Qsfp28 100g Bidi Transceiver Module for 70 M/100m Om3/Om4 mm Fiber

• Customization: Available
• Usage: Workstation, Server
• Type: Wireless
• Model NO.: LAQ28-SR2
• Support Network: Ethernet
• Information content: Data
• Certification: CE, ISO, RoHS
• Condition: New
• Transport Package: Blister Pack
• Trademark: Link-all
• Origin: China
• HS Code: 8517706000
• Production Capacity: 100, 000 Per Year
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 1.000kg

Product Description

100Gbps QSFP28 BIDI SR Transceiver 100M/OM4(FEC) DDM
LAQ28-SR

Product Features

• QSFP28 MSA compliant
• IEEE 802.3 bm-2015 compliant                                                                                                      
• 2 BiDi lanes MUX/DEMUX design
• 4 x 25.78125G electrical interface (CAUI-4)
• Maximum power consumption 4 W
• LC duplex receptacle
• 103.125 Gbps aggregate bit rate
• Up to 70 m/100 m transmission on OM3/OM4 fiber with FEC
• Operating case temperature: 0°C to +70°C
• Single 3.3 V power supply
• I2C digital management interface
• RoHS 2 compliant

Applications

• 100GE Ethernet
• Data Center Interconnect
• Enterprise Networking

Pin Descriptions

Pin	Symbol	Description	Notes
1	GND	Ground	1
2	Tx2n	Transmitter Inverted Data Input
3	Tx2p	Transmitter Non-Inverted Data Input
4	GND	Ground	1
5	Tx4n	Transmitter Inverted Data Input
6	Tx4p	Transmitter Non-Inverted Data Input
7	GND	Ground	1
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	1
14	Rx3p	Receiver Non-Inverted Data Output
15	Rx3n	Receiver Inverted Data Output
16	GND	Ground	1
17	Rx1p	Receiver Non-Inverted Data Output
18	Rx1n	Receiver Inverted Data Output
19	GND	Ground	1
20	GND	Ground	1
21	Rx2n	Receiver Inverted Data Output
22	Rx2p	Receiver Non-Inverted Data Output
23	GND	Ground	1
24	Rx4n	Receiver Inverted Data Output
25	Rx4p	Receiver Non-Inverted Data Output
26	GND	Ground	1
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	1
33	Tx3p	Transmitter Non-Inverted Data Input
34	Tx3n	Transmitter Inverted Data Input
35	GND	Ground	1
36	Tx1p	Transmitter Non-Inverted Data Input
37	Tx1n	Transmitter Inverted Data Input
38	GND	Ground	1

Notes: Circuit ground is internally isolated from chassis ground.

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	Typ	Max	Unit	Notes
Maximum supply voltage	Vcc	-0.3	3.3	3.6	V
Storage temperature	Ts	-40		+85	°C
Relative humidity	RH	5		85	%	Non-condensing
Damage threshold, each lane	THd	5			dBm

Operating Environments
Electrical and optical characteristics below are defined under this operating environment, unless otherwise specified.

Parameter	Symbol	Min	Typ	Max	Unit
Supply voltage	Vcc	3.135	3.3	3.465	V
Case temperature	Top	0		+70	°C
Data rate, each lane			25.78125		Gbps
Data rate accuracy		-100		100	ppm
Link distance with OM3/OM4				70/100	m

Optical Characteristics

Parameters	Min	Typ	Max	Unit
Transmitter
Data rate, each lane		53.125		Gbps
Signaling speed accuracy	-100		100	ppm
Wavelengths 1	844		863	nm
Wavelengths 2	900		918	Nm
RMS spectral width			0.6@850nm 0.65@908nm	nm
Average launch power, each lane	-4.4		+4	dBm
Optical modulation amplitude	-3.2		+3	dBm
Transmitter and dispersion eye closure for PAM4 (TDECQ)			4.5	dB
Launch power in OMAouter minus TDECQ	-5.6			dBm
Average launch power of OFF transmitter			-30	dB
Extinction ratio (ER)	3			dB
RIN12 OMA			-128	dB/Hz
Optical return loss tolerance			12	dB
Encircled flux	≥ 86% @ 19 μm, ≤ 30%@ 4.5 μm
Receiver
Data rate, each lane		53.125		Gbps
Signaling speed accuracy	-100		100	ppm
Wavelengths 1	844		863	nm
Wavelengths 2	900		918	nm
Average receive power	-8.2		+4	dBm
Optical modulation amplitude receive	-		+3	dBm
Damage threshold	+5			dBm
Saturation power	3.5			dBm
Receiver reflectance			-12	dB
Receiver sensitivity	Max (-6.6, SECQ - 8) @5E-5			dBm
Stress sensitivity OMA			-3.5	dBm
Conditions of stressed receiver sensitivity test
Stressed eye closure for PAM4 (SECQ)		4.5		dB
OMAouter of each aggressor lane		+3		dBm
No-power monitor RX		-40		dBm
LOS assert (OMA)	-30			dBm
LOS de-assert (OMA)			-5.9	dBm
LOS hysteresis	0.5			dBm

