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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