RoHS Fiber Optic Modules 1.25Gbps 40km SFP Transceiver Module DDM
1.25Gbps 40km SFP Optical Transceiver, DDM
1. Feature:
- SFP package with LC connector
- 1310nm FP laser and PIN photodetector
- Up to 40Km transmission on SMF
- +3.3V single power supply
- LVPECL compatible data input/output interface
- Low EMI and excellent ESD protection
- laser safety standard IEC-60825 compliant
- Compatible with RoHS
- Digital Diagnostic SFF-8472 compliant
2. Application:
- Ethernet
- Telecom
- Fiber Channel
3. Absolute Maximum Ratings:
| Parameter | Symbol | Minimum | Maximum | Units |
| Storage Temperature | Tst | -40 | +85 | C |
| Supply Voltage | Vcc | 0 | +3.6 | V |
| Operating Relative Humidity | RH | 5 | 95 | % |
4. Operation Environment:
| Parameter | Symbol | Min | Typical | Max | Units | |
| Supply Voltage | Vcc | 3.15 | 3.3 | 3.45 | V | |
| Operating Case Temperature | Commercial | Tc | 0 | +70 | C | |
| Industrial | -40 | +85 | ||||
| Power Dissipation | 1 | W | ||||
| Data Rate | 1.25 | Gbps | ||||
5. Optical Characteristics:
(Ambient Operating Temperature 0C to +70C, Vcc =3.3 V)
| Parameter | Symbol | Min. | Typ. | Max. | Units |
| Transmitter Section | |||||
| Center Wavelength | o | 1260 | 1310 | 1360 | nm |
| Spectral Width(RMS) | – | – | 4 | nm | |
| Average Output Power | Po | -5 | – | 0 | dBm |
| Extinction Ratio | Er | 10 | – | 15 | dB |
| Rise/Fall Time(20%~80%) | Tr/Tf | 0.26 | ns | ||
| Total jitter | Tj | 0.43 | UI | ||
| Optical Eye Diagram | IEEE 802.3z and ANSI Fibre Channel Compatible | ||||
| Receiver Section | |||||
| Center Wavelength | o | 1260 | 1620 | nm | |
| Receiver Sensitivity | Rsen | -24 | dBm | ||
| Receiver Overload | Rov | 0 | dBm | ||
| Return Loss | 12 | dB | |||
| LOS Assert | LOSA | -36 | dBm | ||
| LOS Dessert | LOSD | -24 | dBm | ||
| LOS Hysteresis | 0.5 | 5 | |||
6. Electrical Characteristics:
(Ambient Operating Temperature 0C to +70C, Vcc =3.3 V)
| Parameter | Symbol | Min. | Typ. | Max. | unit | |
| Transmitter Section | ||||||
| Input Differential Impendence | Zin | 90 | 100 | 110 | Ohm | |
| Data Input Swing Differential | Vin | 500 | 2400 | mV | ||
| TX Disable | Disable | 2.0 | Vcc | V | ||
| Enable | 0 | 0.8 | V | |||
| TX Fault | Assert | 2.0 | Vcc | V | ||
| Dessert | 0 | 0.8 | V | |||
| Receiver Section | ||||||
| Output differential impendence | Zout | 100 | Ohm | |||
| Data Input Swing Differential | Vout | 370 | 2000 | mV | ||
| Rx_LOS | Assert | 2.0 | Vcc | V | ||
| Dessert | 0 | 0.8 | V | |||
7. EEPROM INFORMATION(A0):
| Addr | Field Size
(Bytes) |
Name of Field | HEX | Description |
| 0 | 1 | Identifier | 03 | SFP |
| 1 | 1 | Ext. Identifier | 04 | MOD4 |
| 2 | 1 | Connector | 07 | LC |
| 3-10 | 8 | Transceiver | 00 00 00 02 12 00 0D 01 | Transmitter Code |
| 11 | 1 | Encoding | 01 | 8B10B |
| 12 | 1 | BR, nominal | 0D | 1250M bps |
| 13 | 1 | Reserved | 00 | |
| 14 | 1 | Length (9um)-km | 28 | 40km |
| 15 | 1 | Length (9um) | 64/C8/FF | |
| 16 | 1 | Length (50um) | 37 | 550m |
| 17 | 1 | Length (62.5um) | 37 | 550m |
| 18 | 1 | Length (copper) | 00 | |
| 19 | 1 | Reserved | 00 | |
| 20-35 | 16 | Vendor name | 57 49 4E 54 4F 50 20 20
20 20 20 20 20 20 20 20 |
|
| 36 | 1 | Reserved | 00 | |
| 37-39 | 3 | Vendor OUI | 00 00 00 | |
| 40-55 | 16 | Vendor PN | xx xx xx xx xx xx xx xx
xx xx xx xx xx xx xx xx |
ASC II |
| 56-59 | 4 | Vendor rev | 31 2E 30 20 | V1.0 |
| 60-61 | 2 | Wavelength | 05 1E | 1310nm |
| 62 | 1 | Reserved | 00 | |
| 63 | 1 | CC BASE | XX | Checksum of byte 0~62 |
| 64-65 | 2 | Options | 00 1A | LOS, TX_DISABLE, TX_FAULT |