Electrical Characteristics

Parameter	Symbol	Min	Typ	Max	Unit
Power dissipation				4	W
Supply current	Icc			1.276	A
Transmitter
Differential input voltage swing	Vpp	35		900	mV
Differential input impedance	Zin	90	100	110	Ω
Receiver
Differential output voltage swing	Vpp			900	mV
Differential input impedance	Zout	90	100	110	Ω

EEPROM (A0h) Definitions
Lower Page 00h Memory Map

Data Address	Name	Description	Value (Hex)	Read/Write
0	Identifier	Identifier		Read-Only
1	Status	Revision Compliance		Read-Only
2		Status		Read-Only
3	Interrupt Flags	L-Tx/RX LOS, channel 1~4		Read-Only
4		L-Tx/RX Adapt EQ Fault, channel 1~4 L-TX Fault, channel 1~4		Read-Only
5		L-Tx/RX LOL, channel 1~4		Read-Only
6		L-Temp High/Low Alarm/Warning Initialization complete flag		Read-Only
7		L-VCC High/Low Alarm/Warning		Read-Only
8		Vendor Specific		Read-Only
9		L-Rx Power High/Low Alarm/Warning, channel 1~2		Read-Only
10		L-RxPower High/Low Alarm/Warning, channel 3~4		Read-Only
11		L-Tx Bias High/Low Alarm/Warning, channel 1~2		Read-Only
12		L-Tx Bias High/Low Alarm/Warning, channel 3~4		Read-Only
13		L-Tx Power High/Low Alarm/Warning, channel 1~2		Read-Only
14		L-Tx Power High/Low Alarm/Warning, channel 3~4		Read-Only
15-18		Reserved		Read-Only
19-21		Vendor Specific		Read-Only
22	Free Side Device Monitors	Internally measured temperature (MSB)		Read-Only
23		Internally measured temperature (LSB)		Read-Only
24		Reserved		Read-Only
25				Read-Only
26		Internally measured supply voltage (MSB)		Read-Only
27		Internally measured supply voltage (LSB)		Read-Only
28-29		Reserved		Read-Only
30-33		Vendor Specific		Read-Only
34	Channel Monitors	Internally measured RX input power, channel 1 (MSB)		Read-Only
35		Internally measured RX input power, channel 1 (LSB)		Read-Only
36	Channel Monitors	Internally measured RX input power, channel 2 (MSB)		Read-Only
37		Internally measured RX input power, channel 2 (LSB)		Read-Only
38		Internally measured RX input power, channel 3 (MSB)		Read-Only
39		Internally measured RX input power, channel 3 (LSB)		Read-Only
40		Internally measured RX input power, channel 4 (MSB)		Read-Only
41		Internally measured RX input power, channel 4 (LSB)		Read-Only
42		Internally measured TX bias, channel 1 (MSB)		Read-Only
43		Internally measured TX bias, channel 1 (LSB)		Read-Only
44		Internally measured TX bias, channel 2 (MSB)		Read-Only
45		Internally measured TX bias, channel 2 (LSB)		Read-Only
46		Internally measured TX bias, channel 3 (MSB)		Read-Only
47		Internally measured TX bias, channel 3 (LSB)		Read-Only
48		Internally measured TX bias, channel 4 (MSB)		Read-Only
49		Internally measured TX bias, channel 4 (LSB)		Read-Only
50		Internally measured TX Power, channel 1 (MSB)		Read-Only
51		Internally measured TX Power, channel 1 (LSB)		Read-Only
52		Internally measured TX Power, channel 2 (MSB)		Read-Only
53		Internally measured TX Power, channel 2 (LSB)		Read-Only
54		Internally measured TX Power, channel 3 (MSB)		Read-Only
55		Internally measured TX Power, channel 3 (LSB)		Read-Only
56	Channel Monitors	Internally measured TX Power, channel 4 (MSB)		Read-Only
57		Internally measured TX Power, channel 4 (LSB)		Read-Only
58-73		Reserved channel monitor		Read-Only
74-81		Vendor Specific		Read-Only
82-85	Reserved			Read-Only
86	Control	Tx Disable, channel 1~4		Read/Write
87		Rx_Rate_select, channel 1~4		Read/Write
88		Tx_Rate_select, channel 1~4		Read/Write
89		Rx4_Application_Select, Rx Channel 4		Read/Write
90		Rx3_Application_Select, Rx Channel 3		Read/Write
91		Rx2_Application_Select, Rx Channel 2		Read/Write
92		Rx1_Application_Select, Rx Channel 1		Read/Write
93		Reserved High Power Class Enable Power set Power override		Read/Write
94		Tx4_Application_Select, Rx Channel 4		Read/Write
95		Tx3_Application_Select, Rx Channel 3		Read/Write
96		Tx2_Application_Select, Rx Channel 2		Read/Write
97		Tx1_Application_Select, Rx Channel 1		Read/Write
98		Tx/Rx_CDR_control, channel 1~4		Read/Write
