SM8223A Datasheet, PDF (2/15 Pages) Nippon Precision Circuits Inc – FSK Decoder and DTMF Receiver IC

PACKAGE DIMENSIONS
(Unit: mm)
SM8223A
19.05
2.54
0.46
1.52
BLOCK DIAGRAM
Differential
Amplifier
TIP
RING
GS
FSK/DTMF
FSK Decoder
Band Pass
Filter
FSK
Decoder
Logic
FSK/DTMF
Discriminator
Logic
AGND
Bias
Circuit
Dial Tone
Filter
High Group
Filter
Low Group
Filter
DTMF Receiver
DTMF
Decoder
Logic
OSC
Ring Detect
DV
DOUT
VDD GND PDWN OSCIN OSCOUT
RDIN
RDRC RDET
NIPPON PRECISION CIRCUITS—2