SFP+ WDM12-R20 10G BIDI SFP+ 1270nm 20KM SMF LC DDM

SFP+ WDM12-R20 - 10G BIDI SFP+ 1270nm 20KM SMF LC DDM

Features
* 10Gb/s serial optical interface compliant to 802.3ae
10GBASE-LR, single LC connector for bi-directional
application, over20km SMF
* Electrical interface compliant to SFF-8431 specifications for
enhanced 8.5 and 10 Gigabit small form factor pluggable
module “XFP”
* 1270/1330nm DFB transmitter, PIN photo-detector
* 2-wire interface for management specifications compliant with SFF 8472 digital
diagnostic monitoring interface for optical transceivers
* Part number(-40°C to 85°C):
* line side, client side loopback function
* Advanced firmware allow customer system encryption information to be stored in
transceiver
* ROHS compliant
10Gb/s XFP Optical Transceiver Module
WDM/BIDI 1330/1270nm 20km
Applications
* High-speed storage area networks
* Computer cluster cross-connect
* Custom high-speed data pipes
* Line side loop back
* Client side loop back

1. GENERAL DESCRIPTION
This 10Gigabit XFP BiDi transceiver is designed to transmit and receive optical data
over single mode optical fiber for link length 20km.
The XFP BiDi module electrical interface is compliant to SFI electrical specifications.The
transmitter input and receiver output impedance is 100 Ohms differential. Data lines are
internally AC coupled. The module provides differential termination and reduce
differential to common mode conversion for quality signal termination and low EMI. SFI
typically operates over 200 mm of improved FR4 material or up to about 150mm of
standard FR4 with one connector.
The transmitter converts 10Gbit/s serial PECL or CML electrical data into serial optical
data compliant with the 10GBASE-LR standard.An open collector compatible Transmit
Disable (Tx_Dis) is provided.A logic “1,” or no connection on this pin will disable the
laser from transmitting.A logic “0” on this pin provides normal operation. The transmitter
has an internal automatic power control loop (APC) to ensure constant optical power
output across supply voltage and temperature variations.An open collector compatible
Transmit Fault (Tx_Fault) is provided. TX_Fault is a module output contact that when
high, indicates that the module transmitter has detected a fault condition related to laser
operation or safety.The TX_Fault output contact is an open drain/collector and shall be
pulled up to the Vcc_Host in the host with a resistor in the range 4.7-10 k?. TX_Disable
is a module input contact. When TX_Disable is asserted high or left open, the XFP
module transmitter output shall be turned off. This contact shall be pulled up to VccT
with a 4.7 k? to 10 k? resistor
The receiver converts 10Gbit/s serial optical data into serial PECL/CML electrical data.
An open collector compatible Loss of Signal is provided. Rx_LOS when high indicates
an optical signal level below that specified in the relevant standard. The Rx_LOS contact
is an open drain/collector output and shall be pulled up to Vcc_Host in the host with a
resistor in the range 4.7-10 k?, or with an active termination.Power supply filtering is
recommended for both the transmitter and receiver.The Rx_LOS signal is intended as a
preliminary indication to the system in which the XFP is installed that the received signal
strength is below the specified range. Such an indication typically points to non-installed
cables, broken cables, or a disabled, failing or a powered off transmitter at the far end of
the cable.