| 66 | 1 | BR, max | 32 | 50% |
| 67 | 1 | BR, min | 32 | 50% |
| 68-83 | 16 | Vendor SN | 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 |
Unspecified |
| 84-91 | 8 | Vendor date code | XX XX XX 20 | Year, Month, Day |
| 92-94 | 3 | Reserved | 00 | |
| 95 | 1 | CC_EXT | XX | Checksum of byte 64~94 |
| 96-255 | 160 | Vendor-specific |
8. Diagnostics:
| Parameter | Range | Accuracy | Unit | Calibration | |
| Temperature | C | -5 ~ 70 | ±3 | ºC | Internal |
| I | -40 ~ 80 | ±3 | |||
| Voltage | 0 ~ VCC | 0.1 | V | Internal | |
| Bias Current | 0 ~ 120 | ±2 | mA | Internal | |
| Tx Power | -5 ~ 0 | ±1 | dBm | Internal | |
| Rx Power | <0 | ±1 | dBm | Internal | |
9. Pin Description:
| Pins | Name | Description | NOTE |
| 1 | VeeT | Transmitter Ground | |
| 2 | Tx Fault | Transmitter Fault Indication | 1 |
| 3 | Tx Disable | Transmitter Disable | 2 |
| 4 | MOD DEF2 | Module Definition 2 | 3 |
| 5 | MOD DEF1 | Module Definition 1 | 3 |
| 6 | MOD DEF0 | Module Definition 0 | 3 |
| 7 | Rate Select | Not Connected | |
| 8 | LOS | Loss of Signal | 4 |
| 9 | VeeR | Receiver Ground | |
| 10 | VeeR | Receiver Ground | |
| 11 | VeeR | Receiver Ground | |
| 12 | RD- | Inv. Received Data Output | 5 |
| 13 | RD+ | IReceived Data Output | 5 |
| 14 | VeeR | Receiver Ground | |
| 15 | VccR | Receiver Power | |
| 16 | VccT | Transmitter Power | |
| 17 | VeeT | Transmitter Ground | |
| 18 | TD+ | Transmit Data Input | 6 |
| 19 | TD- | Inv. Transmit Data Input | 6 |
| 20 | VeeT | Transmitter Ground |
Notes:
1. TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ 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’s optical output. It is pulled up within the module with a 4.7k~10kΩ resistor. Its states are:
Low (0~0.8V): Transmitter on
(>0.8V, <2.0V): Undefined
High (2.0~3.3V): 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~10kΩ 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 the two-wire serial interface for serial ID
MOD-DEF 2 is the data line of the two-wire serial interface for serial ID
4. LOS is an open collector output, which should be pulled up with a 4.7k~10kΩ 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 output. They are internally AC-coupled 100Ω differential lines which should be terminated with 100Ω (differential) at the user SERDES.
6. These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω differential termination inside the module.
About Linkwell
Bringing Better Connections
Linkwell is a Fiber Optic company, focused as a “Reliable Partner” on offering solution and suitable products to Operators and Partners.
With our 9 years vendor experience for China Telecom, We combine installation experience, inspection experience, manufacturing experience, and delivering experience es to deliver first-in-class solutions and products.
LinkWell was initially founded by 33-Year experienced Engineers, 21-years-experienced Factory Owner and 16-Years experienced coustanlt.
At LinkWell, All of our staff are trained to adopt a customer driven approach as our strategic focus with fundamental values and generally accepted moral principles such as respect and honesty being the basis of all our dealings.
These inculcated values in our staff has led to the establishment of LinkWell as a mainstay force in this industry.
Our staff have been extensively trained to harness the company’s strategic strengths and core competencies in order to provide the highest level of satisfaction to our valued clients.
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