SM8222A/B
Dual tone detector
s SM8222A
VDD = 3.0 ± 0.3 V, GND = 0 V, fCLK = 3.579545 MHz, Ta = −20 to 85 °C
Parameter
Low tone frequency
High tone frequency
Detection frequency deviation
No-detection frequency deviation
Detection sensitivity
No-detection sensitivity
Signal level difference
Symbol
fL
fH
Condition
Rating
Unit
min
typ
max
–
2130
–
Hz
–
2750
–
Hz
1.1
–
–
%
3.5
–
–
%
−37.78
–
–
dBm
–
–
−43.78
dBm
–
–
6
dB
s SM8222B
VDD = 5.0 ± 0.5 V, GND = 0 V, fCLK = 3.579545 MHz, Ta = −20 to 85 °C
Parameter
Low tone frequency
High tone frequency
Detection frequency deviation
No-detection frequency deviation
Detection sensitivity
No-detection sensitivity
Signal level difference
Symbol
fL
fH
Condition
Rating
Unit
min
typ
max
–
2130
–
Hz
–
2750
–
Hz
1.1
–
–
%
3.5
–
–
%
−37.78
–
–
dBm
–
–
−43.78
dBm
–
–
6
dB
NIPPON PRECISION CIRCUITS—7