- FIBER OPTIC TRANSCEIVERS >800G & 400G Transceivers >400G OSFP SR8 100m Transceiver
400G OSFP SR8 100m Transceiver
Ascent’s 400Gb/s Octal Small Form-factor Pluggable (OSFP) full-duplex optical module offers 8 independent transmit and receive channels, each capable of 53.125Gb/s operation for an aggregate data rate of 400Gb/s on 100 meters of OM3 multi-mode fiber. An optical fiber cable with an MTP/MPO-16 connector can be plugged into the OSFP SR8 module receptacle. Proper alignment is ensured by the guide pins inside the receptacle. Electrical connection is achieved through an OSFP MSA-compliant edge type connector. The central wavelengths of all the 8 parallel lanes are 850nm. It contains an optical MPO-16 connector for the optical interface and a 60-pin connector for the electrical interface. Host FEC is required to support up to 100m OM3 multi-mode fiber transmission. The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the OSFP Multi-Source Agreement (MSA). It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference.
· OSFP MSA compliant
· 8 parallel lanes on 850nm center wavelength
· Compliant to IEEE 802.3bs Specification
· Up to 100m transmission on multi-mode fiber (MMF) OM3 with FEC
· Operating case temperature: 0°C to 70°C
· 8x53.125Gb/s electrical interface (400GAUI-8)
· Data Rate 53.125Gbps (PAM4) per channel.
· Maximum power consumption 12W
· MPO-16 connector
· RoHS compliant
Absolute Maximum Ratings
Parameter | Symbol | Min. | Max. | Unit |
Storage Temperature | TS | -40 | 85 | °C |
Operating Case Temperature | TOP | 0 | 70 | °C |
Power Supply Voltage | VCC | -0.5 | 3.6 | V |
Relative Humidity (non-condensation) | RH | 0 | 85 | % |
Recommended Operating Conditions and Power Supply Requirements
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Operating Case Temperature | TOP | 0 | 70 | °C | ||
Power Supply Voltage | VCC | 3.135 | 3.3 | 3.465 | V | |
Data Rate, each Lane | 26.5625 | GBd | PAM4 | |||
Data Rate Accuracy | -100 | 100 | ppm | |||
Pre-FEC Bit Error Ratio | 2.4x10-4 | |||||
Post-FEC Bit Error Ratio | 1x10-12 | 1 | ||||
Link Distance | D | 0.5 | 100 | m | 2 |
Notes:
1. FEC provided by host system.
2. FEC required on host system to support maximum distance.
Electrical Characteristics
The following electrical characteristics are defined over the Recommended Operating Environment unless otherwise specified.
Parameter | Test Point | Min. | Typ. | Max. | Unit | Note |
Power Consumption | 12 | W | ||||
Supply Current | Icc | 3.63 | A | |||
Transmitter (each Lane) | ||||||
Signaling Rate, each Lane | TP1 | 26.5625 ± 100 ppm | GBd | |||
Differential pk-pk Input Voltage Tolerance | TP1a | 900 | mVpp | 1 | ||
Differential Termination Mismatch | TP1 | 10 | % | |||
Differential Input Return Loss | TP1 | EEE 802.3-2015 Equation (83E-5) | dB | |||
Differential to Common Mode Input Return Loss | TP1 | EEE 802.3-2015Equation (83E-6) | dB | |||
Module Stressed Input Tolerance | TP1a | See IEEE 802.3bs 120E.3.4.1 | 2 | |||
Single-Ended Voltage Tolerance range(Min) | TP1a | -0.4 to 3.3 | V | |||
DC Common Mode Input Voltage | TP1 | -350 | 2850 | mV | 3 | |
Receiver (each Lane) | ||||||
Signaling Rate, each Lane | TP4 | 26.5625 ± 100 ppm | GBd | |||
Differential Peak-to-Peak Output Voltage | TP4 | 900 | mVpp | |||
AC Common Mode Output Voltage, RMS | TP4 | 17.5 | mV | |||
Differential Termination Mismatch | TP4 | 10 | % | |||
Differential Output Return Loss | TP4 | IEEE 802.3-2015 Equation (83E-2) | ||||
Common to Differential Mode Conversion Return Loss | TP4 | IEEE 802.3-2015 Equation (83E-3) | ||||
Transition Time, 20% to 80% | TP4 | 9.5 | ps | |||
Near-End Eye Symmetry Mask Width (ESMW) | TP4 | 0.2 65 | UI | |||
Near-End Eye Height, Differential | TP4 | 70 | mV | |||
Far-End Eye Symmetry Mask Width (ESMW) | TP4 | 0.2 | UI | |||
Far-End Eye Height, Differential | TP4 | 30 | mV | |||
Far-End Pre-Cursor ISI Ratio | TP4 | -4.5 | 2.5 | % | ||
Common Mode Output Voltage (Vcm) | TP4 | -350 | 2850 | mV | 3 | |
Notes:
