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MSM7512BRS Просмотр технического описания (PDF) - Oki Electric Industry
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Компоненты Описание
Список матч
MSM7512BRS
1200 bps Half Duplex FSK Modem – ITU-T V.23
Oki Electric Industry
MSM7512BRS Datasheet PDF : 12 Pages
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Semiconductor
MSM7512B
AC Characteristics
Modulator/analog output (AO) characteristics
(V
DD
= +2.7 V to +5.5 V, Top = –40°C to +85°C)
Parameter
Symbol
Condition
Min. Typ. Max. Unit
FSK Transmit
f
DM
XD = "1"
1200 bps Transmit Mode
f
DS
XD = "0"
Signal Frequency
f
BM
75 bps Transmit Mode
XD = "1"
f
BS
XD = "0"
FSK Transmit Signal
V
AO1
Answer Tone amplitude V
AO2
AOG = "0"
V
O
AOG = "1"
Analog External
V
EA1
Input Signal Gain
V
EA2
V
AO
– V
EAI
AOG = "0"
AOG = "1"
FSK Transmit
1296
2096
386
446
–6
–12
–2
–8
1300
2100
390
450
–4
–10
0
–6
1304 Hz
2104 Hz
394 Hz
454 Hz
–2 dBm
–8 dBm
2 dB
–4 dB
Signal Amplitude
Ratio
V
AOD
V
AO
(MARK) – V
AO
(SPACE)
–2
0
2 dB
Out-of-band
Energy
4 kHz to 8 kHz —
— P–20 dB
V
SPS
P : In-band Signal
Energy
8 kHz to 12 kHz —
— P–40 dB
More than12 kHz —
— P–60 dB
Output Offset Voltage
V
OFF
Output Load Resistance R
AO
To V
DD
/2
—
–150 — +150 mV
600
—
—
W
* 0 dBm = 0.775 Vrms
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