Industrial 1.25Gb/s 20km SFP Transceiver
Key Featues
Technical Information
| Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
| Transmitter Section: | ||||||
| Input differential impedance | Rin | 90 | 100 | 110 | W | 1 |
| Single ended data input swing | Vin PP | 250 | 1200 | mVp-p | ||
| Transmit Disable Voltage | VD | Vcc – 1.3 | Vcc | V | 2 | |
| Transmit Enable Voltage | VEN | Vee | Vee+ 0.8 | V | ||
| Transmit Disable Assert Time | Tdessert | 10 | us | |||
| Receiver Section: | ||||||
| Single ended data output swing | Vout,pp | 250 | 800 | mv | 3 | |
| LOS Fault | Vlosfault | Vcc – 0.5 | VCC_host | V | 5 | |
| LOS Normal | Vlos norm | Vee | Vee+0.5 | V | 5 | |
| Power Supply Rejection | PSR | 100 | mVpp | 6 | ||
Note:
1. AC coupled.
2. Or open circuit.
3. Into 100 ohm differential termination.
4. 20 – 80 %
5. LOS is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
6. All transceiver specifications are compliant with a power supply sinusoidal modulation of 20 Hz to 1.5MHz up to specified value applied through the power supply filtering network shown on page 23 of the Small Form-factor Pluggable (SFP) Transceiver Multi-Source Agreement (MSA), September 14, 2000.
| Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
| Transmitter Section: | ||||||
| Center Wavelength | λc | 1270 | 1310 | 1360 | nm | |
| Spectral Width(RMS) | σRMS | 3 | nm | |||
| Optical Output Power | Pout | -9 | -3 | dBm | 1 | |
| Extinction Ratio | ER | 8.2 | dB | |||
| Optical Rise/Fall Time | tr / tf | 260 | ps | 2 | ||
| Relative Intensity Noise | RIN | -120 | dB/Hz | |||
| Output Eye Mask | Compliant with IEEE802.3 z (class 1 laser safety) | |||||
| Receiver Section: | ||||||
| Optical Input Wavelength | λc | 1260 | 1360 | nm | ||
| Receiver Overload | Pol | -3 | dBm | 4 | ||
| RX Sensitivity | Sen | -24 | dBm | 4 | ||
| RX_LOS Assert | LOS A | -35 | dBm | |||
| RX_LOS De-assert | LOS D | -25 | dBm | |||
| RX_LOS Hysteresis | LOS H | 0.5 | dB | |||
| General Specifications: | ||||||
| Data Rate | BR | 1.25 | Gb/s | |||
| Bit Error Rate | BER | 10-12 | ||||
| Max. Supported Link Length on 9/125μm SMF@1.25Gb/s | LMAX | 20 | km | |||
| Total System Budget | LB | 15 | dB | |||
Application
Description
Recommended Circuit
Dimension
