W91031 Datasheet, PDF (17/29 Pages) Winbond – LOW POWER CMOS INTERGRATED CIRCUIT

Preliminary W91031
FSK Detection
PARAMETER
Input Frequency Detection
Bell 202 Mark (logic 1)
Bell 202 Space (logic 0)
CCITT V.23 Mark (logic 1)
CCITT V.23 Space (logic 0)
Maximum Input Signal Level
Input Sensitivity
Transmission Rate
Input Noise Tolerance
SYMBOL MIN. TYP. MAX.
FMARK
FSPACE
FMARK
FSPACE
1188
2178
1280.5
2068.5
SNRFSK
-43
1188
20
1200
2200
1300
2100
-45
1200
1212
2222
1319.5
2131.5
-5.78
1212
Notes:
1: Both mark and space have the same amplitude and are at the nominal frequencies.
2: These characteristics are fort VDD = 5V and temperature = 25° C.
3: Band limited random noise 300 - 3400 Hz. Present only when the FSK signal is present.
UNITS
Hz
dBm
dBm
baud
dB
NOTES
+/-1%
+/-1%
+/-1.5%
+/-1.5%
1, 2
1, 2, 3
AC Timing Characteristics
(AC timing characteristics supersede the recommended operating conditions unless otherwise stated.)
System
PARAMETER
Wake-up Time
Sleep-down Time
SYMBOL
tWAKE
tSLP
CONDITION
SLEEP
OSCO
MIN.
TYP.*
MAX.
50
1
UNITS NOTES
mS
mS
Note: " * " typical figures are for VDD = 5V and temperature = 25° C are design aids only, not guaranteed and not subject to
production testing.
Dual Tone Alert Signal Detection
PARAMETER
SYMBOL CONDITION MIN. TYP.* MAX. UNITS NOTES
Alert Detection Enable Time
tALTE FSKE (low)
25
mS
Alert Signal Present Detect Time
tDP
ALGR
0.5
10
mS
Alert Signal Absent Detect Time
tDA
0.1
8
mS
Note: " * " typical figure are at VDD = 5V and temperature = 25° C are design aids only, not guaranteed and not subject to
production testing.
FSK Detection
PARAMETER
FSK Detection Enable Time
Input FSK to FCDN Low Delay
SYMBOL
tFSKE
tCP
CONDITION
FSKE (high)
MIN.
TYP.*
MAX.
25
25
UNITS
mS
mS
NOTES
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Publication Release Date: August 2000
Revision A1