100G QSFP28 CWDM4

100G-QSFP28-CWDM4 is a Four-Channel, Pluggable, dual LC, Fiber-Optic QSFP28 Transceiver for 100G Ethernet 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 2km using single mode fiber. These 100G-QSFP28-CWDM4 are designed to operate over single mode fiber systems using 1310nm DFB laser array. Huihongfiber QSFP28 CWDM4 is one kind of transceiver which provides increased port density and total system cost savings. They are compliant with the QSFP28 MSA, CWDM4 MSA and portions of IEEE P802.3bm.

100G QSFP28 CWDM4 Features
Four-channel full-duplex transceiver modules
Transmission data rate up to 26Gbit/s per channel
Up to 2km transmission of single mode fiber
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
LC connector receptacle
Built-in digital diagnostic function

100G QSFP28 CWDM4 Applications
100G Ethernet
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 G.652	D	0		2	km

Optical Characteristics
All parameters are specified under the recommended operating conditions with PRBS31 data pattern unless otherwise specified.

Symbol	Min	Typical		Max		Unit		Notes
L0	1264.5	1271		1277.5		nm
L1	1284.5	1291		1297.5		nm
L2	1304.5	1311		1317.5		nm
L3	1324.5	1331		1337.5		nm
λrms	–			3.5		nm		1
PAVG	-4	-0.5		+2.5		dBm
lane
Optical Modulation Amplitude (OMA)			POMA		-4		-0.5		+2.5	dBm
Difference in Launch Power between any two lanes			Ptx,diff						4.0	dB
Transmitter and Dispersion Penalty per Lane			TDP						3	dBm
Rise/Fall Time			Tr/Tf						30	ps
Extinction Ratio			ER		3.5					dB
Transmitter Reflectance			RT						-12	dB
Transmitter Eye Mask Margin			EMM		10					%
Average Launch Power OFF Transmitter, each Lane			Poff						-30	dBm
Transmitter Eye Mask Definition {X1, X2, X3, Y1, Y2, Y3}					{0.31, 0.4, 0.45, 0.34, 0.38, 0.4}
Parameter			Symbol		Min		Typical		Max	Unit
Wavelength Assignment			L0		1264.5		1271		1277.5	nm
			L1		1284.5		1291		1297.5	nm
			L2		1304.5		1311		1317.5	nm
			L3		1324.5		1331		1337.5	nm
Damage Threshold			THd		+3					dBm
Overload, each lane			OVL		+2.5					dBm
Receiver Sensitivity in OMA, each Lane			SEN						-10	dBm
Signal Loss Assert Threshold			LOSA		-30					dBm
Signal Loss Deassert Threshold			LOSD						-12	dBm
LOS Hysteresis			LOSH		0.5		1.5		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.
Sensitivity is specified at 5×10-5 BER.

Electrical Specifications

Parameter	Symbol	Min	Typical	Max	Unit
Differential input impedance	Zin	90	100	110	ohm
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
Input Logic Level High	VIH	2.0		VCC	V
Input Logic Level Low	VIL	0		0.7	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
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

Notes:

Module circuit ground is isolated from module chassis ground within the module. GND is the symbol for signal and supply (power) common for QSFP modules.
The connector pins are each rated for a maximum current of 500mA.

ModSelL Pin
The ModSelL is an input pin. When held low by the host, the module responds to 2-wire serial communication commands. The ModSelL allows the use of multiple QSFP modules on a single 2-wire interface bus. When the ModSelL is “High”, the module will not respond to any 2-wire interface communication from the host. ModSelL has an internal pull-up in the module.
ResetL Pin
Reset. LPMode_Reset has an internal pull-up in the module. A low level on the ResetL pin for longer than the minimum pulse length (t_Reset_init) initiates a complete module reset, returning all user module settings to their default state. Module Reset Assert Time (t_init) starts on the rising edge after the low level on the ResetL pin is released. During the execution of a reset (t_init) the host shall disregard all status bits until the module indicates a completion of the reset interrupt. The module indicates this by posting an IntL signal with the Data_Not_Ready bit negated. Note that on power up (including hot insertion) the module will post this completion of reset interrupt without requiring a reset.
LPMode Pin
Huihongfiber CWDM4 operate in the low power mode (less than 1.5 W power consumption) This pin active high will decrease power consumption to less than 1W.
ModPrsL Pin
ModPrsL is pulled up to Vcc on the host board and grounded in the module. The ModPrsL is asserted “Low” when the module is inserted and deasserted “High” when the module is physically absent from the host connector.
IntL Pin
IntL is an output pin. When “Low”, it indicates a possible module operational fault or a status critical to the host system. The host identifies the source of the interrupt by using the 2-wire serial interface. The IntL pin is an open collector output and must be pulled up to Vcc on the host board.
Power Supply Filtering
The host board should use the power supply filtering shown in Figure1.

