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MF-156DF-T12-230 Datasheet(PDF) 5 Page - Mitsubishi Electric Semiconductor |
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MF-156DF-T12-230 Datasheet(HTML) 5 Page - Mitsubishi Electric Semiconductor |
5 / 9 page MITSUBISHI (OPTICAL DEVICES) MF-156DF-T12-20x/29x/23x MF-156DS-R13-17x SONET/SDH TRANSMITTER & RECIEVER TRANSMITTER PIN ALLOCATION No. Symbol Description No. Symbol Description 1 NC No user connection 20 NC No user connection 2 Lbs(+) Laser-bias monitor(+) 19 Lbf(+) Laser-backface monitor(+) 3 NC No user connection 18 Vcc Vcc 4 Lbs(-) Laser-bias monitor(-) 17 Lbf(-) Laser-backface monitor(-) 5 GND Ground 16 Data Data 6 Vcc Vcc 15 Data Data 7 Td Transmitter disable 14 GND Ground 8 Vcc Vcc 13 GND Ground 9 Vcc Vcc 12 Vcc Vcc 10 NC No user connection 11 GND Ground TRANSMITTER PIN DESCRIPTIONS Pin No. Function I/O Pin description 5,11, 13,14 GND I These pin are the module’s ground connections. They should be connected to a low inpedance ground plane(0V). 6,8,9, 12,18 Vcc I This is the power supply pin for the module. It should be connected to +5.0V. Recommended power supply decoupling. 15,16 Data & Data I This data input pin modulates the laser diode. When the Dat a input is asserted,the laser diode is turned on. Signal level of these pin are PECL level and internal Vbb bias. Refer t o electrical interface in NOTE1. 7 Transmitter disable I The transmitt er is nomally enabled and only requires an external voltage to disable. Refer to electrical interface in NOTE2. 2,4 Laser-bias monitor(+), Laser-bias monitor(-) O The laser bias current is calculat ed as a rat io of the volt age to an int ernal 10 ohm sensing resistor. Ib[mA]={Lbs(+)-Lbs(-)}[mV]/10 Refer to electrical interface in NOTE3. 17,19 Laser-backface monitor(+), Laser-backface monitor(-) O The laser backface monitor is calculated as a ratio of t he voltage to an internal 200 ohm sensing resistor. Ibf[mA]={Lbf(+)-Lbf(-)}[mV]/200 Refer to electrical interface in NOTE3. 1,3, 10,20 NC - These pin are No user connection and should be left open. |
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