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SM8223A Arkusz danych(PDF) 1 Page - Nippon Precision Circuits Inc

Numer części SM8223A
Szczegółowy opis  FSK Decoder and DTMF Receiver IC
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Producent  NPC [Nippon Precision Circuits Inc]
Strona internetowa  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM8223A Arkusz danych(HTML) 1 Page - Nippon Precision Circuits Inc

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SM8223A
NIPPON PRECISION CIRCUITS—1
NIPPON PRECISION CIRCUITS INC.
FSK Decoder and DTMF Receiver IC
OVERVIEW
The SM8223A is a FSK (Frequency shift keying) decoder and DTMF (Dual tone multi-frequency) receiver IC.
It is fabricated using a CMOS process and features a power-down function for low power dissipation opera-
tion. The FSK decoder and DTMF receiver have the same performance characteristics as dedicated ICs that
perform the same functions, with the added benefit of an FSK decoder/DTMF receiver auto-select function1
using the telephone tip/ring input signal. It also features a ring (call signal) signal detection circuit, making for
easy construction of low power dissipation, high-performance analog telephone-related applications.
FEATURES
s
Both FSK signal caller-ID information services
and DTMF signal caller-ID information services
supported
s
FSK decoder/DTMF receiver auto-select function
s
Ring (call signal) signal detection circuit built-in
s
Serial I/O
s
Input gain adjustment circuit built-in
s
Power-down mode
s
Single supply operation: 3.0V ± 10%
s
3.579545MHz external crystal oscillator fre-
quency
s
Molybdenum-gate CMOS process
APPLICATIONS
s
Telephones, fax machines and modems that sup-
port caller-ID information services
s
Adapters for caller-ID information service func-
tions
s
Telephones, fax machines and modems that sup-
port remote operation functions
ORDERING INFORMATION
PINOUT
(Top view)
PINOUT
(Unit:
µm)
1. Auto-select function operates if the FSK signal conforms to the Bellcore GR-30-CORE standard.
D e vice
P a ck ag e
SM8223A
16-pin DIP
CF8223A
Chip
P ad size : 90
µm × 90µm
1
9
16
8
TIP
RING
GS
AGND
RDIN
RDRC
VDD
DOUT
FSK/DTMF
IC
OSCIN
DV
RDET
PDWN
OSCOUT
GND
GS
(0, 0)
(2810, 3160)
DOUT
RDET
AGND
RDIN
RDRC
PDWN
GND OSCOUT
FSK/DTMF
IC
OSCIN
RING
TIP
VDD
DV


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