Figure1. Host Board Power Supply Filtering
Diagnostic Monitoring Interface
Digital diagnostics monitoring function is available on all Huihongfiber QSFP28 CWDM4. A 2-wire serial interface provides user to contact with module. The structure of the memory is shown in Figure 3. The memory space is arranged into a lower, single page, address space of 128 bytes and multiple upper address space pages. This structure permits timely access to addresses in the lower page, such as Interrupt Flags and Monitors. Less time critical time entries, such as serial ID information and threshold settings, are available with the Page Select function. The interface address used is A0xh and is mainly used for time critical data like interrupt handling in order to enable a one-time-read for all data related to an interrupt situation. After an interrupt, IntL, has been asserted, the host can read out the flag field to determine the affected channel and type of flag.

Parameter	Symbol	Min	Max	Unit	Notes
Temperature monitor absolute error	DMI_Temp	-3	+3	degC	Over operating temp
Supply voltage monitor absolute error	DMI _VCC	-0.1	0.1	V	Full operating range
Channel RX power monitor absolute error	DMI_RX	-3	3	dB	Per channel
Channel Bias current monitor	DMI_Ibias	-10%	10%	mA	Per channel
Channel TX power monitor absolute error	DMI_TX	-3	3	dB	Per channel

Figure 3

EEPROM Serial ID Memory Contents:

Data Address (Dec)	Name of Field	Description	Value(Hex)
Base ID Fields
128	Identifier	QSFP28	0E
129	Extended Identifier	3.5W max. power consumption	CC
130	Connector type	LC Connector	0C
131	Transceiver Application supported	Reserved	80
132		0
133		0
134		Reserved	0
135		Intermediate distance	20
136		Shortwave laser w/o OFC (SN)	10
137		Single Mode (SM)	01
138		1200 Mbytes/Sec	80
139	Encoding	NRZ	03
140	BR, nominal	Nominal bit rate	67
141	Rate Select	QSFP Rate Select Version 1	0
142	Link Length(Standard SM Fiber)	2KM	2
143	Link Length(OM3)	Not supported	0
144	Link Length(OM2)	Not supported	0
145	Link Length(OM1)	Not supported	0
146	Link Length(Cooper)	Not supported	0
147	Device Tech	Uncooled transmitter device;1310nm DFB; No wavelength control; PIN detector; Transmitter not tunable	40
148			52
149			41

150	Vendor Name	HUIHONGFIBER	59
151			4F
152			50
153			54
154			45
155			4B
156
157
158
159
160
161
162
163
164	Electronic or optical interfaces for InfiniBand	4x SDR Speed(2.5Gb/s),DDR Speed(5.0Gb/s),QDR Speed(10Gb/s).	7
165	Vendor OUI	00	00
166		00	00
167		00	00
168	Vendor PN
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184	Vendor Rev	REV.1A	31

185			41
186	Wavelength	1310nm	66
187	Wavelength	1310nm	58
188	Wavelength Tolerance	±50	0B
189	Wavelength Tolerance	±50	B8
190	Max Case Temp	Max Case Temp 70°C	46
191	Check Sum	Address 128-190
Extended ID Fields
192	Options	Rate Select, TX Disable, TX Fault, LOS, Warning indicators for: Temperature, VCC, RX power, TX Bias	0
193			0
194			0
195			DE
196	Vendor SN	Serial number provided by vendor(ASCII)
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212	Date Code	Programmed with manufacturing date
213
214
215
216
217
218	Lot Number	Programmed with manufacturing lot
219	Lot Number	Programmed with manufacturing lot
220	Diagnostic Monitoring Type		8

221	Enhanced Options		0
222	Reserved	Reserved	Reserved
223	CC_EXT	Address 192-222
		Vendor Specific ID Fields
224-255		Vendor Specific EEPROM

Enquiry Now

Certified

Leading Factory

Enquiry Now

Certified

Leading Factory