Q2B49040C00F000
MSA 100GBase-BX ER1 PAM4 QSFP28
- Transceiver Single Lambda (SMF, 1304.58nmTx/1309.14nmRx, 40km, LC,
DOM)
- -
Product Description
This MSA Compliant QSFP28 transceiver provides 100GBase-BX ER1 throughput up to 40km over single-mode
fiber (SMF) using a wavelength of 1304.58nmTx/1309.14nmRx via an LC connector. It is built to MSA standards
and is uniquely serialized and data-traffic and application tested to ensure that they will integrate into your
network seamlessly. Digital optical monitoring (DOM) support is also present to allow access to real-time
operating parameters. We stand behind the quality of our products and proudly offer a limited lifetime warranty.
Skylane’s transceivers are RoHS compliant and lead-free.
Features:
• SFF-8636 Rev. 2.10a Compliant
• 100G Lambda MSA 100G-ER1 Specification Compliant
• QSFP28 MSA Compliant
• Bidi LC Receptacles
• Commercial Temperature 0 to 70 Celsius
• Supports 100Gbps with 4x25G Electrical Interface
• Power Dissipation:
• Single 3.3V Power Supply
• RoHS Compliant and Lead Free
• SMF with Inbuild KP4 FEC
Applications:
• 100GBase Ethernet
• Datacenter
For your product safety, please read the following information carefully before any manipulation of the transceiver:
ESD
This transceiver is specified as ESD threshold 1kV for SFI pins and 2kV for all others electrical input pins, tested per MIL-STD-883G, Method
3015.4 /JESD22-A114-A (HBM). However, normal ESD precautions are still required during the handling of this module.
LASER SAFETY
This is a Class1 Laser Product according to IEC 60825-1:2007. This product complies with 21 CFR 1040.10 and 1040.11 except for deviations
pursuant to Laser Notice No. 50, dated (June 24, 2007).
The optical ports of the module need to be terminated with an optical connector or with a dust plug in order to avoid contamination.
Skylane Optics Visit www.skylaneoptics.com for more connectivity solutions | Rev. 031325
Absolute Maximum Ratings
Parameter Symbol Min. Typ. Max. Unit Notes
Maximum Supply Voltage Vcc -0.5 3.6 V
Storage Temperature Tstg -40 85 o
C
Maximum Operating Case Temperature Tc -5 75 o
C
Recommended Operating Case Temperature Tc 0 70 o
C 1
Operating Relative Humidity RH 5 85 %
Notes:
1. The position of case temperature measurement is shown in the Mechanical Specifications section.
2. Exceeding the Absolute Maximum Ratings table may cause permanent damage to the device. This is just
an emphasized rating and does not involve the functional operation of the device that exceeds the
specifications of this technical specification under these or other conditions. Long-term operation under
Absolute Maximum Ratings will affect the reliability of the device.
Electrical Characteristics
Parameter Symbol/ Min. Typ. Max. Unit Notes
Test Point
Power Supply Voltage Vcc 3.135 3.3 3.465 V
Power Supply Noise 66 mVp-p 1
Power Consumption 4.5 W
Total Power Supply Current 1298 mA
Internal AC Coupling Capacitors 0.1 µF
Electrical Signal Rate 25.78125 Gbps
High-Speed Electrical Input Characteristics (Transmitter)
Differential Pk-Pk Input Voltage Tolerance TP1a 900 mVp-p
Differential Input Impedance TP1 90 100 110 Ω
Output Rise/Fall Time TP1a 10 ps 2
Eye Width TP1a 0.46 UI 3
Eye Heigh Differential TP1a 95 mV 3
DC Common-Mode Voltage (Vcm) TP1 -350 2850 mV 4
High-Speed Electrical Output Characteristics (Receiver)
Receiver Differential Data Output Load 100 Ω
Differential Pk-Pk Output Voltage TP4 900 mVp-p
Differential Output Impedance TP4 90 100 110 Ω
Output Rise/Fall Time TP4 12 ps 2
Eye Width TP4 0.57 UI 3
Eye Height Differential TP4 228 mV 3
DC Common-Mode Voltage (Vcm) TP4 -350 2850 mV 4
Notes:
1. Power supply noise is defined as the peak-to-peak noise amplitude over the frequency range at the host
supply side of the recommended power supply filter with the module and recommended filter in place.
Voltage levels including peak-to-peak noise are limited to the recommended operating range of the
associated power supply.
