SFP 1.25G Bidi Tx1310nm/Rx1550nm 20KM LC
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General Description:
Brand : D-TECH
Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA), The transceiver consists of five sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the FP laser and the PIN photo-detector .The module data link up to 20km in 9/125um single mode fiber. The optical output can be disabled by a TTL logic high-level input of Tx Disable, and the system can also disable the module via I2C. Tx Fault is provided to indicate the degradation of the laser. Loss of signal (LOS) output is provided to indicate the loss of an input optical signal from the receiver or the link status with the partner. The system can also get the LOS (or link) or disable/fault information via I2C register access.
Features:
- Up to 1250 MB/s data links
- 1310nm FP laser transmitter and PIN photo-detector
- Up to 20km on 9/125µm SMF
- Hot-pluggable SFP footprint
- Duplex LC/UPC-type pluggable optical interface
- Low power dissipation
- Metal enclosure, for lower EMI
- RoHS-compliant and lead-free
- Support a Diagnostic Monitoring interface
- Single +3.3V power supply
- Compliant with SFF-8472
- Case operating temperature:
- Commercial: 0 ~ +70°C
- Extended: -10 ~ +80°C
- Industrial: -40 ~ +85°C
Application:
- Switch to Switch Interface
- Gigabit Ethernet
- Switched Backplane Applications
- Router/Server Interface
- Other Optical Link
Absolute Maximum Ratings:
It has to be noted that the operation in excess of any individual absolute maximum ratings might cause permanent damage to this module
| Parameter | Symbol | Min | Max | Unit | Notes |
|---|---|---|---|---|---|
| Storage Temperature | TS | -40 | 85 | °C | |
| Power Supply Voltage | VCC | -0.3 | 3.6 | V | |
| Relative Humidity | RH | 5 | 95 | % | (non-condensation) |
| Damage Threshold | THd | 5 | dBm |
Recommended Operating Conditions and Power Supply Requirements:
| Parameter | Symbol | Min | Typical | Max | Unit | Notes |
|---|---|---|---|---|---|---|
| Operating Case Temperature | TOP | 0 | 70 | °C | Commercial | |
| -10 | 80 | °C | Extended | |||
| -40 | 85 | °C | Industrial | |||
| Power Supply Voltage | VCC | 3.135 | 3.3 | 3.465 | V | |
| Data Rate | 1250 | Mb/s | ||||
| Control Input Voltage is high. | 2 | VCC | ||||
| Control Input Voltage is low. | 0 | 0.8 | V | |||
| Link Distance (SMF) | D | 10 | km | 9/125um |
Specification of Transmitter Electrical Characteristics:
| Parameter | Symbol | Min. | Typical | Max | Unit | Notes |
|---|---|---|---|---|---|---|
| Power Consumption | P | 0.85 | 0.9 | W | Commercial | |
| Industrial | ||||||
| Supply Current | Icc | 250 | 270 | mA | Commercial | |
| Industrial | ||||||
| Transmitter Single-ended Input Voltage Tolerance | VCC | -0.3 | 4.0 | V | ||
| Differential Input Voltage Swing | Vin,pp | 200 | 2400 | mVpp | ||
| Differential Input Impedance | Zin | 90 | 100 | 110 | Ohm | |
| Transmit Disable Assert Time | 5 | us | ||||
| Transmit Disable Voltage | Vdis | VCC-1.3 | VCC | V | ||
| Transmit Enable Voltage | Ven | Vee-0.3 | 0.8 | V | ||
| Receiver Differential Output Voltage Swing | Vout,pp | 500 | 900 | mVpp | ||
| Differential Output Impedance | Zout | 90 | 100 | 110 | Ohm | |
| Data Output Rise/Fall Time | Tr/Tf | 100 | ps | 20% to 80% | ||
| LOS Assert Voltage | VlosH | VCC-1.3 | VCC | V | ||
| LOS De-assert Voltage | VlosL | Vee-0.3 | 0.8 | V |
Digital Diagnostic Functions:
| Parameter | Symbol | Min. | Max. | Unit | Notes |
|---|---|---|---|---|---|
| Temperature monitor: absolute error | DMI_Temp | -3 | 3 | degC | Over-operating temperature |
| Supply voltage monitor absolute error | DMI_VCC | -0.15 | 0.15 | V | Full operating range |
| RX power monitor: absolute error | DMI_RX | -3 | 3 | dB | |
| The current monitor | DMI_bias | -10% | 10% | mA | |
| TX power monitor absolute error | DMI_TX | -3 | 3 | dB |
Hear some related SFP links below:
SFP 1.25G BIDI 1550Tx/1310Tx 40KM LC:
SFP 1.25G 1550Tx/1310Rx 60KM LC:
SFP 1.25G BIDI 1550Tx/1490Rx 80KM LC:
SFP 1.25G BIDI 20KM 1310TX/1550RX SC:
SFP 1.25G BIDI 20KM 1550TX/1310RX LC:
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