The 100G-QSFP28-SR4 is a Four-Channel, Pluggable, Parallel, Fiber-Optic QSFP28 Transceiver for IEEE 802.3bm, 100GBASE SR4 Applications,or 40 Gigabit Ethernet and Infiniband FDR/EDR Applications. The QSFP28 full-duplex optical module offers 4 independent transmit and receive channels, each capable of 26Gbps operation for an aggregate data rate of 104Gbps 70m using OM3 fiber. These 100G-QSFP28-SR4 are designed to operate over multimode fiber systems using 850nm VCSEL laser array. An 11 optical fiber ribbon cable with an MPO/MTPTM connector can be plugged into the QSFP module receptacle. QSFP28 SR4 is one kind of parallel transceiver which provides increased port density and total system cost savings.
100G-QSFP28-SR4 Features
Four-channel full-duplex transceiver modules
Transmission data rate up to 26Gbit/s per channel
Up to 70m on OM3 Multimode Fiber (MMF)and 100m on OM4 MMF
Low power consumption <3.5W
Operating case temperature 0°C to +70°C
3.3V power supply voltage
RoHS 6 compliant
Hot Pluggable QSFP form factor
MPO connector receptacle
Built-in digital diagnostic function
100G-QSFP28-SR4 Applications
IEEE 802.3bm 100GBASE SR4 and 40GBASE SR4
Proprietary High Speed Interconnections
Data center
Absolute Maximum Ratings
The operation in excess of any absolute maximum ratings might cause permanent damage to this module.
Parameter | Symbol | Min | Max | Unit | Note |
Storage Temperature | TST | -40 | 85 | degC | |
Relative Humidity(non-condensing) | RH | 0 | 85 | % | |
Operating Case Temperature | TOPC | 0 | 70 | degC | |
Supply Voltage | VCC | -0.3 | 3.6 | V | |
Input Voltage | Vin | -0.3 | Vcc+0.3 | V |
Recommended Operating Conditions and Supply Requirements
Parameter | Symbol | Min | Typical | Max | Unit |
Operating Case Temperature | TOPC | 0 | 70 | degC | |
Power Supply Voltage | VCC | 3.13 | 3.3 | 3.47 | V |
Power Consumption | – | 3.5 | W | ||
Data Rate | DR | 25.78125 | Gbps | ||
Data Speed Tolerance | ∆DR | -100 | +100 | ppm | |
Link Distance with OM3 fiber | D | 0 | 70 | m |
Optical Characteristics
All parameters are specified under the recommended operating conditions with PRBS31 data pattern unless otherwise specified.
Parameter | Symbol | Min | Typical | Max | Unit | Notes | ||
Transmitter | ||||||||
Center Wavelength | λC | 840 | 850 | 860 | nm | 1 | ||
RMS Spectral Width | λrms | – | 0.65 | nm | 1 | |||
Average Launch Power, each lane | PAVG | -7 | -2.5 | 0 | dBm | |||
Optical Modulation Amplitude | POMA | -5 | -2.5 | 0 | dBm | 1 | ||
2
(OMA) | ||||||||
Difference in Launch Power between any two lanes | Ptx,diff | 4.0 | dB | |||||
Launch Power in OMA minus
Transmitter and Dispersion Penalty (TDP), each Lane |
OMA-TDP | 3.5 | dB | 1 | ||||
Extinction Ratio | ER | 3.5 | dB | |||||
Transmitter Eye Mask Margin | EMM | 10 | % | 2 | ||||
Average Launch Power OFF
Transmitter, each Lane |
Poff | -30 | dBm | |||||
Transmitter Eye Mask
Definition {X1, X2, X3, Y1, Y2, Y3} |
{0.3, 0.38, 0.45, 0.35, 0.41, 0.5} | |||||||
Parameter | Symbol | Min | Typical | Max | Unit | Notes | ||
Receiver | ||||||||
Center Wavelength | λC | 840 | 850 | 860 | nm | |||
Damage Threshold | THd | +3 | dBm | |||||
Overload, each lane | OVL | +2.4 | dBm | |||||
Receiver Sensitivity in OMA, each Lane | SEN | -10.3 | dBm | |||||
Signal Loss Assert Threshold | LOSA | -30 | dBm | |||||
Signal Loss Deassert Threshold | LOSD | -9 | dBm | |||||
LOS Hysteresis | LOSH | 0.5 | 6 | dB | ||||
Optical Return Loss | ORL | -12 | dBm | |||||
Notes:
- Transmitter wavelength, RMS spectral width and power need to meet the OMA minus TDP specs to guarantee link performance.