99		Reserved		Read/Write
100	Module and Channel Masks	Masking Bit for TX/RX LOS indicator, channel 1~4		Read/Write
101		Masking Bit for TX, Adaptive EQ fault indicator, channel 1~4 Masking Bit for TX Transmitter/Laser indicator, channel 1~4		Read/Write
102		Masking Bit for TX/RX CDR Loss of Lock indicator, channel 1~4		Read/Write
103		Masking Bit for Temperature alarm/warning		Read/Write
104		Masking Bit for Vcc alarm/warning		Read/Write
105-106		Vendor Specific		Read/Write
107	Reserved	Max Power Consumption		Read/Write
108	Free Side Device Properties	Propagation Delay MSB		Read-Only
109		Propagation Delay LSB		Read-Only
110	Free Side Device Properties	Advanced Low Power Mode Far Side Managed Min Operating Voltage		Read-Only
111		Assigned for use by PCI Express		Read-Only
112				Read/Write
113	Free Side Device Properties	Far-End Implementation Near-End Implementation		Read/Write
114		Tx_TurnOn MaxDuration DatapathInit MaxDuration
115		ModSelL wait time exponent ModSelL wait time mantissa
116		Secondary Extended Spec Compliance
117-118	Reserved
119-122	Password Change Entry Area			Read/Write
123-126	Password Entry Area			Read/Write
127	Page Select Byte	Page Select		Read/Write
128	Identifier	Identifier Type of serial Module		Read-Only
129	Ext. Identifier	Extended Identifier of Serial Module		Read-Only
130	Connector	Code for connector type		Read-Only
131-138	Specification compliance	Code for electronic compatibility or optical compatibility		Read-Only
139	Encoding	Code for serial encoding algorithm		Read-Only
140	BR, nominal	Nominal bit rate, units of 100 MBits/s		Read-Only
141	Extended Rate Select Compliance	Tags for extended rate select compliance		Read-Only
142	Length (SMF)	Link length supported for SMF fiber in km (note 1)		Read-Only
143	Length (OM3 50 μm)	Link length supported for EBW 50/125 μm fiber (OM3), units of 2 m		Read-Only
144	Length (OM2 50 μm)	Link length supported for 50/125 μm fiber (OM2), units of 1 m		Read-Only
145	Length (OM1 62.5 μm)	Link length supported for 62.5/125 μm fiber (OM1), units of 1 m		Read-Only
146	Length (Copper)	Link length of copper or active cable, units of 1 m, Link length supported for 50/125 μm fiber (OM4), units of 2 m		Read-Only
147	Device technology	Device technology		Read-Only
148-163	Vendor name	QSFP28 vendor name (ASCII)		Read-Only
164	Extended Module	Extended Module codes for InfiniBand		Read-Only
165-167	Vendor OUI	QSFP28 vendor IEEE company ID		Read-Only
168-183	Vendor PN	Part number provided by QSFP28 vendor (ASCII)		Read-Only
184	Vendor rev	Revision level for part number provided by vendor (ASCII)		Read-Only
185				Read-Only
186	Wave length or Copper cable Attenuation	Nominal laser wavelength (wavelength=value/20 in nm) or copper cable attenuation in dB at 2.5 GHz (Byte 186) and 5.0 GHz (Byte 187)		Read-Only
187				Read-Only
188	Wavelength tolerance	Guaranteed range of laser wavelength (+/- value) from nominal wavelength. (wavelength Tol.=value/200 in nm)		Read-Only
189				Read-Only
190	Max case temp.	Maximum case temperature in degrees C		Read-Only
191	CC_BASE	Check code for base ID fields (Bytes 128-190)		Read-Only
192	Link codes	Extended Specification Compliance Codes		Read-Only
193	Options	Rate Select, TX Disable, TX Fault, LOS, Warning indicators for: Temperature, VCC, RX power, TX Bias		Read-Only
194				Read-Only
195				Read-Only
196-211	Vendor SN	Serial number provided by vendor (ASCII)		Read-Only
212-219	Date Code	Vendor's manufacturing date code		Read-Only
220	Diagnostic Monitoring Type	Indicates which types of diagnostic monitoring are implemented (if any) in the Module. Bit 1,0 Reserved	*	Read-Only
221	Enhanced Options	Indicates which optional enhanced features are implemented in the Module.	*	Read-Only
222	BR, nominal	Nominal bit rate per channel, units of 250 Mbps. Complements Byte 140	*	Read-Only
223	CC_EXT	Check code for the Extended ID Fields (Bytes 192-222)	*	Read-Only
224-255	Vendor Specific EEPROM	Vendor Specific ID	*	Read-Only

