1.25G 40km CWDM SFP optical module DDM
Description
The CWDM SFP transceivers are high performance, cost effective modules supporting data-rate of 1.25Gbps and Up tp 80KM transmission distance with SMF.
The transceiver consists of three sections: an uncooled CWDM DFB laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.
The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further
information, please refer to SFP MSA.
Features Data-rate of 1.25Gbps operation 18 CWDM DFB wavelengths laser and PIN photodetector for 20km transmissionCompliant with SFP MSA and SFF-8472 with duplex LC receptacleDigital Diagnostic Monitoring:Internal Calibration or External Calibration Compatible with SONET OC-24-LR-1Compatible with RoHS+3.3V single power supplyOperating case temperature:Commercial Temperature: 0 to +70°C ;Industrial Temperature: -40 to +85°CApplications Gigabit Ethernet Fiber Channel Switch to Switch interface Switched backplane applications Router/Server interface Other optical transmission systems
Product Selection
TKSX12-3LCD20
| Wavelength |
xx |
Clasp Color Code |
Wavelength |
xx |
Clasp Color Code |
| 1270 nm |
27 |
Gray |
1450 nm |
45 |
Brown |
| 1290 nm |
29 |
Gray |
1470 nm |
47 |
Gray |
| 1310 nm |
31 |
Gray |
1490 nm |
49 |
Purple |
| 1330 nm |
33 |
Purple |
1510 nm |
51 |
Blue |
| 1350 nm |
35 |
Blue |
1530 nm |
53 |
Green |
| 1370 nm |
37 |
Green |
1550 nm |
55 |
Yellow |
| 1390 nm |
39 |
Yellow |
1570 nm |
57 |
Orange |
| 1410 nm |
41 |
Orange |
1590 nm |
59 |
Red |
| 1430 nm |
43 |
Red |
1610 nm |
61 |
Brown |
1.25G CWDM sfp details pic.
Digital Diagnostic Functions(DDM)
TKSX12-3LCD20 transceivers support the 2-wire serial communication protocol as defined in the SFP MSA. It is very closely related to the E2PROM defined in the GBIC standard, with the same electrical specifications.
The standard SFP serial ID provides access to identification information that describes the transceiver's capabilities, standard interfaces, manufacturer, and other information.
Additionally, TAKFLY SFP transceivers provide a unique enhanced digital diagnostic monitoring interface, which allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power and transceiver supply voltage. It also defines a sophisticated system of alarm and warning flags, which alerts end-users when particular operating parameters are outside of a factory set normal range.
The SFP MSA defines a 256-byte memory map in E2PROM that is accessible over a 2-wire serial interface at the 8 bit address 1010000X (A0h). The digital diagnostic monitoring interface makes use of the 8 bit address 1010001X (A2h), so the originally defined serial ID memory map remains unchanged. The interface is identical to, and is thus fully backward compatible with both the GBIC Specification and the SFP Multi Source Agreement.
The operating and diagnostics information is monitored and reported by a Digital Diagnostics Transceiver Controller (DDTC) inside the transceiver, which is accessed through a 2-wire serial interface. When the serial protocol is activated, the serial clock signal (SCL, Mod Def 1) is generated by the host. The positive edge clocks data into the SFP transceiver into those segments of the E2PROM that are not write-protected. The negative edge clocks data from the SFP transceiver. The serial data signal (SDA, Mod Def 2) is bi-directional for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocol activation. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially.
Digital diagnostics for the TKSX12-3LCD20 are internally calibrated by default.
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