SM8222AS datasheet(6/15 Pages) NPC

6 / 15 page

SM8222A/B

NIPPON PRECISION CIRCUITS—6

AC Electrical Characteristics

FSK decoder

SM8222A

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

SM8222B

VDD = 5.0 ± 0.5 V, GND = 0 V, fCLK = 3.579545 MHz, Ta = −20 to 85 °C

P arameter

Symbol

Condition

Rating

Unit

min

typ

m a x

Input sensitivity

–

−48

CDON

dBm

Bandpass ﬁlter frequency response

(relative gain for 1700 Hz sine wave

input)

60 Hz

–

−80

–

1200 Hz

–

−1–

2200 Hz

–

4000 Hz

–

−43

–

≥ 10,000 Hz

–

−54

–

Carrier detect sensitivity

CDON

–

−48

−44

dBm

No-carrier detect sensitivity

CDOFF

−55

−51

–

dBm

Oscillator frequency

fCLK

−0.1%

3.579545

+0.1%

MHz

P arameter

Symbol

Condition

Rating

Unit

min

typ

m a x

Input sensitivity

–

−48

CDON

dBm

Bandpass ﬁlter frequency response

(relative gain for 1700 Hz sine wave

input)

60 Hz

–

−80

–

1200 Hz

–

−1–

2200 Hz

–

4000 Hz

–

−43

–

≥ 10,000 Hz

–

−54

–

Carrier detect sensitivity

CDON

–

−48

−44

dBm

No-carrier detect sensitivity

CDOFF

−55

−51

–

dBm

Oscillator frequency

fCLK

−0.1%

3.579545

+0.1%

MHz

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