QSFP28 100G CWDM4 2K

QSFP28 100G CWDM4 2K
The QSFP28 100G-CWDM4-2km module is a highly integrated 4x28G transceiver
focused on reach, bandwidth, density and cost for high port-count 100G systems,
and client-side 100G interfaces. It is compliant with the 100G 4WDM-10 MSA,
which is based on the CWDM4 MSA version 1.1. It is interoperable with CWDM4
transceivers over a 2 km reach.

Features of QSFP28 100G CWDM4 2k
Reach: 2 km via SMF
Link budget assumes the use of KR4 FEC by the host
Uncooled CWDM DFB lasers, directly modulated
Electrical interface: retimed CAUI-4 per 100G Ethernet IEEE 802.3bm Annex 83E
User controllable Transmit Input Equalization and Receiver Output Amplitude
MSA-compliant performance monitoring via I2C interface
Fiber connector: SMF LC duplex connector
Hot-pluggable
0–70°C operating temp
Power dissipation < 3.5W
RoHS6 compliant (lead-free)

Applications of QSFP28 100G CWDM4 2k
100G CWDM4 Ethernet
InfiniBand 4x EDR

Specifications of QSFP28 100G CWDM4 2k
Optical Transmitter PerformanceOptical Receiver PerformanceRecommended
Operating Environment
Parameter Symbol Min Typical Max Unit
Center Wavelength Ch0 λ0 1264.5 - 1277.5 nm
Ch1 λ1 1284.5 - 1297.5 nm
Ch2 λ2 1304.5 - 1317.5 nm
Ch3 λ3 1324.5 1337.5 nm
Bit Rate per Channel B 25.78125±100ppm Gb/s
Side Mode Suppression Ratio SMSR 30 - - dB
Average launch power, each lane - -6.5 - 2.5 dBm
Optical Modulation Amplitude (each lane) OMA -4.0 - 2.5
dBm
Launch power in OMA minus TDP, each lane OMA-TDP -5.0 - -
dBm
Transmission & dispersion penalty,
each lane TDP - - 3.0 dB
RIN20 OMA - - - -130 dB/Hz
Transmitter Reflectance - - - -12 dB
Extinction Ratio ER 3.5 - dB
Transmitter eye mask definition {X1, X2, X3, Y1, Y2, Y3} {0.31, 0.4,
0.45, 0.34, 0.38, 0.4}
CWDM4 MSA Technical Specifications Rev 1.1
Total average launch power - - - 8.5 dBm
Average launch power of OFF transmitter, each lane - - -
-30 dBm
Optical return loss tolerance - - - 20 dB

Pin Descriptions of QSFP28 100G CWDM4 2k
Pin Symbol Name/Description
1 GND Ground
2 Tx2n Transmitter Inverted Data Input
3 Tx2p Transmitter Non-Inverted Data Input
4 GND Ground
5 Tx4n Transmitter Inverted Data Input
6 Tx4p Transmitter Non-Inverted Data Input
7 GND Ground
8 ModSelL Module Select
9 ResetL Module Reset
10 Vcc Rx +3.3 V Power supply receiver
11 SCL 2-wire serial interface clock
12 SDA 2-wire serial interface data
13 GND Ground
14 Rx3p Receiver Non-Inverted Data Output
15 Rx3n Receiver Inverted Data Output
16 GND Ground
17 Rx1p Receiver Non-Inverted Data Output
18 Rx1n Receiver Inverted Data Output
19 GND Ground
20 GND Ground
21 Rx2n Receiver Inverted Data Output
22 Rx2p Receiver Non-Inverted Data Output
23 GND Ground
24 Rx4n Receiver Inverted Data Output
25 Rx4p Receiver Non-Inverted Data Output
26 GND Ground
27 ModPrsL Module Present
28 IntL Interrupt
29 Vcc Tx +3.3 V Power supply transmitter
30 Vcc1 +3.3 V Power Supply
31 LPMode Low Power Mode
32 GND Ground
33 Tx3p Transmitter Non-Inverted Data Input
34 Tx3n Transmitter Inverted Data Input
35 GND Ground
36 Tx1p Transmitter Non-Inverted Data Input
37 Tx1n Transmitter Inverted Data Input
38 GND Ground

Important Notice of QSFP28 100G CWDM4 2k
Performance figures, data and any illustrative material provided in this data
sheet are typical and must be specifically confirmed in writing by T&S before
they become applicable to any particular order or contract. In accordance with
the T&S policy of continuous improvement specifications may change without
notice.
The publication of information in this data sheet does not imply freedom from
patent or other protective rights of T&S or others. Further details are
available from any T&S sales representative.

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