CF8223A 查看數據表（PDF） - Nippon Precision Circuits

零件编号

产品描述 (功能)

比赛名单

CF8223A

FSK Decoder and DTMF Receiver IC

Nippon Precision Circuits  

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

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