Notes: *Represent that the values read from register varied according to module state.

Digital Diagnostics Functions
Digital diagnostic management interface (DDMI) is realized by I2C interface in compliance with SFF-8636. Diagnostic management functions are realized, and the data addresses are listed in the form below.

Performance Item	Data Address		Monitor Error
	Alarm & Warning	Monitor
Module temperature	6	22-23	≤ ±3°C
Module voltage	7	26-27	≤ ±3%
Bias current	11-12	42-49	≤ ±10%
Transmitter optical power	13-14	50-57	≤ ±3 dB
Receiver optical power	9-10	34-41	≤ ±3 dB

Regulatory Compliance

Feature	Category	Standard	Performance
Safety	NRTL	UL 62368-1 CAN/CSA C22.2 No. 62368-1	NRTL recognized component for US and CAN
	TUV	EN 62368-1 EN 60825-1:2014+A11:2021 EN 60825-2	TUV certificate
	FDA	U.S. 21 CFR 1040.10 & 1040.11, Notice 56	FDA/CDRH certified with accession number according to Laser Notice 56
Electromagnetic Compatibility	Radiated emissions	EN 55032 CISPR 32 ICES-003 VCCI-CISPR 32 AS/NZS CISPR 32	Class B digital device with a minimum -6 dB margin to the limit when tested with a metal enclosure. Final margin may vary depending on system application, good system EMI design practice, ie: suitable metal enclosure and well-bonding, is required to achieve Class B margins at the system level. Tested frequency range: 30 MHz to 40 GHz or 5th harmonic (5 times the highest frequency), whichever is less.
	ESD	EN 55035 CISPR 35	Withstands discharges of ± 8 kV contact, ±15 kV air.
	Radiated immunity	EN 55035 CISPR 35	Field strength of 10 V/m from 80 MHz to 6 GHz.
Restriction of Hazardous Substances	RoHS	EN IEC 63000:2018 & BS EN IEC 63000:2018

ESD Design
Normal ESD precautions are required during the handling of this module. This transceiver is shipped in ESD protective packaging. It should be removed from the packaging and otherwise handled in an ESD protected environment utilizing standard grounded benches, floor mats, and wrist straps.

Parameter	Threshold value	Notes
ESD of high-speed pins	1 kV	Human body model
ESD of low-speed pins	2 kV	Human body model
Air discharge during operation	15 kV
Direct contact discharges to the case	8 kV

Safety Specification Design
Do not look into fiber end faces without eye protection using an optical meter (such as magnifier and microscope) within 100 mm, unless you ensure that the laser output is disabled. When operating an optical meter, observe the operation requirements.
CAUTION: Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.