cf8223a Nippon Precision Circuits Inc, (NPC), cf8223a Datasheet - Page 13

• Manufacturer Part Number: cf8223a
• Description: Fsk Decoder And Dtmf Receiver Ic
• Manufacturer: Nippon Precision Circuits Inc, (NPC)

TYPICAL APPLICATION CIRCUIT
1. Refer to the Input Differential Amplifier.
2. Refer to the Ring Signal Detector.
Symbol
RING
X’tal
R
R
R
R
R
R
R
R
R
C
VS
D
C
C
C
D
C
TIP
1
2
3
4
5
6
7
8
9
4
1
1
2
3
2
5
1
1
1
1
1
2
2
2
2
2
VS
C3
C1
C1
C3
3.579545
1N4003
1N4004
Rating
53.6
60.4
240
464
430
270
270
470
0.1
0.1
34
22
27
22
–
R1
R1
R6
R6
D2
D2
D1
D1
D1
D1
R2
R2
D2
D2
R7
D1
R8
Unit
MHz
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
R4
nF
µF
nF
nF
µF
–
–
–
R9
C4
CF8223A
R5
C2
R3
TIP
RING
GS
AGND
RDIN
RDRC
RDET
PDWN
NIPPON PRECISION CIRCUITS INC.—13
OSCOUT
OSCIN
DOUT
DTMF
VDD
GND
FSK/
DV
IC
C5
X'tal