1.25Gbps Single Mode SFP Transceiver (20km) ATR-S0203 Features a. Single Power Supply 3.3V b. Small Form Factor Pluggable (SFP) MSA compatible c. LVPECL Compatible Signal Interface d. Duplex LC Connector Applications a. SONET/SDH /ATM c. Distributed Multi-processing d. Switch to Switch Interface e. Bus Extension Application f. Channel Extender, Data Storage Systems g. High Speed I/O for File Server Absolute maximum ratings Parameter Symbol Min. Max. Unit Storage Temperature TS -40 +85 ℃ Operating Temperature Top 0 +70 ℃ Supply Voltage VCC -0.5 +3.6 V Voltage at any Input Pin VIN 0 Vcc V Operating Conditions Transmitter（T=0 to +70℃, VCC =3.13~3.47V） Parameter Symbol Min. Typ. Max. Unit Central Wavelength λC 1270 1310 1350 nm Spectral Width(RMS) Δλ - - 3 nm Output Power Po -6 - -1 dBm Extinction Ratio ER 8.2 - - dB Optical Rise/Fall Time Tr/Tf - - 260 ps Differential Input Voltage VIH- VIL 500 - 2000 mV Tx Disable Input Voltage_Low TDIS, L 0 0.5 V Tx Disable Input Voltage_High TDIS, H 2.0 Vcc V Transmit Fault Output-Low TX_FAULTL 0 - 0.8 V Transmit Fault Output-High TX_FAULTH 2.0 - VCC V Receiver （T=0 to +70℃, Vcc=3.13~3.47V (+3.3V) Parameter Symbol Min. Typ. Max. Unit Wavelength Range λ 1100 - 1600 nm MIN. Input Power (Sensitivity) PMIN - - -21 dBm MAX. Input Power (Saturation) PMAX -3 - - dBm No. 8, Jingwu Road Ding Mao Development Zone Zhenjiang 212009, China Tel: (86)511-8885688(5088) Fax: (86)511-8889135 Email: [email protected], [email protected] 1.25Gbps Single Mode SFP Transceiver (20km) ATR-S0203 Signal Detect-Asserted PA - - -21 dBm Signal Detect-Deasserted PD -35 - - dBm Signal Detect Hysteresis PHYS 1 - Return Loss ORL 12 - - dB Differential Output Voltage VOH- VOL Receiver Loss of Signal Output Voltage-Low RX_LOSL 0 - 0.8 V Receiver Loss of Signal Output Voltage-High RX_LOSH 2.0 - VCC V Block Diagram of Transceiver Pin Assignment and Function Definitions dB It is the responsibility of the system integrator to assure that no thermal, energy, or voltage hazard exists during the hot-plug-unplug sequence. It is also the responsibility of the system integrator and end-user to minimize static electricity and the probability of ESD events by careful design. No. 8, Jingwu Road Ding Mao Development Zone Zhenjiang 212009, China Tel: (86)511-8885688(5088) Fax: (86)511-8889135 Email: [email protected], [email protected] 1.25Gbps Single Mode SFP Transceiver (20km) ATR-S0203 SFP Transceiver Electrical Pad Layout Pins Assignment Function definition Pin No. Name VeeT 1 TX Fault 2 TX Disable 3 MOD-DEF2 4 Function Transmitter Ground Transmitter Fault Indication Transmitter Disable Module Definition 2 Plug Seq. 1 3 3 3 Notes Note 1 Note 2 Note 3 No. 8, Jingwu Road Ding Mao Development Zone Zhenjiang 212009, China Tel: (86)511-8885688(5088) Fax: (86)511-8889135 Email: [email protected], [email protected] 1.25Gbps Single Mode SFP Transceiver (20km) ATR-S0203 MOD-DEF1 Module Definition 1 3 Note 3 5 MOD-DEF0 Module Definition 0 3 Note 3 6 Rate Select Not Connected 3 7 LOS Loss of Signal 3 Note 4 8 VeeR Receiver Ground 1 9 VeeR Receiver Ground 1 10 VeeR Receiver Ground 1 11 RDInv. Received Data Out 3 Note 5 12 RD+ Received Data Out 3 Note 5 13 VeeR Receiver Ground 1 14 VccR Receiver Power 2 15 VccT Transmitter Power 2 16 VeeT Transmitter Ground 1 17 TD+ Transmit Data In 3 Note 6 18 TDInv Transmit Data In 3 Note 6 19 VeeT Transmitter Ground 1 20 Notes: 1. TX Fault is an open collector output, which should be pulled up with a 4.7K~10K. resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 0.8V. 2. TX Disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7K~10K. resistor. Its states are: Low (0~0.8V) : Transmitter on (>0.8V, <2.0V) : Undefined High (2.0~3.465V) : Transmitter Disabled Open : Transmitter Disabled. 3. MOD-DEF 0,1,2 are the module definition pins. They should be pulled up with a 4.7K~10K. resistor on the host board. The pull-up voltage shall be VccT or VccR. MOD-DEF 0 is grounded by the module to indicate that the module is present. MOD-DEF 1 is the clock line of two wire serial interface for serial ID. MOD-DEF 2 is the data line of two wire serial interface for serial ID. 4. LOS is an open collector output, which should be pulled up with a 4.7K~10K. resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates loss of signal. In the low state, the output will be pulled to less than 0.8V. 5. These are the differential receiver outputs. They are AC coupled 100. differential lines which should be terminated with 100. (differential) at the user SERDES. 6. These are the differential transmitter inputs. They are AC-coupled, differential lines with 100.differential termination inside the module. Recommended Host Board Supply Filtering Network No. 8, Jingwu Road Ding Mao Development Zone Zhenjiang 212009, China Tel: (86)511-8885688(5088) Fax: (86)511-8889135 Email: [email protected], [email protected] 1.25Gbps Single Mode SFP Transceiver (20km) ATR-S0203 Example SFP Host Board Schematic SFP Mechanical Ordering Information TX Power Part No. (dBm) ATR-S0203 -6~-1 RX Sens (Max.) (dBm) -21 Supply Voltage Distance 3.3V 20km No. 8, Jingwu Road Ding Mao Development Zone Zhenjiang 212009, China Tel: (86)511-8885688(5088) Fax: (86)511-8889135 Email: [email protected], [email protected]