1.25G CWDM SFP LC 20km
1.25Gbps Dual Fiber 20km CWDM SFP LC Transceiver
The products are compliant with the Small Form- Factor Pluggable (SFP) Multi-Source Agreement (MSA) and
SFF-8472. The Digital Diagnostic Monitoring functions as described in SFF-8472 are provided via an I2C serial
interface. The transceiver block diagram is shown as below Fig 1.
The module provides digital diagnostic information of its operating conditions and status, including
transmitting power, laser bias, receiver input optical power, module temperature, and supply voltage.
Calibration and alarm/warning threshold data are written and stored in internal memory (EEPROM).
The memory map is compatible with SFF-8472, as shown in Fig. 2. The diagnostic data are raw A/D
values and must be converted to real world units using calibration constants stored in EEPROM
locations 56 – 95 in A2h.
LC SFP Single Mode Transceiver
CWDM DFB laser diode transmitter and PIN receiver
Compliant with SFP MSA and SFF-8472 with LC receptacle
Single +3.3 Power Supply
Complies with Telcordia (Bellcore) GR-468-CORE
Typical data rate 1.25Gbps
Maximal reach 20km