CF8224C 查看數據表（PDF） - Nippon Precision Circuits

零件编号

产品描述 (功能)

生产厂家

CF8224C

Dual-Tone Receiver IC

Nippon Precision Circuits  

BLOCK DIAGRAM

SM8224C

TIP

RING

TRQ

DT1

DT2

DTQ

AGND

Filter

Bias

Circuit

Crystal

Oscillator

Circuit

Filter

FSK

Demodulator

Carrier

Detector

Filter

(2130Hz)

Filter

(2750Hz)

Power-down

Circuit

Detector

Circuit

(2130Hz)

Level

Detector

Detector

Circuit

(2750Hz)

Level

Detector

Output

Circuit

DOUT

CDET

Time-constant

Circuit

STR

CR

DTDET

OSCIN OSCOUT

MODE S1 S0

VDD GND

SEIKO NPC CORPORATION —3

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