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V23832-R311-M101 Datasheet(PDF) 8 Page - Infineon Technologies AG |
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V23832-R311-M101 Datasheet(HTML) 8 Page - Infineon Technologies AG |
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8 / 30 page  V23832-T2131-M101 V23832-R121-M101 Description Data Sheet 8 2003-11-19 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 CID 1) 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 Transmitter Block Diagram 1) Consecutive Identical Digit (CID) immunity test pattern for STM-N signals, ITU-T recommendation G.957 sec. II. Input Stage Laser Diode Array 12 12 Data Data In Electrical Input Optical Output −RESET Laser Controller Up (LCU) 12 Laser Driver Laser Control 12 LE −LE Laser Enable VIN File: 3317 |
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