Ascent’s SFP28 32G single channel, pluggable fiber-optic transceivers are designed for use in 8G/16G/32G Fibre Channel links up to 28.05 Gb/s data rate with distances up to 100m over multi-mode fiber.
• Up to 28.05 Gb/s bi-directional data links
• Hot-Pluggable SFP28 form factor
• Built-in digital diagnostic functions
• 850 nm VCSEL laser and PIN photo-detector
• Duplex LC receptacle
• Single 3.3V power supply
• Power dissipation < 1W
• RoHS-6 compliant
• Commercial case temperature range: 0°C to 70°C
• Internal CDR on both Transmitter and Receiver channel
Absolute Maximum Ratings
Parameter | Symbol | Min. | Max. | Unit | Note |
Supply Voltage | Vcc | 0 | 3.6 | V | |
Storage Temperature | Ts | ‑40 | +85 | °C | |
Operating Humidity | ‑ | 5 | 85 | % |
General Specifications
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Commercial Temperature | Tc | 0 | +70 | °C | ||
Power Supply Voltage | Vcc | 3.13 | 3.3 | 3.47 | V | |
Power Supply Current | Icc | 300 | mA | |||
Fiber Length on 50/125 μm High‑Bandwidth (OM3) MMF | 150 100 70 | m m m | 1 2 3 | |||
Fiber Length on 50/125 μm High‑Bandwidth (OM4) MMF | 190 125 100 | m m m | 1 2 3 |
Notes:
1. At 8.5 Gb/s fibre channel data rate.
2. At 14.025 Gb/s fibre channel data rate.
3. At 28.05 Gb/s fibre channel data rate.
Optical and Electrical Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note | |
Transmitter | |||||||
Data Rate | BR | 8.5 14.025 28.05 | Gbps | ||||
Centre Wavelength | λc | 840 | 850 | 860 | nm | ||
Spectral Width (RMS) | σ | 0.6 | nm | ||||
Average Output Power | Pavg | ‑8.2 | 2 | dBm | 1 | ||
‑7.8 | 2 | dBm | 2 | ||||
‑6.7 | 2 | dBm | 3 | ||||
Optical Power OMA | POMA | ‑5.2 | dBm | 1 | |||
‑4.8 | dBm | 2 | |||||
‑3.2 | dBm | 3 | |||||
Extinction Ratio | ER | 2 | dB | ||||
Differential Data Input Swing | VIN, PP | 50 | 900 | mV | |||
180 | 700 | mV | |||||
Input Differential Impedance | ZIN | 90 | 100 | 110 | Ω | ||
TX Disable | Disable | 2.0 | Vcc | V | |||
Enable | 0 | 0.8 | V | ||||
TX Fault | Fault | 2.0 | Vcc | V | |||
Normal | 0 | 0.8 | V | ||||
Receiver | |||||||
Data Rate | BR | 8.5 14.025 28.05 | Gbps | 4 | |||
Centre Wavelength | λc | 840 | 850 | 860 | nm | ||
Unstressed Receiver Sensitivity (OMA) | RXsens | ‑11.2 | dBm | 1 | |||
‑10.5 | dBm | 2 | |||||
‑10.2 | dBm | 3 | |||||
Average Receiver Power | RxMAX | 2 | dBm | ||||
Bit Error Rate | BER | E‑12 E‑6 | 5 | ||||
LOS De‑Assert | LOSD | ‑13 | dBm | ||||
LOS Assert | LOSA | ‑30 | dBm | ||||
LOS Hysteresis | 0.5 | dB | |||||
Differential Data Output Swing | Vout.pp | 300 | 850 | mV | |||
LOS | High | 2.0 | Vcc | V | |||
Low | 0 | 0.8 | V |
Notes:
1. At 8.5 Gb/s fibre channel data rate.
2. At 14.025 Gb/s fibre channel data rate.
3. At 28.05 Gb/s fibre channel data rate.
4. 8.5 Gb/s Prbs7 for 8GFC, 14.025 Gb/s Prbs31 for 16GFC, 28.05 Gb/s Prbs31 for 32GFC.
5. For 32GFC with FEC, receiver sensitivity is defined at 10‑6 BER level, not 10‑12 BER level.
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