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FX614 Datasheet(PDF) 14 Page - CML Microcircuits

Part # FX614
Description  Optional Line Equalisation
PDF  17 Pages
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Manufacturer  CMLMICRO [CML Microcircuits]
Direct Link  http://www.cmlmicro.com
Logo CMLMICRO - CML Microcircuits

FX614 Datasheet(HTML) 14 Page - CML Microcircuits

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Bell 202 Compatible Modem
FX614
© 1997 Consumer Microcircuits Limited
14
D/614/4
Operating Characteristics
For the following conditions unless otherwise specified:
VDD = 3.0V at Tamb = 25°C and VDD = 3.3V to 5.5V at Tamb = -40 to +85°C,
Xtal Frequency = 3.579545MHz
± 0.1%
0dBV corresponds to 1.0Vrms
0dBm corresponds to 775mVrms into 600
Ω.
Notes
Min.
Typ.
Max.
Units
DC Parameters
I
DD (M0 = '1', M1 = '1')
1, 2
-
1.0
-
µA
I
DD (M0 or M1 = '0') at VDD = 3.0V
1
-
1.0
1.25
mA
I
DD (M0 or M1 = '0') at VDD= 5.0V
1
-
1.7
2.5
mA
Logic '1' Input Level
70%
-
-
VDD
Logic '0' Input Level
-
-
30%
VDD
Logic Input Leakage Current (Vin = 0 to V
DD),
Excluding XTAL/CLOCK Input
-1.0
-
+1.0
µA
Output Logic '1' Level (lOH = 360µA)
VDD-0.4
-
-
V
Output Logic '0' Level (lOL = 360µA)
-
-
0.4
V
RDYN O/P 'off' State Current (Vout = VDD)
-
-
1.0
µA
FSK Demodulator
Bit Rate
0
1200
1212
Baud
Mark (Logical '1') Frequency
1188
1200
1212
Hz
Space (Logical '0') Frequency
2178
2200
2222
Hz
Valid Input Level Range
3
-40.0
-
-8.0
dBV
Maximum Twist (Mark Level wrt Space Level)
±6.0
-
-
dB
Acceptable Signal to Noise Ratio
4
20.0
-
-
dB
Level Detector 'On' Threshold Level
3
-
-
-40.0
dBV
Level Detector 'Off' to 'On' Time (Figure 4 Teon)
-
-
25.0
ms
Level Detector 'On' to 'Off' Time (Figure 4 Teoff)
8.0
-
-
ms
FSK Retiming
Acceptable Rx Data Rate
1188
1200
1212
Baud
Tx Data Rate
1194
-
1206
Baud
FSK Modulator
TXOP Level
5
-1.0
0
+1.0
dB
Twist (Mark Level wrt Space Level)
-2.0
0
+2.0
dB
Tx 1200bits/sec (M1 = '0', M0 = '1').
Bit Rate
0
1200
1212
Baud
Mark (Logical '1') Frequency
1197
-
1203
Hz
Space (Logical '0') Frequency
2196
-
2204
Hz
Tx 150bits/sec (M1 = '0', M0 = '0')
Bit Rate
0
150
152
Baud
Mark (Logical '1') Frequency
385
-
389
Hz
Mark (Logical '0') Frequency
485
-
489
Hz



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