1. With the exception to IEEE 802.3bs 120E.3.1.2 that the pattern is PRBS31Q or scrambled idle.
2. Meets BER specified in IEEE 802.3bs 120E.1.1.
3. DC common mode voltage generated by the host. Specification includes effects of ground offset voltage.
Optical Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Transmitter | ||||||
Center Wavelength | λC | 840 | 850 | 860 | nm | |
Data Rate, each Lane | 26.5625± 100 ppm | GBd | ||||
Modulation Format | PAM4 | |||||
RMS Spectral Width | ∆λrms | 0.6 | nm | Modulated | ||
Average Launch Power, each Lane | PAVG | -6.5 | 4 | dBm | 1 | |
Outer Optical Modulation Amplitude (OMAouter), each Lane | POMA | -4.5 | 3 | dBm | 2 | |
Launch Power in OMAouter minus TDECQ, each Lan | -5.9 | dB | ||||
Transmitter and Dispersion Eye Clouser for PAM4, each Lane | TDECQ | 4.5 | dB | |||
Extinction Ratio | ER | 3 | dB | |||
Optical Return Loss Tolerance | TOL | 12 | dB | |||
Average Launch Power of OFF Transmitter, each Lane | Poff | -30 | dBm | |||
Encircled flux | ≥ 86% at 19 μm ≤ 30% at 4.5 μm | |||||
Receiver | ||||||
Center wavelength | λ | 840 | 850 | 860 | nm | |
Data Rate, each Lane | 26.5625 ± 100 ppm | GBd | ||||
Modulation Format | PAM4 | |||||
Damage Threshold, each Lane | THD | 5 | dBm | 3 | ||
Average Receive Power, each Lane | -7.9 | 4 | dBm | 4 | ||
Receive Power (OMAouter), each Lane | 3 | dBm | ||||
Receiver Sensitivity (OMAouter), each Lane | SEN | -6.5 | dBm | 5 | ||
Stressed Receiver Sensitivity (OMAouter), each Lane | SRS | -3 | dBm | 6 | ||
Receiver Reflectance | RR | -12 | dB | |||
LOS Assert | LOSA | -30 | dBm | |||
LOS De-assert | LOSD | -12 | dBm | |||
LOS Hysteresis | LOSH | 0.5 | dB | |||
Stressed Conditions for Stress Receiver Sensitivity (Note 7) | ||||||
Stressed Eye Closure for PAM4 (SECQ), Lane under Test | 4 | dB | ||||
OMAouter of each aggressor lane | 3 | dBm | ||||
Notes:
1. Average launch power, each lane (min) is informative and not the principal indicator of signal strength. A transmitter with launch power below this value cannot be compliant; however, a value above this does not ensure compliance.
2. Even if the TDECQ < 1 dB, the OMAouter (min) must exceed the minimum value specified here.
3. The receiver shall be able to tolerate, without damage, continuous exposure to an optical input signal having this average power level.
4. Average receive power, each lane (min) is informative and not the principal indicator of signal strength. A received power below this value cannot be compliant; however, a value above this does not ensure compliance.
5. Receiver Sensitivity OMAouter, each lane (max) is informative and is defined for a BER of 2.4x10-4.
6. Measured with conformance test signal at receiver input for the BER of 2.4x10-4.
7. These test conditions are for measuring stressed receiver sensitivity. They are not characteristics of the receiver.
Digital Diagnostic Functions
The following digital diagnostic characteristics are defined over the normal operating conditions unless otherwise specified.
Parameter | Symbol | Min. | Max. | Unit | Note |
Temperature Monitor Absolute Error | DMI_Temp | -3 | 3 | °C | Over operating temperature range |
Supply Voltage Monitor Absolute Error | DMI _VCC | -0.1 | 0.1 | V | Over full operating range |
Channel RX Power Monitor Absolute Error | DMI_RX_Ch | -2 | 2 | dB | 1 |
Channel Bias Current Monitor | DMI_Ibias_Ch | -10% | 10% | mA | |
Channel TX Power Monitor Absolute Error | DMI_TX_Ch | -2 | 2 | dB | 1 |
Notes:
Due to measurement accuracy of different single mode fibers, there could be an additional ±1 dB fluctuation, or a ±3 dB total accuracy.
Voltage Zones
Mechanical Outline
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