V23832-T2131-M101 Datasheet, PDF (8/30 Pages) Infineon Technologies AG – PAROLI 2 Tx AC, 1.6 Gbit/s

V23832-T2131-M101
V23832-R121-M101
Description
Transmitter V23832-T2131-M101
The transmitter module converts parallel electrical input signals via a laser driver and a
Vertical Cavity Surface Emitting Laser (VCSEL) diode array into parallel optical output
signals. All input data signals are Multistandard Differential Signals (LVDS compatible;
LVPECL and CML is also supported because of the wide common input range). The
electrical interface (LVDS, LVPECL or CML) is selected by the supply inputs V_IN. The
data rate is up to 1600 Mbit/s for each channel. The transmitter module’s min. data rate
of 500 Mbit/s is specified for the CID¹⁾ worst case pattern (disparity 72) or any pattern with
a lower disparity. The transmitter features active feedback of optical output power and
extinction ratio, which guarantees a constant power budget.
Unused channels can be forced to a quiescent state by applying e.g. a constant high
level to the input stage of these channels. The integrated alerter circuit (see “Laser Eye
Safety Design Considerations” on Page 12) will switch off the corresponding
transmitter output, which results also in a reduced power consumption. Unused
transmitter input channels can also be left open. The integrated swing detection circuit
will assure a quiescent output state for these channels.
A logic low level at –RESET switches all laser outputs off. During power-up –RESET
must be used as a power-on reset which disables the laser driver and laser control until
the power supply has reached a 3.135 V level.
The Laser Controller Up (LCU) output is low if a laser fault is detected or –RESET is
forced to low.
All non data signals have LVCMOS levels.
Transmission delay of the PAROLI system is ≤ 1 ns for the transmitter, ≤ 1 ns for the
receiver and approximately 5 ns per meter for the fiber optic cable.
Figure 4
Electrical
Input
12
Data In
Input
Stage
LE −LE Laser Enable
Optical
Output
12 _Laser
Driver
12
Laser
Diode
Array
12
Data
Laser
Control
V_IN
−RESET Laser Controller
Up (LCU)
Transmitter Block Diagram
File: 3317
1) _{Consecutive Identical Digit (CID) immunity test pattern for STM-N signals,}
ITU-T recommendation G.957 sec. II.
Data Sheet
8
2003-11-19