V23836-C18-C363 Infineon Technologies, V23836-C18-C363 Datasheet - Page 4

• Manufacturer Part Number: V23836-C18-C363
• Description: 1x9 Transceiver with Duplex SC Receptacle Single Mode 1300 nm 21 km SONET OC-3 / SDH STM-1
• Manufacturer: Infineon Technologies

Functional Description
This transceiver is designed to transmit serial data via single mode fiber.
Figure 2
The receiver component converts the optical serial data into PECL compatible electrical
data (RD+ and RD–). The Signal Detect (SD, active high) shows whether optical data is
present
The transmitter converts electrical PECL compatible serial data (TD+ and TD–) into
optical serial data.
The transmitter contains a laser driver circuit that drives the modulation and bias current
of the laser diode. The currents are controlled by a power control circuit to guarantee
constant output power of the laser over temperature and aging.
The power control uses the output of the monitor PIN diode (mechanically built into the
laser coupling unit) as a controlling signal, to prevent the laser power from exceeding the
operating limits.
Single fault condition is ensured by means of an integrated automatic shutdown circuit
that disables the laser when it detects transmitter failures or when
is only possible by turning the power off, and then on again.
1)
Preliminary Product Information
We recommend to switch off the transmitter supply (
1)
.
Functional Diagram
RD+
RD
TD+
TD
SD
Monitor
Automatic
Shut-Down
Receiver
Power
Control
Laser
Driver
4
V
CC
Tx) if no transmitter input data is applied.
Tx
Coupling Unit
Rx
Coupling Unit
e/o
Laser
o/e
o/e
Single
Mode
Fiber
V
V23836-C18-C363
CC
V23836-C18-C63
is too high. A reset
Description
File: 1365
2004-02-13