- The eye diagram is tested with 1000 waveform.
Electrical Specifications
Parameter | Symbol | Min | Typical | Max | Unit |
Differential input impedance | Zin | 90 | 100 | 110 | ohm |
3
Differential Output impedance | Zout | 90 | 100 | 110 | ohm |
Differential input voltage amplitude | ΔVin | 300 | 1100 | mVp-p | |
Differential output voltage amplitude | ΔVout | 500 | 800 | mVp-p | |
Bit Error Rate | BR | E-12 | |||
Input Logic Level High | VIH | 2.0 | VCC | V | |
Input Logic Level Low | VIL | 0 | 0.8 | V | |
Output Logic Level High | VOH | VCC-0.5 | VCC | V | |
Output Logic Level Low | VOL | 0 | 0.4 | V |
Pin Descriptions
PIN | Logic | Symbol | Name/Description | Note |
1 | GND | Ground | 1 | |
2 | CML-I | Tx2n | Transmitter Inverted Data Input | |
3 | CML-I | Tx2p | Transmitter Non-Inverted Data output | |
4 | GND | Ground | 1 | |
5 | CML-I | Tx4n | Transmitter Inverted Data Input | |
6 | CML-I | Tx4p | Transmitter Non-Inverted Data output | |
7 | GND | Ground | 1 | |
8 | LVTLL-I | ModSelL | Module Select | |
9 | LVTLL-I | ResetL | Module Reset | |
10 | VccRx | ﹢3.3V Power Supply Receiver | 2 | |
11 | LVCMOS-I/O | SCL | 2-Wire Serial Interface Clock | |
12 | LVCMOS-I/O | SDA | 2-Wire Serial Interface Data | |
13 | GND | Ground | ||
14 | CML-O | Rx3p | Receiver Non-Inverted Data Output | |
15 | CML-O | Rx3n | Receiver Inverted Data Output | |
16 | GND | Ground | 1 | |
17 | CML-O | Rx1p | Receiver Non-Inverted Data Output | |
18 | CML-O | Rx1n | Receiver Inverted Data Output | |
19 | GND | Ground | 1 | |
20 | GND | Ground | 1 | |
21 | CML-O | Rx2n | Receiver Inverted Data Output | |
22 | CML-O | Rx2p | Receiver Non-Inverted Data Output | |
23 | GND | Ground | 1 | |
24 | CML-O | Rx4n | Receiver Inverted Data Output | 1 |
4
25 | CML-O | Rx4p | Receiver Non-Inverted Data Output | |
26 | GND | Ground | 1 | |
27 | LVTTL-O | ModPrsL | Module Present | |
28 | LVTTL-O | IntL | Interrupt | |
29 | VccTx | +3.3 V Power Supply transmitter | 2 | |
30 | Vcc1 | +3.3 V Power Supply | 2 | |
31 | LVTTL-I | LPMode | Low Power Mode | |
32 | GND | Ground | 1 | |
33 | CML-I | Tx3p | Transmitter Non-Inverted Data Input | |
34 | CML-I | Tx3n | Transmitter Inverted Data Output | |
35 | GND | Ground | 1 | |
36 | CML-I | Tx1p | Transmitter Non-Inverted Data Input | |
37 | CML-I | Tx1n | Transmitter Inverted Data Output | |
38 | GND | Ground | 1 |