100G QSFP28 LR4 Optical Transceiver Module QSFP28

100G QSFP28 LR4 Optical Transceiver Module QSFP28
100G QSFP28 LR4 Optical Transceiver Module
QSFP28-100G-LR4-NC
The Prolabs 100G QSFP28 product is a 100Gb/s transceiver module designed for optical communication
applications compliant to 100GBASE-LR4 of the IEEE P802.3ba standard. The module converts 4 input
channels of 25Gb/s electrical data to 4 channels of LAN WDM optical signals and then multiplexes them
into a single channel for 100Gb/s optical transmission. Reversely on the receiver side, the module demultiplexes a 100Gb/s optical input into 4 channels of LAN WDM optical signals and then converts them to
4 output channels of electrical data.
The central wavelengths of the 4 LAN WDM channels are 1295.56, 1300.05, 1304.58 and 1309.14 nm as
members of the LAN WDM wavelength grid defined in IEEE 802.3ba. The high performance cooled LAN
WDM EA-DFB transmitters and high sensitivity PIN receivers provide superior performance for 100Gigabit
Ethernet applications up to 10km links and compliant to optical interface with IEEE802.3ba Clause 88
100GBASE-LR4 requirements.
The product is designed with form factor, optical/electrical connection and digital diagnostic interface
according to the QSFP+ Multi-Source Agreement (MSA). It has been designed to meet the harshest
external operating conditions including temperature, humidity and EMI interference.
Features

Hot pluggable QSFP28 MSA form factor

Compliant to IEEE 802.3ba 100GBASE-LR4

Up to 10km reach for G.652 SMF

Single +3.3V power supply

Operating case temperature: 0~70oC

Transmitter: cooled 4x25Gb/s LAN WDM EML TOSA (1295.56, 1300.05, 1304.58, 1309.14nm)

Receiver: 4x25Gb/s PIN ROSA

4x28G Electrical Serial Interface (CEI-28G-VSR)

