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RoHS Compliant Multi-Rate CWDM SFP Transceiver for GbE and
Fiber Channel with DDM Function
Description
The LCP-1250 CWDM series are designed
for
coarse
wavelength
applications (CWDM) and hot pluggable SFP
transceiver modules that data rates up to 1.25Gb/s.
The LCP-1250 CWDM series are support GbE
(1.25Gb/s) and 1x Fiber channel (1.062Gb/s). The
selectiveness of center wavelength has 1470,
1490, 1510, 1530, 1550, 1570, 1590, and 1610 nm.
The LCP-1250 CWDM series are designed to
be compliant with SFF-8472 SFP Multi-source
Agreement
(MSA)
monitoring functions: Temperature, V
optical power, TX laser bias current, and RX
received optical power.
The post-amplifier of the LCP-1250 CWDM
series also includes a Loss of Signal (LOS) circuit
that provides a TTL logic-high output when the
received optical level is below a preset LOS
Assert threshold.
DELTA ELECTRONICS, INC.
division
multiplexing
with
digital
diagnostic
, TX
CC
FEATURES
Compliant with SFP Transceiver SFF-8472
MSA specification with internal calibration
Multi-rate operation from 125 to 1250Mpbs
Single + 3.3V Power Supply and TTL Logic
Interface
8 Wavelength (λ) Uncooled CWDM DFB laser
LD transmitter
EEPROM with Serial ID Functionality
Laser Class 1 Product which comply with the
requirements of IEC 60825-1 and IEC 60825-2
Duplex LC Connector interface
Applications
Gigabit Ethernet
Switch to Switch interface
Switched backplane applications
File server interface
Performance
LCP-1250D4MxxRB: 1470nm to 1610nm CWDM
DFB laser transmitter and PIN receiver, 19dB
link budget
LCP-1250D4RxxRB: 1470nm to 1610nm CWDM
DFB laser transmitter and PIN receiver, 24dB
link budget
LCP-1250D4VxxRB: 1470nm to 1610nm CWDM
DFB laser transmitter and APD receiver, 30dB
link budget
1
2008/1/15
Rev. 0A
www.deltaww.com
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Summary of Contents for Delta Electronics Multi-Rate CWDM SFP Transceiver LCP-1250 CWDM
- Page 1 Loss of Signal (LOS) circuit that provides a TTL logic-high output when the received optical level is below a preset LOS Assert threshold. DELTA ELECTRONICS, INC. FEATURES Compliant with SFP Transceiver SFF-8472 MSA specification with internal calibration Multi-rate operation from 125 to 1250Mpbs Single + 3.3V Power Supply and TTL Logic...
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Page 2: Absolute Maximum Ratings
1. Internally AC coupled and terminated to 100Ohm differential load. 2. Pull up to V on host Board 3. Internally AC coupled, but requires a 100Ohm differential termination at or internal to Serializer/ Deserializer. 4. These are 20%~80% values DELTA ELECTRONICS, INC. Symbol Min. Typ. Max. Symbol Min. -
Page 3: Optical Characteristics
Overload (Avg.) LCP-1250D4MxxRB LCP-1250D4RxxRB LCP-1250D4VxxRB Reflectance Notes: 1. These are unfiltered 20%~80% values. 2. The sensitivity is provided at a BER of 1×10 -1 PRBS and ER=9dB. DELTA ELECTRONICS, INC. -1 NRZ) Symbol Min. Typ. Max. 1464.5 1470 1477.5 1484.5 1490 1497.5... - Page 4 Mask of the eye diagram for the optical transmit signal Recommend Circuit Schematic Protocol Vcc Tx_Disable Tx_Fault Protocol IC SerDes IC Rx_LOS PLD / PAL DELTA ELECTRONICS, INC. 3.3V RES1 10uF 0.1uF VccT 0.1uF Tx_Disable Tx_Fault TD + TD -...
- Page 5 VeeT Transmitter Ground Transmit Data In Inv. Transmit Data In VeeT Transmitter Ground Plug Seq.: Pin engagement sequence during hot plugging. DELTA ELECTRONICS, INC. Plug Function Seq. Note 1 Note 2,Module disables on high or open Note 3, 2 wire serial ID interface...
- Page 6 The inputs will accept differential swings of 500 – 2400 mV (250 – 1200 mV single-ended), though it is recommended that values between 500 and 1200 mV differential (250 – 600 mV single-ended) be used for best EMI performance. DELTA ELECTRONICS, INC. www.deltaww.com 2008/1/15...
- Page 7 Time from fault to TX fault on. Time TX Disable must be held high to reset TX_Fault. Time from LOS state to Rx LOS assert. Time from non-LOS state to Rx LOS deassert. DELTA ELECTRONICS, INC. Symbol Min. t_off t_on...
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Page 8: Package Outline Drawing
Package Outline Drawing 2008/1/15 Rev. 0A www.deltaww.com DELTA ELECTRONICS, INC. - Page 9 (96 bytes) Vender Specific (32 bytes) Reserved in SFP MSA (128 bytes) Digital Diagnostic Memory Map Specific Data Field Descriptions DELTA ELECTRONICS, INC. 2 wire address 1010001 X (A2h) Alarm and Warning Thresholds (56 bytes) Cal Constants (40 bytes) Real Time Diagnostic Interface...
- Page 10 3) Byte 15: Transmission distance in 100m, distance >25.5km: FFh. 4) Byte 40-55: Delta part number. 5) Byte 60-61: The center wavelength of transmitter. 6) Byte 63: Check sum of bytes 0-62. 7) Byte 68-83: Serial number. DELTA ELECTRONICS, INC. Address ASCII Note 5 Note 5...
- Page 11 2) I : Operating current at room temperature. The min. setting current is 0 mA. 3) P: Operating optical power of transmitter at room temperature. 4) P : Overload optical power of receiver. DELTA ELECTRONICS, INC. Name Value (Dec.) (MAX.)+15 (MIN.) (MAX.)+10...
- Page 12 Power Supply Voltage TX Bias Current TX Optical Power RX Optical Power Notes: DELTA ELECTRONICS, INC. Description Digital state of the Tx disable input pin Read/ Write bit that allow software disable of laser Digital state of the Tx fault output pin Digital state of the LOS output pin.
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Page 13: Regulatory Compliance
Duplex SC Receptacle IEC 801.2 (#4) Electrostatic Discharge to MIL-STD-883C the Electrical Pins Method 3015.4 EIAJ#1988.3.2B Version 2, Machine model DELTA ELECTRONICS, INC. Reference Qty’ (1) Satisfied with electrical characteristics of product spec. (2) No physical damage Evaluation 2008/1/15 Rev. 0A... - Page 14 Ordering information for SFP modules LCP-1250D4 X : Link Budget M: 19dB R: 24dB V: 30dB : RoHS Compliance R: RoHS Compliant DELTA ELECTRONICS, INC. Wavelength 47: Single-mode 1470nm 49: Single-mode 1490nm 51: Single-mode 1510nm 53: Single-mode 1530nm 55: Single-mode 1550nm 57: Single-mode 1570nm...
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