SM8222 Nippon Precision Circuits Inc, SM8222 Datasheet - Page 2

• Manufacturer Part Number: SM8222
• Description: Caller ID Service IC with Call Waiting
• Manufacturer: Nippon Precision Circuits Inc

PACKAGE DIMENSIONS
(Unit: mm)
BLOCK DIAGRAM
24-pin SOP
1.27
15.24
AGND
0.45 0.10
RING
0.25
0.20
CAP
TIP
GS
OSCIN OSCOUT RDIN
0.10
0.13
Generator
Oscillator
M
Bias
Amplifier
Filter
0.50 0.20
RDRC
Filter
(2130Hz)
(2750Hz)
Filter
Filter
SM8222A/B
RDET
Demodulator
Detector
Carrier
24-pin DIP
FSK
(2130Hz)
(2750Hz)
Detector
Detector
Detector
Detector
Data
Level
Data
Level
FSKEN
30.20
2.54
1.50
PDWN
Data Timing
0.20
0.30
0.50
0
MODE
Control
Guard Time
Generator
Interrupt
NIPPON PRECISION CIRCUITS—2
Control
VDD
0.45 0.08
GND
DOUT
DCLK
DR
CDET
INT
STD
STGT
EST