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RXM-750L Datasheet

  • RXM-750L

  • Telecomm/Datacomm

  • 7頁

  • ETC

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RXM-750 SONET/SDH Receiver Module
Product Data Sheet
Functional Overview
This highly integrated module converts a 45Mb/s to 750
Mb/s fiber-optic NRZ signal to differential PECL data
outputs. A CMOS flag alerts the user to a loss of signal
condition when the optical input falls below an
acceptable level.
A single +5 Volt supply provides bias for the module鈥檚
preamplifier, and Quantizer. The photodiode may be
biased to +5 Volts. All elements are integrated into
fiber-coupled 1.3鈥?X 0.635鈥?20 pin DIL package. The
RXM-750 footprint and pinout are industry common for
ease of integration.
The optical signal is coupled through a 62.5
碌m
multimode optical fiber to a hermetic module which
encases an InGaAs PiN-photodiode and preamplifier.
The PiN-photodiode converts the optical signal to an
electrical current. The signal is then converted to a
voltage and amplified by a low noise transimpedance
amplifier.
Further gain is provided by the quantizer, which also
provides a Flag output when the optical signal falls
below an acceptable level.
Figure 1. RXM-750 Functional Block Diagram
Vectron International 166 Glover Avenue Norwalk CT. 06856-5160
Tel: 1-88-VECTRON-1
www.vectron.com
2

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