MF-156DS-R13-17X Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC
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MF-156DS-R13-17X Datasheet PDF : 9 Pages
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MITSUBISHI (OPTICAL DEVICES)
MF-156DF-T12-20x/29x/23x
MF-156DS-R13-17x
SONET/SDH TRANSMITTER & RECIEVER
TRANSMITTER PIN ALLOCATION
No. Symbol
1
NC
2
Lbs(+)
3
NC
4
Lbs(-)
5
GND
6
Vcc
7
Td
8
Vcc
9
Vcc
10 NC
Description
No user connection
Laser-bias monitor(+)
No user connection
Laser-bias monitor(-)
Ground
Vcc
Transmitter disable
Vcc
Vcc
No user connection
TRANSMITTER PIN DESCRIPTIONS
No. Symbol
20 NC
19 Lbf(+)
18 Vcc
17 Lbf(-)
16 Data
15 Data
14 GND
13 GND
12 Vcc
11 GND
Description
No user connection
Laser-backface monitor(+)
Vcc
Laser-backface monitor(-)
Data
Data
Ground
Ground
Vcc
Ground
Pin No.
5,11,
13,14
6,8,9,
12,18
15,16
7
2,4
17,19
1,3,
10,20
Function
I/O
GND
I
Vcc
I
Data & Data
I
Transmitter disable I
Laser-bias
O
monitor(+),
Laser-bias monitor(-)
Laser-backface
O
monitor(+),
Laser-backface
monitor(-)
NC
-
Pin description
These pin are the module’s ground connections.
They should be connected to a low inpedance ground plane(0V).
This is the power supply pin for the module.
It should be connected to +5.0V.
Recommended power supply decoupling.
This data input pin modulates the laser diode. When the Data input is
asserted,the laser diode is turned on.
Signal level of these pin are PECL level and internal Vbb bias. Refer to
electrical interface in NOTE1.
The transmitter is nomally enabled and only requires an external voltage
to disable.
Refer to electrical interface in NOTE2.
The laser bias current is calculated as a ratio of the voltage to an internal
10 ohm sensing resistor.
Ib[mA]={Lbs(+)-Lbs(-)}[mV]/10
Refer to electrical interface in NOTE3.
The laser backface monitor is calculated as a ratio of the voltage to an
internal 200 ohm sensing resistor.
Ibf[mA]={Lbf(+)-Lbf(-)}[mV]/200
Refer to electrical interface in NOTE3.
These pin are No user connection and should be left open.
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