SM8222A/B
AC Electrical Characteristics
FSK decoder
s SM8222A
VDD = 3.0 ± 0.3 V, GND = 0 V, fCLK = 3.579545 MHz, Ta = −20 to 85 °C
Parameter
Input sensitivity
Bandpass filter frequency response
(relative gain for 1700 Hz sine wave
input)
Carrier detect sensitivity
No-carrier detect sensitivity
Oscillator frequency
Symbol
Condition
CD ON
CD OFF
fCLK
60 Hz
1200 Hz
2200 Hz
4000 Hz
≥ 10,000 Hz
Rating
Unit
min
typ
max
–
−48
CDON
dBm
–
−80
–
–
−1
–
–
0
–
dB
–
−43
–
–
−54
–
–
−48
−44
dBm
−55
−51
–
dBm
−0.1%
3.579545
+0.1%
MHz
s SM8222B
VDD = 5.0 ± 0.5 V, GND = 0 V, fCLK = 3.579545 MHz, Ta = −20 to 85 °C
Parameter
Input sensitivity
Bandpass filter frequency response
(relative gain for 1700 Hz sine wave
input)
Carrier detect sensitivity
No-carrier detect sensitivity
Oscillator frequency
Symbol
Condition
CD ON
CDOFF
fCLK
60 Hz
1200 Hz
2200 Hz
4000 Hz
≥ 10,000 Hz
Rating
Unit
min
typ
max
–
−48
CDON
dBm
–
−80
–
–
−1
–
–
0
–
dB
–
−43
–
–
−54
–
–
−48
−44
dBm
−55
−51
–
dBm
−0.1%
3.579545
+0.1%
MHz
NIPPON PRECISION CIRCUITS—6