V23826-C18-T64 Datasheet, PDF (4/12 Pages) Infineon Technologies AG – DC/DC (5 V/3.3 V) Single Mode 155 MBd ATM/SDH/SONET 1x9 Long Haul Transceiver with ST Connector

V23826-C18-T64
V23826-C18-T364
Description
The transmitter converts electrical PECL compatible serial data (TD and TDnot) into
optical serial data. It 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.
This transceiver contains an Input Signal Monitor (ISM), that switches the optical power
off if a continuously low level is applied at Data Input.
The receiver component converts the optical serial data into PECL compatible electrical
data (RD and RDnot). The Signal Detect (SD, active high) shows whether optical data is
present .¹⁾
This module is a Class 1 laser product, due to an integrated automatic shutdown circuit
that disables the laser when it detects transmitter failures.
Single fault condition is ensured by means of an integrated automatic shutdown circuit
that disables the laser when it detects transmitter failures. A reset is only possible by
turning the power off, and then on again.
The transceiver contains a supervisory circuit to monitor the power supply. This circuit
makes an internal reset signal whenever the supply voltage drops below the reset
threshold. It keeps the reset signal active for at least 15 milliseconds after the voltage
has risen above the reset threshold. During this time the laser is inactive.
Regulatory Compliance
Feature
Standard
Electrostatic Discharge MIL-STD 883C
(ESD) to the Electrical Method 3015.4
Pins
Immunity:
Electrostatic Discharge
(ESD) to the Duplex SC
Receptacle
EN 61000-4-2
IEC 61000-4-2
Immunity:
Radio Frequency
Electromagnetic Field
EN 61000-4-3
IEC 61000-4-3
Emission:
Electromagnetic
Interference EMI
FCC Class B
EN 55022 Class B
CISPR 22
Comments
Class 1 (>1000 V)
Discharges of ±15 kV with an air
discharge probe on the receptacle
cause no damage.
With a field strength of 10 V/m rms,
noise frequency ranges from 3 MHz
to 1 GHz. No effect on transceiver
performance between the
specification limits.
Noise frequency range:
30 MHz to 6 GHz, margins depend
on PCB layout and chassis design.
1) _{We recommend to switch off the transmitter supply (VCC - Tx) if no transmitter input data is applied.}
Data Sheet
4
2000-03-01