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MSM6946 Datasheet(PDF) 13 Page - OKI electronic componets

No. de pieza MSM6946
Descripción Electrónicos  300 bps Single Chip FSK MODEM
PDF  25 Pages
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Fabricante Electrónico  OKI [OKI electronic componets]
Página de inicio  http://www.oki.com
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MSM6946 Datasheet(HTML) 13 Page - OKI electronic componets

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¡ Semiconductor
MSM6926/6946
13/25
2. MSM6946
Transmit carrier out (AO)
Receive carrier input (AIN)
Receive Filter
Notes: *1 0 dBm = 0.775 Vrms
*2 The resistor values are typical
—
Parameter
Unit
Max.
Typ.
Min.
Symbol
Condition
ORIGINATE MODE
Carrier Frequency
Hz
1276
1270
1264
fOM
fCRYSTAL = 3.579545 MHz
(VA = 12 V ±10%, VD = 5 V ±5%, Ta = 0 to 70°C)
Mark
1
1076
1070
1064
fOS
Space
0
ANSWER MODE
Carrier Frequency
2231
2225
2219
fAM
Mark
1
2031
2025
2019
fAS
Space
0
Output Resistance
200
—
—
ROXA
W
—
Load Resistance
—
—
50
RLXA
k
W
—
Load Capacitance
100
—
—
CLXA
pF
—
Transmit Level
8
6
4
VOXA
*1 dBm
—
Output Offset Voltage
VA
2
VOSX
V
–1
VA
2
VA
2
+ 1
C1 = 0.047 mF
Out-of-Band Energy
(Referred to Carrier Level)
Refer to Fig. 4
EOX
dB
Parameter
Unit
Max.
Typ.
Min.
Symbol
Condition
Input Resistance
k
W
—
—
100
RIRA
—
Receive Signal Level Range
*1 dBm
–6
—
–48
VIRA
—
Carrier Detect Level
–43
—
—
VCD ON
R8 = 33 kW
R9 = 51 kW
—
—
–48
VCD OFF
ON
OFF
*2
Carrier Detect Hysteresis
dB
—
—
1.5
HYS
VCD ON – VCD OFF
Parameter
Unit
Max.
Typ.
Min.
Symbol
Condition
Group Delay Distortion
ms
—
650
—
DDL
ORIG.
MODE
—
750
—
ANS.
MODE
1975 to 2275 Hz
VAIN = –6 dBm
Adjacent Channel Rejection
LAC
—
—
50
dB
1020 to 1320 Hz



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