGURATION
VCC
REF
AGND
DGND
CLK_O
VCO
CC1
CC0
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LPF1-IN
LPF1-OUT
LPF2-OUT
LPF2-IN
OP2-0UT
OP2-IN
OP1-IN
OP1-OUT
PT2399
PT2399 v1.2 2 Updated September 2000
Tel : 886-2-29162151
Princeton Technology Corp.
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Echo Processor IC PT2399
PIN DESCRIPTION
emaNniPO/InoitpircseD.oNniP
CCV- tupnIehatloVylppuSgolanA1
FER- )ccV2/1=(egatloVecnerefeRgolanA2
DNGA- dnuorGgolanA3
DNGD- dnuorGlatigiD4
O_KLCO niPtuptuOkcolCmetsyS5
OCVI niPtnemtsujdAycneuqerF6
1CC- 1lortnoCtnerruC7
0CC- 0lornoCtnerruC8
tuptuO1reifilpmAPO
TUO-1POO
tupnI1reifilpmAPO
NI-1POI
tupnI2reifilpmAPO
NI-2POI
tuptuO2reifilpmAPO
TUO-2POO
NI-2FPLI niPtupnI2retliFssaPwoL31
TUO-2FPLO niPtuptuO2retliFssaPwoL41
TUO-1FPLO niPtuptuO1retliFssaPwoL51
NI-1FPLI niPtupnI1retliFssaPwoL61
detaludooMsadesuebnacnipsihT
.roticapaCgnitcennocybrotargetnI
detaludomeDsadesuebnacnipsihT
.roticapaCgnitcennocybrotargetnI
detaludomeDsadesuebnacnipsihT
.roticapaCgnitcennocybrotargetnI
detaludoMasadesuebnacnipsihT
roticapaCgnitcennocybrotargetnI
9
01
11
21
PT2399 v1.2 3 Updated September 2000
Tel : 886-2-29162151
Princeton Technology Corp.
URL: http://www.princeton.com.tw
Fax: 886-2-29174598
Echo Processor IC PT2399
FUNCTIONAL DESCRIPTION
Echo Mode
Please refer to the diagram below:
Vout
Vin
+
Low Pass
Filter
A/D
Delay Time
Circuit
Auto Reset Function
The waveform of the signal during Power On is given below:
Power ON
D/A
Low Pass
Filter
Re set Tim e = 40 0 m s
PT2399 v1.2 4 Updated September 2000
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