The 100GBASE-LX4 module is a versatile and high-performance optical transceiver designed to support link lengths of up to 2 km over single-mode fiber (SMF) and up to 100 meters on OM3 multimode fiber (MMF) using a Duplex LC connector. It is designed for a wide range of applications, including data centers and enterprise networking environments where reliable high-speed data transmission is essential. Its ability to operate across both SMF and MMF provides flexibility for network architects, enabling seamless integration into existing infrastructure while meeting the demands of 100G Ethernet applications. This transceiver is a fully integrated 4 x 25.78 Gbps optical module, utilizing advanced optical components to ensure exceptional performance. It incorporates cooled distributed feedback laser diodes (DFB LDs) operating at wavelengths of 1270 nm, 1290 nm, 1310 nm, and 1330 nm. These are paired with high-performance driver integrated circuits (ICs), PIN photodiodes, and clock and data recovery (CDR) ICs that support 25 Gbps electrical interfaces. This combination ensures precise and efficient optical signal transmission, making it well-suited for high-density network environments and demanding data rates. Additionally, the 100GBASE-LX4 module features built-in digital diagnostics monitoring (DDM), which provides access to real-time operating parameters such as temperature, laser bias current, and transmitted/received optical power. This monitoring capability enhances network reliability by enabling proactive maintenance and reducing downtime.
· QSFP28 MSA compliant
· Supports 103.1 Gb/s aggregate bit rate
· 4x25Gb/s electrical interface
· Up to 2km on SMF and 100m on MMF(OM3)
· Hot-pluggable QSFP28 footprint
· LC duplex connector
· Maximum power consumption 3.5 Watts
· Single 3.3V power supply
· Support Digital Diagnostic Monitor interface
· Case operating temperature: 0°C to +70°C
· RoHS compliant
Absolute Maximum Rating
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. | Max. | Unit | Note |
Maximum Supply Voltage | Vcc | 0 | 3.6 | V | |
Storage Temperature | Ts | -40 | 85 | °C | |
Operating Case Temperature | Tcase | -5 | 75 | °C | |
Relative Humidity | RH | 5 | 85 | % | |
Damage Threshold,per Lane | Pdam | 3.6 | dBm |
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Operating Case Temperature | Tcase | 0 | 70 | °C | ||
Supply Voltage | Vcc | 3.135 | 3.3 | 3.465 | V | |
Relative Humidity | RH | 5 | 85 | % | ||
Power Consumption | PD | 3.5 | W | |||
Data Rate (Optical) | DRO | 4*25.78125 | Gbps | |||
Data Rate (Electrical) | DRE | 4*25.78125 | Gbps | |||
Operating Link Distance | LD | SMF:2 MMF:0.1@OM3 | km |
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Transmitter | ||||||
Signaling Speed per Lane | BR | 25.78125 ± 100 ppm | Gbps | |||
Lane Wavelength | λ0 | 1264.5 | 1271 | 1277.5 | nm | |
λ1 | 1284.5 | 1291 | 1297.5 | nm | ||
λ2 | 1304.5 | 1311 | 1317.5 | nm | ||
λ3 | 1324.5 | 1331 | 1337.5 | nm | ||
Side-Mode Suppression Ratio | SMSR | 30 | dB | |||
Total Average Launch Power for SMF | Ptotal | 8.5 | dBm | |||
Total Average Launch Power for MMF | -2.5 | 9.5 | dBm | |||
Average Launch Power per Lane for SMF | Pout | -6.5 | 2.5 | dBm | ||
Average Launch Power per Lane for MMF | -5.0 | 3.5 | dBm | |||
Transmit OMA per Lane for SMF | TxOMA | -4.0 | 2.5 | dBm | ||
Transmit OMA per Lane for MMF | -4.0 | 3.5 | dBm | |||
Launch Power OFF per Lane | POff | -30 | dBm | |||
Transmitter and Dispersion Penalty (TDP), each Lane | TDP | 3 | dB | |||
Extinction Ratio (ER) | ER | 3.5 | dB | |||
RIN20 OMA | RIN | -128 | dB/Hz | |||
Transmitter Eye Mask Definition {X1,X2, X3,Y1, Y2, Y3} | {0.31, 0.40, 0.45, 0.34, 0.38, 0.4} | 1 | ||||
Mask margin | 15 | % | 1 | |||
Receiver | ||||||
Signaling Rate, Each Lane | BR | 10.3125 ± 100 ppm | Gb/s | |||
Receive Wavelength | λ0 | 1264.5 | 1271 | 1277.5 | nm | |
λ1 | 1284.5 | 1291 | 1297.5 | nm | ||
λ2 | 1304.5 | 1311 | 1317.5 | nm | ||
λ3 | 1324.5 | 1331 | 1337.5 | nm | ||
Damage Threshold, each Lane | Pmax | 3.5 | dBm | |||
Average Receive Power per Lane for SMF | -11.5 | 2.5 | dBm | |||
Average Receive Power per Lane for MMF | -8.6 | 3.5 | dBm | |||
Rx Sensitivity (OMA) per Lane for SMF | RSEN | -8.6 | dBm | |||
Rx Sensitivity (OMA) per Lane for MMF | -8.6 | dBm | ||||
Receiver Reflectance | Rfl | -26 | dB | |||
LOS Assert | LOSA | -30 | dBm | |||
LOS De-Assert | LOSD | -12.5 | dBm | |||
LOS Hysteresis | 0.5 | 6 | dB |
Note: Hit ratio 5 x 10−5.
Electrical Interface Characteristics
100GBASE-LX4 Operation (EOL, TOP = 0 to 70 °C ,Vcc = 3.135 to 3.465 V)
Parameter | Symbol | Min | Typ | Max | Unit | Note |
Power Consumption | 3.5 | W | ||||
Supply Current | Icc | 1 | A | |||
Transmitter | ||||||
Data Rate, each Lane | 25.78125 | Gbps | ||||
Differential Voltage Pk-Pk | Vpp | 300 | 850 | mV | ||
Input Differential Impedance | Rin | 100 | Ohm | 1 | ||
Differential Termination Resistance Mismatch | 10 | % | ||||
Receiver | ||||||
Data Rate, each Lane | 25.78125 | Gbps | ||||
Output Differential Impedance | Rout | 100 | Ohm | 1 | ||
Differential Termination Resistance Mismatch | 10 | % | ||||
Differential Output Voltage | Vout, pp | 260 | 850 | mV | 2 |
Notes:
1. Connected directly to TX data input pins. AC coupled there after.
2. Into 100Ω differential termination.
Parameter | Accuracy | Unit |
Case Temperature | ±3 | °C |
Supply Voltage | ±3% | V |
Tx Bias Current | ±10% | mA |
Tx Optical Power | ±3 | dB |
Rx Optical Power | ±3 | dB |
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