Maximum power consumption 4.0W

Duplex LC receptacle
Applications

100GBASE-LR4 Ethernet Links

Infiniband QDR and DDR interconnects

Client-side 100G Telecom connections
Transceiver Block Diagram
Figure 1. Transceiver Block Diagram
Pin Assignment and Description
MSA compliant Connector
Pin Definition
PIN
Logic
1
Symbol
Name/Description
GND
Ground
2
CML-I
Tx2n
Transmitter Inverted Data Input
3
CML-I
Tx2p
Transmitter Non-Inverted Data output
GND
Ground
4
5
CML-I
Tx4n
Transmitter Inverted Data Input
6
CML-I
Tx4p
Transmitter Non-Inverted Data output
GND
Ground
7
8
LVTLL-I
ModSelL
Module Select
9
LVTLL-I
ResetL
Module Reset
VccRx
+3.3V Power Supply Receiver
10
11
LVCMOS-I/O
SCL
2-Wire Serial Interface Clock
12
LVCMOS-I/O
SDA
2-Wire Serial Interface Data
GND
Ground
13
14
CML-O
Rx3p
Receiver Non-Inverted Data Output
15
CML-O
Rx3n
Receiver Inverted Data Output
GND
Ground
16
Notes
1
1
1
2
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
GND
Ground
1
1
23
24
CML-O
Rx4n
Receiver Inverted Data Output
25
CML-O
Rx4p
Receiver Non-Inverted Data Output
GND
Ground
26
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
LPMode
Low Power Mode
GND
Ground
31
LVTTL-I
32
33
CML-I
Tx3p
Transmitter Non-Inverted Data Input
34
CML-I
Tx3n
Transmitter Inverted Data Output
GND
Ground
35
1
1
36
CML-I
Tx1p
Transmitter Non-Inverted Data Input
37
CML-I
Tx1n
Transmitter Inverted Data Output
GND
Ground
38
1
Notes:
1. GND is the symbol for signal and supply (power) common for the QSFP28 module. All are common
within the module and all module voltages are referenced to this potential unless otherwise noted.
Connect these directly to the host board signal common ground plane.
2.
VccRx, Vcc1 and VccTx are the receiving and transmission power suppliers and shall be applied
concurrently. Recommended host board power supply filtering is shown in Figure 3 below. Vcc Rx, Vcc1
and Vcc Tx may be internally connected within the module in any combination. The connector pins are
each rated for a maximum current of 1000mA.
Recommended Power Supply Filter
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
Max
Units
Storage Temperature
TS
-40
85
degC
Operating Case Temperature
TOP
0
70
degC
Power Supply Voltage
VCC
-0.5
3.6
V
Relative Humidity (non-condensation)
RH
0
85
%
Damage Threshold, each Lane
THd
5.5
Notes
dBm
Recommended Operating Conditions and Power Supply Requirements
Parameter
Symbol
Min
Operating Case Temperature
TOP
0
Power Supply Voltage
VCC
3.135
Data Rate, each Lane
Typical
3.3
Max
Units
70
degC
3.465
V
25.78125
Gb/s
Control Input Voltage High
2
Vcc
V
Control Input Voltage Low
0
0.8
V
0.002
10
km
Link Distance with G.652
D
Electrical Characteristics
The following electrical characteristics are defined over the Recommended Operating Environment unless
otherwise specified.
Parameter
Symbol
Min
Typical
Power Consumption
Supply Current
Transceiver
Icc
Power-on
Initialization Time
Max
Units
4.0
W
1.21
A
2000
ms
Notes
1
Transmitter (each Lane)
Referred
Single-ended
Input
-0.3
Voltage Tolerance (Note 2)
4.0
V
to TP1
signal
common
AC Common Mode Input
15
Voltage Tolerance
Differential Input Voltage
50
Swing Threshold
Differential Input Voltage
Swing
Vin,pp
190
700
mV
RMS
mVp
LOSA
p
Threshold
mVp
p
Differential
Input
Zin
Impedance
90
100
110
Ohm
Receiver (each Lane)
Single-ended
Referred
Output
-0.3
Voltage
AC
4.0
V
to signal
common
Common
Mode
7.5
Output Voltage
Differential
Output
Voltage Swing
Differential
Vout,pp
300
Zout
90
Output
Impedance
mV
mVp
850
100
RMS
p
110
Ohm
Notes:
1. Power-on Initialization Time is the time from when the power supply voltages reach and remain above
the minimum recommended operating supply voltages to the time when the module is fully functional.
2. The single ended input voltage tolerance is the allowable range of the instantaneous input signals.
Optical Characteristics
QSFP28 100GBASE-LR4
Parameter
Lane Wavelength
Symbol
Min
Typical
Max
Unit
L0
1294.53
1295.56
1296.59
nm
L1
1299.02
1300.05
1301.09
nm
L2
1303.54
1304.58
1305.63
nm
L3
1308.09
1309.14
1310.19
nm
Notes
Transmitter
Side Mode Suppression Ratio
Total Average Launch Power
Average Launch Power,
each Lane
OMA, each Lane
Difference in Launch Power
between any Two Lanes (OMA)
SMSR
30
PT
dB
10.5
dBm
PAVG
-4.3
4.5
dBm
POMA
-1.3
4.5
dBm
5
dB
Ptx,diff
Launch Power in OMA minus
Transmitter
and
Dispersion
-2.3
dBm
Penalty (TDP), each Lane
TDP, each Lane
TDP
2.2
dB
1
Extinction Ratio
ER
RIN20OMA
RIN
-130
dB/Hz
Optical Return Loss Tolerance
TOL
20
dB
RT
-12
dB
Transmitter Reflectance
Transmitter, each Lane
dB
{0.25, 0.4, 0.45, 0.25, 0.28,
Eye Mask{X1, X2, X3, Y1, Y2, Y3}
Average Launch Power OFF
4
2
0.4}
Poff
-30
dBm
Receiver
Damage Threshold, each Lane
THd
5.5
dBm
Total Average Receive Power
10.5
dBm
4.5
dBm
4.5
dBm
-8.6
dBm
-6.8
dBm
RR
-26
dB
Prx,diff
5.5
dB
Average Receive Power, each
-10.6
Lane
Receive Power (OMA), each
Lane
Receiver
Sensitivity
(OMA),
each Lane
Stressed
Receiver
SEN
Sensitivity
(OMA), each Lane
Receiver Reflectance
Difference in Receive Power
between any Two Lanes (OMA)
LOS Assert
LOSA
-18
dBm
LOS Deassert
LOSD
-15
dBm
LOS Hysteresis
LOSH
Receiver Electrical 3 dB upper
Cutoff Frequency, each Lane
0.5
3
4
dB
Fc
31
GHz
Conditions of Stress Receiver Sensitivity Test (Note 5)
Vertical Eye Closure Penalty,
1.8
dB
Stressed Eye J2 Jitter, each Lane
0.3
UI
Stressed Eye J9 Jitter, each Lane
0.47
UI
each Lane
Notes:
1. Even if the TDP < 1 dB, the OMA min must exceed the minimum value specified here.
2. See Figure 4 below.
3. The receiver shall be able to tolerate, without damage, continuous exposure to a modulated optical
input signal having this power level on one lane. The receiver does not have to operate correctly at
this input power.
4. Measured with conformance test signal at receiver input for BER = 1x10-12.
5. Vertical eye closure penalty and stressed eye jitter are test conditions 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
Temperature
monitor
absolute error
Supply
voltage
monitor absolute error
Channel
RX
power
monitor absolute error
Channel Bias current
monitor
Channel
TX
power
monitor absolute error
Symbol
Min
Max
Units
DMI_Temp
-3
+3
degC
DMI _VCC
-0.1
0.1
V
DMI_RX_Ch
-2
2
dB
DMI_Ibias_Ch
-10%
10%
mA
DMI_TX_Ch
-2
2
dB
Notes
Over operating
temperature range
Over full operating
range
1
1
Notes:
1. Due to measurement accuracy of different single mode fibers, there could be an additional +/-1 dB fluctuation, or a +/- 3
dB total accuracy.
Mechanical Dimensions
ESD
This transceiver is specified as ESD threshold 1KV for high speed data pins and 2KV for all others electrical
input pins, tested per MIL-STD-883, Method 3015.4 /JESD22-A114-A (HBM). However, normal ESD
precautions are still required during the handling of this module. This transceiver is shipped in ESD
protective packaging. It should be removed from the packaging and handled only in an ESD protected
environment.
Laser Safety
This is a Class 1 Laser Product according to EN 60825-1:2014. This product complies with 21 CFR 1040.10
and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated (June 24, 2007).
Caution: Use of controls or adjustments or performance of procedures other than those specified herein
may result in hazardous radiation exposure.
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