Ascent’s QSFP28-100G-LP80 is multi-vendor MSA compatible 100GBASE-ZR4 QSFP28 (Quad Small Form-Factor Pluggable 28) transceiver, operating over a pair of single-mode optical fibers with four independent optical communication lanes separated from each other using LAN WDM technology. This Module has a minimum guaranteed optical budget of 27 dB (with host FEC), which in most cases is enough to reach 80 km distance (with host FEC) and 40 km distance (without host FEC) using a single-mode cable. However, this distance is only an indicative parameter calculated for comfort of identification. Actual distance should be calculated by taking into account minimal optical budget and average attenuation of optical cabling in industry.
• 100GBASE-ZR4 QSFP28
• Multi-vendor MSA compatible
• Tx/Rx Wavelength: 1295.56, 1300.05, 1304.58, 1309.14 nm
• EML-cooled LAN WDM TOSA laser
• Single-mode fiber (SMF)
• Double LC connectors
• 27 dB optical budget (with host FEC)
• Max. distance: 80 km (with host FEC), 40 km (no host FEC)
• 103.125 Gbps data rate
• FEC Forward Error Correction: KR4 FEC Supported
• Supports DDM/DOM
• ≤6.5 W power consumption
• 0 °C to +70 °C temperature range
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. | Typ. | Max. | Unit | Notes |
Maximum Supply Voltage | Vcc | 0 | 3.6 | V | ||
Storage Temperature | Ts | ‑40 | 85 | °C | ||
Relative Humidity | RH | 5 | 85 | % | 1 | |
Damage Threshold, each lane | THd | 6.5 | dBm |
Notes
1. Non‑condensing
Operating Environments
Electrical and optical characteristics below are defined under this operating environment, unless otherwise specified.
Parameter | Symbol | Min. | Typ. | Max. | Unit |
Supply Voltage | Vcc | 3.135 | 3.3 | 3.465 | V |
Case Temperature | Top | 0 | 70 | °C | |
Link Distance with G.652 | 80 | km |
Electrical Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
Power Dissipation | 6.5 | W | ||||
Supply Current | Icc | 1.8759 | A | Steady state | ||
Transmitter | ||||||
Data Rate, each Lane | 25.78125 | Gbps | ||||
Differential Voltage pk‑pk | Vpp | 900 | mV | At 1 MHz | ||
Common Mode Voltage | Vcm | ‑350 | 2850 | mV | ||
Transition Time | Trise/Tfall | 10 | ps | 20 % to 80 % | ||
Differential Termination Resistance Mismatch | 10 | % | ||||
Eye Width | EW15 | 0.46 | UI | |||
Eye Height | EH15 | 95 | mV | |||
Receiver | ||||||
Data Rate, each Lane | 25.78125 | Gbps | ||||
Differential Termination Resistance Mismatch | 10 | % | At 1 MHz | |||
Differential Output Voltage Swing | Vout, pp | 900 | mV | |||
Common Mode Noise, RMS | Vrms | 17.5 | mV | |||
Transition Time | Trise/Tfall | 12 | ps | 20 % to 80 % | ||
Eye Width | EW15 | 0.57 | UI | |||
Eye Height | EH15 | 228 | mV |
Optical Characteristics
100GBASE‑ZR4 Operation (EOL, TOP = 0 to +70 °C, VCC = 3.135 V to 3.465 V)
Parameter | Unit | Min | Typ. | Max. | Notes |
Transmitter | |||||
Signaling Speed per Lane | Gb/s | 25.78125 ± 100 ppm | |||
Transmit Wavelengths | nm | 1294.53 | 1296.59 | 1295.56 nm | |
1299.02 | 1301.09 | 1300.05 nm | |||
1303.54 | 1305.63 | 1304.58 nm | |||
1308.09 | 1310.19 | 1309.14 nm | |||
Side‑Mode Suppression Ratio (SMSR) | dB | 30 | |||
Total Launch Power (Ptotal) | dBm | 8.0 | 12.5 | ||
Average Launch Power, each Lane (Peach) | dBm | 2.0 | 6.5 | ||
Average Launch Power of OFF Transmitter, each Lane | dBm | ‑30 | |||
Optical Extinction Ratio (ER) | dB | 8 | |||
RIN OMA | dB/Hz | ‑130 | |||
Optical Return Loss Tolerance | dB | 20 | |||
Transmitter Reflectance | dB | ‑12 | |||
Transmitter Eye Mask Definition {X1, X2, X3, Y1, Y2, Y3} | IEEE 802.3 Clause 88 100Gbase‑ZR4 + KR4‑FEC, {0.25, 0.4, 0.45, 0.25, 0.28, 0.4} | 1 | |||
Mask Margin | % | 5 | |||
Receiver | |||||
Signaling Speed per Lane | Gb/s | 25.78125 ± 100 ppm | |||
Receiver Wavelengths |
nm | 1294.53 | 1296.59 | ||
1299.02 | 1301.09 | ||||
1303.54 | 1305.63 | ||||
1308.09 | 1310.19 | ||||
Damage Threshold (Rdam) | dBm | 6.5 | |||
Average Receiver Power, each Lane | dBm | ‑28 | ‑7 | ||
Receiver Power, each Lane (OMA) | dBm | ‑7 | |||
Receiver Sensitivity, each Lane (AOP) | dBm | ‑28 | 1 | ||
Receiver Sensitivity, each Lane (OMA) | dBm | ‑26.4 | 1 | ||
Receiver 3 dB Electrical Upper Cutoff Frequency, each Lane | GHz | 31 | |||
Damage Threshold, each Lane (Rdam) | dBm | 6.5 | |||
Receiver Reflectance | dB | ‑26 | |||
LOS Assert | dBm | ‑40 | |||
LOS De‑assert | dBm | ‑29 | |||
LOS Hysteresis | dB | 0.5 |
Notes
1. Sensitivity is specified at BER@5E‑5 with FEC, FEC must open to guarantee 80 km transmission.
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