2. 20-80%.
3. 1E-15.
4. Vcm is generated by the host. Specification includes effects of ground offset voltage.
Optical Characteristics
Parameter Symbol Min. Typ. Max. Unit Notes
Optical Signal Rate 53.125 Gbaud
Fiber Length (9µm SMF) 40 km 1
Transmitter @TP2 Test Point
Signaling Speed 53.125 Gbaud
Modulation Format PAM4
Center Wavelength λC 1304.06 1304.58 1305.1 nm
Side-Mode Suppression Ratio SMSR 30 dB
Extinction Ratio ER 5 dB
Outer Optical For TDECQ<1.4dB TxOMA 4.7 7.9 dBm
Modulation
For 1.4dB≤TDECQ≤3.9dB TxOMA 3.3+TDECQ dBm
Amplitude
Transmit Average TxAVG 1.7 7.1 dBm 2
Transmitter and Dispersion Eye Closure TDECQ 3.9 dB
Launch Power of Off Transmitter Per Lane -15 dBm
Relative Intensity Noise RIN -136 dB/Hz
Optical Return Loss Tolerance 15 dB 3
Receiver @TP3 Test Point
Signaling Speed 53.125 Gbaud
Center Wavelength λC 1308.61 1309.14 1309.66 nm
Damage Threshold Rxdmg -2.4 dBm
Receive Power (OMAouter) RxOMA -2.6 dBm
Average Receive Power RxAVG -16 -3.4 dBm
Receiver For TECQ<1.4dB SenOMA -13.8 dBm 4
Sensitivity
For 1.4dB≤TECQ≤3.9dB SenOMA TECQ-15.2 dBm 4
(OMAouter)
Stressed Receiver Sensitivity SRS -11.3 dBm
Receiver Reflectance -26 dB
LOS Assert LOSA -26 dBm
LOS De-Assert LOSD -17 dBm
Notes:
1. 9µm SMF. The maximum link distance is based on an allocation of 1dB of attenuation and 3dB total
connection and splice loss. The loss of a single connection shall not exceed 0.5dB.
2. Average launch power (minimum) 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.
3. Transmitter reflectance is defined looking into the transmitter.
4. Sensitivity is specified at 2.4x10-4 BER with PRBS31Q.
Pin Descriptions
Pin Logic Symbol Name/Description Plug Notes
Sequence
1 GND Module Ground. 1 1
2 CML-I Tx2- Transmitter Inverted Data Input. 3
3 CML-I Tx2+ Transmitter Non-Inverted Data Input. 3
4 GND Module Ground. 1 1
5 CML-I Tx4- Transmitter Inverted Data Input. 3
6 CML-I Tx4+ Transmitter Non-Inverted Data Input. 3
7 GND Module Ground. 1 1
8 LVTTL-I ModSelL Module Select. 3
9 LVTTL-I ResetL Module Reset. 3
10 VccRx +3.3V Receiver Power Supply. 2 2
11 LVCMOS-I/O SCL 2-Wire Serial Interface Clock. 3
12 LVCMOS-I/O SDA 2-Wire Serial Interface Data. 3
13 GND Module Ground. 1 1
14 CML-O Rx3+ Receiver Non-Inverted Data Output. 3
15 CML-O Rx3- Receiver Inverted Data Output. 3
16 GND Module Ground. 1 1
17 CML-O Rx1+ Receiver Non-Inverted Data Output. 3
18 CML-O Rx1- Receiver Inverted Data Output. 3
19 GND Module Ground. 1 1
20 GND Module Ground. 1 1
21 CML-O Rx2- Receiver Inverted Data Output. 3
22 CML-O Rx2+ Receiver Non-Inverted Data Output. 3
23 GND Module Ground. 1 1
24 CML-O Rx4- Receiver Inverted Data Output. 3
25 CML-O Rx4+ Receiver Non-Inverted Data Output. 3
26 GND Module Ground. 1 1
27 LVTTL-O ModPrsL Module Present. 3
28 LVTTL-O IntL/RxLOSL Interrupt. Optionally configurable as RxLOSL via the 3
management interface (SFF-8636).
29 VccTx +3.3V Transmitter Power Supply. 2 2
30 Vcc1 +3.3V Power Supply. 2 2
31 LVTTL-I LPMode/TxDis Low-Power Mode. Optionally configurable as TxDis via the 3
management interface (SFF-8636).
