RSFP56-50G-LR is a 1310nm DFB laser based 50Gb/s SFP56 transceiver. It is designed to transmit and receiver optical data up to 10km over single mode fiber. The transceiver is compliant with SFF-8472, SFF-8402, SFF-8432 and applicable portions of SFF-8431. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8472.
SFP56 50G 1310nm LR 10KM DDM Transceiver RSFP56-50G-LR
OPTIC PORTS DEFINITION
| NO. | Parameter | Symbol | Unit | Min. | Typ. | Max. | Note |
| Transmitter | |||||||
| 3.1 | Center Wavelength | λ | nm | 1295 | 1310 | 1325 | |
| 3.2 | Spectral Width | -20dB | nm | 1 | ||||
| 3.3 | Side Mode Suppression Ratio | SMSR | dB | 30 | |||
| 3.4 | Average Launch Power | dBm | -4.5 | 4.2 | |||
| 3.5 | OMA_outer | POMA | dBm | -1.5 | 4 | ||
| 3.6 | OMA_outer - TDECQ | dBm | -2.9 | 26.5625Gbd_PAM4 | |||
| 3.7 | Transmitter and dispersion eye closure for PAM4 (TDECQ) | dB | 3.2 | 26.5625Gbd_PAM4 | |||
| 3.8 | TDECQ-10log10(Ceq) | dB | 3.2 | 26.5625Gbd_PAM4 | |||
| 3.9 | Transmitter and dispersion(TDP) | dB | 2.7 |
25.78125Gbd_NRZ ,10.3125Gbd_NRZ |
|||
| 3.10 | Average Launch Power of OFF Transmitter | dBm | -30 | ||||
| 3.11 | Extinction Ratio | ER | dB | 3.5 | |||
| 3.12 | Optical return loss tolerance | dB | 15.6 | ||||
| 3.13 | RIN15.6OMA | dBm | -132 | ||||
| 3.14 | Transmitter Reflectance | dB | -26 | ||||
| Receiver | |||||||
| 3.15 | Center Wavelength | λ | nm | 1295 | 1325 | ||
| 3.16 | Damage Threshold | dBm | 5.2 | ||||
| 3.17 | Average Receive Power | dBm | -10.8 | 4.2 | |||
| 3.18 | Receiver power(OMA) | dBm | 4 | ||||
| 3.19 | Receiver sensitivity (OMA) | POMA | dBm | -8.4 | 1 | ||
| no-power monitor RX | dBm | -40 | |||||
| 3.20 | Assert LOS | LOSA | dBm | -30 | |||
| 3.21 | De-Assert LOS | LOSD | dBm | -14 | |||
| 3.22 | LOS Hysteresis | dB | 0.5 | ||||
Note: Measured with 26.5625Gbd PAM4, PRBS31Q, ER≥3.5dB, BER<2.4E-4
ELECTRIC PORTS DEFINITION
| Parameter | Symbol | Unit | Min. | Typ. | Max. |
| Supply Voltage | VCC | V | 3.14 | 3.3 | 3.46 |
| Power Consumption | P | W | 2.0 | ||
| Transmitter | |||||
| Input Differential Impedance | RIN | Ω | 100 | ||
| Single Ended Data Input Swing | VIN | mVp-p | 100 | 450 | |
| Transmit Disable Voltage | VDIS | V | 2 | VCCHOST | |
| Transmit Enable Voltage | VEN | V | VEE | VEE+0.8 | |
| Transmit Fault Assert Voltage | VFA | V | 2.2 | VCCHOST | |
| Transmit Fault De-Assert Voltage | VFDA | V | VEE | VEE+0.4 | |
| Receiver | |||||
| Single Ended Data Output Swing | VOD | mVp-p | 225 | 450 | |
| LOS Fault | VLOSFT | V | 2.2 | VCCHOST | |
| LOS Normal | VLOSNR | V | VEE | VEE+0.4 | |
ABSOLUTE MAXIMUM RATINGS
Recommended Storage conditions
PIN FUNCTION DEFINITONS
| Pin No. | Symbol | Logic | Description |
| 1,17,20 | VeeT | Connected to signal ground on the host board. | |
| 2 | TX Fault | LVTTL Output | Module transmitter fault output |
| 3 |
TX Disable |
LVTTL Input | Module transmitter disable control |
| 4 | SDA |
LVTTL Input/Output |
2-wire serial interface data |
| 5 | SCL | LVTTL Input/Output | 2-wire serial interface clock |
| 6 | MOD-ABS | Module absent (connected to Module ground) | |
| 7 | RS0 | LVTTL Input | Rate select 0 (Rx) : Low=CDR Bypass; High=CDR Select |
| 8 | LOS | LVTTL Output | Receiver loss of signal |
| 9 | RS1 | LVTTL Input | Rate select 1 (Tx): Low=CDR Bypass; High=CDR Select |
| 10,11,14 | VeeR | Connected to signal ground on the host board. | |
| 12 | RD- | CML Output | Receiver inverted data output, internally AC coupled and terminated. |
| 13 | RD+ | CML Output | Receiver non-inverted data output, internally AC coupled and terminated. |
| 15 | VccR | Receiver Power 3.3V Supply | |
| 16 | VccT | Transmitter Power 3.3V Supply | |
| 18 | TD+ | CML Input | Transmitter non-inverted data input, internally AC coupled and terminated. |
| 19 | TD- | CML Input | Transmitter inverted data Input, internally AC coupled and terminated. |
Oder Information
| Part No. | Description |
| RSFP56-50G0-LR | SFP56 50G 1310nm LR 10KM DDM |
MECHANICAL DRAWINGS
Mechanical Structure
REGULATORY COMPLIANCE
| Feature | Test Method | Performance |
| Electrostatic Discharge (ESD) to the Electrical Pins | MIL-STD-883C Method 3015.7 | Class 1 (> 1500 Volts) |
| Electrostatic Discharge (ESD) Immunity | Variation of IEC 61000-4-2 | LV 4(Air discharge :15KV; Contact discharge:8 KV) |
|
Electromagnetic Interference (EMI) |
CISPR22 ITE Class B EN55022 Class B FCC Class B |
Compliant with standards |
| Immunity | IEC61000-4-3 Class 2 EN55024 | Typically show no measurable effect from a 3V/m field swept from 80 to 1000MHz applied to the transceiver without a chassis enclosure. |
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