SM8223A Datasheet, PDF (6/15 Pages) Nippon Precision Circuits Inc – FSK Decoder and DTMF Receiver IC

SM8223A
Timing Characteristics
Oscillator
V_DD = 3.0V ± 0.3V, GND = 0V, T_a = −20 to 85°C unless otherwise noted.
Parameter
Clock HIGH-level pulsewidth
Clock LOW -level pulsewidth
Clock rise time
Clock fall time
Symbol
t_{W H}
t_{W L}
t_r
t_f
Condition
Rating
Unit
min
typ
max
110
–
–
ns
110
–
–
ns
–
–
30
ns
–
–
30
ns
FSK decoder
V_DD = 3.0V ± 0.3V, GND = 0V, f_CLK = 3.579545MHz, T_a = −20 to 85°C unless otherwise noted.
Parameter
Power-down release time
Oscillator start-up time
Mark signal to DV ON time
FSK flag setup time
FSK flag hold time
Input to DOUT delay time
DOUT rise time
DOUT fall time
DOUT data rate
Symbol
t_{D P D}
t_{D O S C}
t_{D E D}
t_{A F}
t_{A H}
t_{A D D}
t_{D r 0}
t_{D f 0}
t_{D W L / H}
Condition
DV = LOW
Rating
Unit
min
typ
max
–
8
–
ms
–
5
–
ms
–
–
3.75
ms
–
–
833
(1/1.2kHz)
µs
–
–
10
ns
–
1
5
ms
–
–
20
ns
–
–
20
ns
1188
1200
1212
baud
DTMF receiver
V_DD = 3.0V ± 0.3V, GND = 0V, f_CLK = 3.579545MHz, T_a = −20 to 85°C unless otherwise noted.
Parameter
D O U T, DV rise time
D O U T, DV fall time
Signal detection time
Received signal non-detection time
Pause detection time
Pause non-detection time
DV output data delay time
Power-down release time
Oscillator start-up time
DOUT data rate
DTMF flag setup time
Symbol
t_{D r 0}
t_{D f 0}
t_{R E}
t_{R E}
t_PA
t_{P R}
t_{B D D}
t_{D P D}
t_{D O S C}
t_{D W L / H}
t_{A F}
Condition
DV
DV
DV
DV
Rating
Unit
min
typ
max
–
–
20
ns
–
–
20
ns
–
–
45
ms
20
–
–
ms
–
–
25
ms
20
–
–
ms
–
–
5
ms
–
8
–
ms
–
5
–
ms
1188
1200
1212
baud
–
–
833
(1/1.2kHz)
µs
NIPPON PRECISION CIRCUITS—6