32 GND Module Ground. 1 1
33 CML-I Tx3+ Transmitter Non-Inverted Data Input. 3
34 CML-I Tx3- Transmitter Inverted Data Input. 3
35 GND Module Ground. 1 1
36 CML-I Tx1+ Transmitter Non-Inverted Data Input. 3
37 CML-I Tx1- Transmitter Inverted Data Input. 3
38 GND Module Ground. 1 1
Notes:
1. GND is the symbol for signal and supply (power) common for the module. All are common within the
module, and all module voltages are referenced to this potential unless otherwise noted. Connect them
directly to the host board signal-common ground plane.
2. VccRx, Vcc1, and VccTx are the receiving and transmission power suppliers and are applied concurrently.
VccRx, Vcc1, and VccTx are internally connected within the module in any combination. Vcc contacts in
SFF-8662 and SFF-8672 each have a steady state current rating of 1A.
QSFP28 Transceiver Electrical Pad Layout
Host Board Power Supply Filter
Notes:
1. During power transient events, the host should ensure that any neighboring modules sharing the same
supply stay within their specified supply voltage limits. The host should also ensure that the intrinsic
noise of the power rail is filtered in order to guarantee the correct operation of the optical modules.
Transceiver Block Diagram
Notes:
1. The transmitter path of the transceiver contains a 4x25Gbps CAUI-4 electrical input, integrated electrical
multiplexer, EML driver, EML laser, and diagnostic monitor. The integrated electrical multiplexer
converts 4 channels of 25Gbps (NRZ) electrical input data to 1 channel of 100Gbps (PAM4) optical signal.
2. The receiver path of the transceiver contains an APD, trans-impedance amplifier (TIA), integrated de-
multiplexer, and 4x25Gbps CAUI-4 compliant electrical output block. The integrated de-multiplexer
converts 1 channel of 100Gbps (PAM4) optical signal to 4 channels of 25Gbps (NRZ) electrical output
data.
Application Reference Diagram
Notes:
1. Only one channel “i” (i = 1, 2, 3, 4) shown for simplicity.
2. The interface between the QSFP28 module and the ASIC/SerDes is shown above. The high-speed signal
lines are internally AC coupled, and the electrical inputs are internally terminated to 100Ω differential.
All transmitter and receiver electrical channels are compliant to CAUI-4 specification per IEEE 802.3cd.
3. The module has the following low-speed signals for control and status: ModSelL, ResetL, LPMode/TxDis,
ModPrsL, and IntL/RxLOSL. In addition, there is an industry-standard 2-wire serial interface scaled for
3.3V LVTTL. The definition of control signal interface and the registers of the serial interface memory are
further defined in this document.
4. Exposure to current urges and overvoltage events can cause immediate damage to the transceiver
module. Observe the precautions for normal operation of electrostatic discharge-sensitive equipment.
Attention should also be taken to restrict exposure to the conditions defined in the Absolute Maximum
Ratings. Optical connectors will be exposed if the port plug is not inserted, so always pay attention to
protection. Each module is equipped with a port guard plug to protect the optical ports. The protective
plug shall always be in place whenever the optical fiber is not inserted. Before inserting the optical fiber,
it is recommended to clean the end of the optical fiber connector to avoid contamination of the module
optical port due to a dirty connector. If contamination occurs, use standard LC port cleaning methods.
Mechanical Specifications
Notes:
1. All dimensions are in mm.
2. Unmarked tolerance complies with GB/T1804-M.
Case Temperature Measurement Point
Notes:
1. All dimensions are in mm.
2. The above picture shows the location of the hottest spot for measuring module case temperature. In
addition, the Digital Diagnostic Monitoring (DDM) temperature is also calibrated to this spot.
Module Optical Interface (Looking into the Optical Port)
About Skylane Optics
Skylane is a leading provider of transceivers for optical communication.
We offer an extensive portfolio for the enterprise, access, datacenter and
metropolitan fiber optical market as well as for smart home applications and
home networks.
We cover the European, South American and North American market with a strong
partner network and have offices in Belgium, Brazil, Sweden and USA.
Our offerings are characterized by high quality and performance. In combination
with our strong technical support, we enable our customers to build cost
optimized network solutions.
We offer an extensive range of high-quality products including transceivers
(Optical and copper), Active Optical Cable (AOC), Direct Attach Cable (DAC),
Mux/Demux, Coding Box.
