SM8223A 데이터 시트보기 (PDF) - Nippon Precision Circuits

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SM8223A

FSK Decoder and DTMF Receiver IC

Nippon Precision Circuits  

SM8223A

AC Electrical Characteristics

FSK decoder

VDD = 3.0V ± 0.3V, GND = 0V, fCLK = 3.579545MHz, Ta = −20 to 85°C unless otherwise noted.

Parameter

Detection sensitivity

Noise reduction ratio

Symbol

Condition

Rating

Unit

min

typ

max

Typical application circuit

−4 0

−3 7 . 5

0

dBm

M a r k signal and SPA CE

signal are same level.

Noise: Random noise from

20

–

200Hz to 3400Hz.

–

dB

DTMF receiver

VDD = 3.0V ± 0.3V, GND = 0V, fCLK = 3.579545MHz, Ta = −20 to 85°C unless otherwise noted.

Parameter

Detection frequency deviation

Non-detection frequency deviation

Detection sensitivity

Non-detection sensitivity

Signal level error

High-frequency rejection ratio

Noise rejection ratio

Dial tone rejection ratio

1. Input signal is up to V D D level.

Symbol

Condition

Rating

Unit

min

typ

max

±1.5% ± 2

–

–

Hz

±3.5

–

Typical application circuit

−3 2 . 0

–

–

%

0.0

dBm

–

–

−5 0 . 0

dBm

–

–

6

dB

–

18

–

dB

Typical application circuit1

–

12

–

dB

–

20

–

dB

Input-stage amplifier Characteristics

VDD = 3.0V ± 0.3V, GND = 0V, fCLK = 3.579545MHz, Ta = −20 to 85°C unless otherwise noted.

Parameter

Input leakage current

Input resistance

DC open-loop voltage gain

Unity gain frequency

Load capacitance

Load resistance

Symbol

IIN

R IN

AVOL

fC

CL

RL

Condition

Rating

Unit

min

typ

max

–

–

1

µA

–

1

–

MΩ

30

–

–

dB

80

–

–

kHz

–

–

100

pF

50

–

–

kΩ

NIPPON PRECISION CIRCUITS—5

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