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參數(shù)資料
| 型號(hào)： | SM8223A |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | FSK Decoder and DTMF Receiver IC |
| 中文描述： | FSK信號(hào)解碼器和DTMF接收芯片 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大小： | 172K |
| 代理商： | SM8223A |
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 function
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.
1
FEATURES
I
Both FSK signal caller-ID information services
and DTMF signal caller-ID information services
supported
FSK decoder/DTMF receiver auto-select function
Ring (call signal) signal detection circuit built-in
Serial I/O
Input gain adjustment circuit built-in
Power-down mode
Single supply operation: 3.0V ± 10%
3.579545MHz external crystal oscillator fre-
quency
Molybdenum-gate CMOS process
I
I
I
I
I
I
I
I
APPLICATIONS
I
Telephones, fax machines and modems that sup-
port caller-ID information services
Adapters for caller-ID information service func-
tions
Telephones, fax machines and modems that sup-
port remote operation functions
I
I
ORDERING INFORMATION
PINOUT
(Top view)
PINOUT
(Unit:
μ
m)
1. Auto-select function operates if the FSK signal conforms to the Bellcore GR-30-CORE standard.
Device
Package
SM8223A
16-pin DIP
CF8223A
Chip
Pad size : 90
μ
m
×
90
μ
m
1
9
16
8
TIP
RING
GS
AGND
RDIN
RDRC
RDET
PDWN
VDD
DV
DOUT
FSK/DTMF
IC
OSCIN
OSCOUT
GND
S
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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