Ascent’s SFP28 25Gb/s transceiver is an integrated fiber optic transceiver that provides a high-speed serial link at signaling rates up to 25.78 Gb/s. It is a single- channel, pluggable, fiber-optic module for short-range data communication and interconnect Ethernet applications. This module is designed to operate over multimode fiber systems using a nominal wavelength of 850nm. It has a transmission distance of up to 70 m on OM3 and 100 m on OM4 multi-mode fibers. The optical interface uses duplex LC receptacle. This module incorporates Gigalight Technologies proven circuit and VCSEL technology to provide reliable long life, high performance, and consistent service. The SFP28-25LP-85-01 module complies with SFF-8431 and SFF 8472 standards. It features a metal enclosure for lower EMI and utilizes a 2-wire interface that is compliant with the serial communication protocol as defined in the SFP+ MSA. It also provides a unique integrated digital diagnostic monitoring interface, allowing for real-time access to device operating parameters. This module is hot-pluggable.
· 25Gbps serial optical interface
· 850nm VCSEL transmitter and GaAs PIN PD receiver
· Rate Adaptation
· Operating Temperature Range:
Commercial:0°C to +70°C
Industrial:-40°C to +85°C
· Maximum link length of 70m via OM3 multimode Fiber (MMF)
· Maximum link length of 100m via OM4 multimode Fiber (MMF)
Parameter | Symbol | Min. | Typ. | Max. | Unit |
Storage Temperature | Ts | -40 | - | 85 | °C |
Relative Humidity | RH | 0 | 85 | % |
Recommended Operating Conditions
Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
Case Temperature | Tc | 0 | - | 70 | °C | 1 |
-40 | - | 85 | 2 | |||
Power Supply Voltage | VCC | 3.15 | 3.3 | 3.45 | V | |
Bit Rate | BR | 25.78125 | Gbps |
Note1, 2: See order information
Parameter Transmitter | Symbol
| Min.
| Typ.
| Max.
| Unit | Notes
|
Center Wavelength | λ | 840 | 860 | nm | ||
RMS Spectral Width | Pm | 0.6 | nm | |||
Average Optical Power | Pavg | -5 | 2.4 | dBm | ||
Optical Modulation Amplitude | OMA | -5 | 3 | dBm | ||
Average Launch Power of OFF Transmitter | Poff | 0.6 | nm | |||
Extinction Ratio | ER | 3 | dB | |||
Optical Return Loss Tolerance | 12 | dB | ||||
Receiver | ||||||
Center Wavelength | λ | 840 | 850 | 860 | nm | |
Damage Threshold | 3.4 | dBm | ||||
Receive Power Overload | 2.4 | dBm | ||||
Receiver Reflectance | -12 | dBm | ||||
Receiver Sensitivity | SENS | -5 | dBm | 1 | ||
Receiver Sensitivity | SENS | -10 | dBm | 2 | ||
LOS Assert | LOSA | -30 | dBm | |||
LOS De-assert | LOSD | -13 | dBm | |||
LOS Hysteresis | LOSH | 0.5 | dB |
Note:
1. Measured with a 25.78125G, PRBS-31 NRZ, ER>3.5dB, BER<1E-12.
2. Measured with a 25.78125G, PRBS-31 NRZ, ER>3.5dB, BER<5E-5.
Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
Power Consumption | 1 | W | ||||
Supply Current | Icc | 100 | 300 | mA |
Digital Diagnostics
Parameter | Accuracy | Unit |
Internally Measured Transceiver Temperature | +/-3 | °C |
Internally Measured Transceiver Supply Voltage | +/-3 | % |
Measured Tx bias Current | +/-10 | % |
Measured Tx Output Power | +/-3 | dB |
Measured Rx Received Average Optical Power | +/-3 | dB |
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