Ascent Communication Technology

100G QSFP28 EZR4 40km

The Q28-100G-LP100 100 Gb/s QSFP28 EZR4 Transceiver is a high-capacity optical module designed for long-distance data transmission up to 100 kilometers over single-mode fiber. Supporting 100 Gbps speeds, it’s ideal for telecommunications and data centers needing robust, high-speed connectivity. With its QSFP28 form factor and hot-pluggable design, the EZR4 contains 4-lane optical transmitter, 4-lane optical receiver and module management block including 2 wire serial inter-face. This transceiver stands out with its Extended Reach (EZR) capability, enabling reliable data transport over 100 km, making it suited for metropolitan and inter-city networks. Its advanced optical technology ensures minimal signal loss over long distances while maintaining low power consumption. Designed for reliability, the EZR4 includes digital diagnostics monitoring (DDM), offering real-time metrics like temperature and output power for proactive management. Compliant with QSFP28 MSA standards, it ensures compatibility and performance across networks, making it a cost-effective solution for long-range, high-speed data needs.

· Support line rates from 103.125 Gb/s

· Lane bit rate 25.78 Gb/s 100GE

· Up to 100km transmission with KR4-FEC

· LAN WDM EML laser and PIN receiver with SOA

· Support Multi-Pin function with IntL/RxLOSL and LPMode/TxDIS

· High speed I/O electrical interface (CAUI-4)

· I2C interface with integrated Digital Diagnostic monitoring

· QSFP28 MSA package with duplex LC connector

· Single +3.3V power supply

· Maximum power consumption 6W

· Operating case temperature: 0 to +70 °C

· Complies with EU Directive 2015/863/EU

Absolute Maximum Ratings

Parameter	Symbol	Min.	Max.	Unit	Notes
Storage Temperature	Ts	-40	+85	°C
Supply Voltage	Vcc	-0.5	+4.0	V
Operating Relative Humidity	RH		+85	%

Recommended Operating Conditions

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Operating Case Temperature	Tc	0		+70	°C
Power Supply Voltage	Vcc	3.13	3.3	3.47	V
Power Supply Current	Icc			1.82	A
Maximum Power Consumption	P_D			6	W
Aggregate Bit Rate	BR_AVE		103.125		Gb/s
Lane Bit Rate	BR_LANE		25.78125		Gb/s
Transmission Distance	TD			100	km
Coupled Fiber	Single mode fiber					9/125um SMF

Optical and Characteristics

Parameter	Symbol	Min.		Typ.	Max.		Unit	Notes
Transmitter
Signaling Speed per Lane				25.78125			Gbps
Lane Wavelength	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
Total Launch Power, 100GE	P_T	9			12.5		dBm	1
Average Launch Power per Lane,	Pavg	3			6.5		dBm	1
OMA, each Lane	P_OMA	4.2			7.7		dBm	1
Difference in Launch Power between Any Two Lanes(Average and OMA) between Any Two Lanes (OMA)	Ptx,diff				3		dB
Average Output Power (Laser Turn off)	P_off				-30		dBm
Side Mode Suppression Ratio	SMSR	30					dB
Extinction Ratio, 100GE	ER	6					dB
RIN20OMA	RIN				-130		dB/Hz
Optical Return Loss Tolerance	TOL				20		dB
Transmitter Reflectance	R_T				-12		dB
Optical Eye Mask	{0.25,0.4, 0.45, 0.25, 0.28, 0.4}						%	2
Receiver
Signaling Rate, each Lane			25.78125			Gbps
Center Wavelength Lane 0	λ0	1294.53		1295.56	1296.59		nm
Center Wavelength Lane 1	λ1	1299.02		1300.05	1301.09		nm
Center Wavelength Lane 2	λ2	1303.54		1304.58	1305.63		nm
Center Wavelength Lane 3	λ3	1308.09		1309.14	1310.19		nm
Damage threshold , each Lane	Pdamage	5.5					dBm
Average Receive Power, each Lane		-31			-6		dBm	3
Receiver Sensitivity Average, each Lane	SEN				-30		dBm	3
Los Assert	LosA	-40					dBm
Los De-assert	LosDA				-28		dBm

Notes:

1. The optical power is launched into SMF.

2. Measured with a PRBS 231 -1 test pattern @25.78125, Hit ratio≤5E-5.

3. Measured with a PRBS 231 -1 test pattern @25.78125 Gb/s, BER≤5E-5.

Electrical Characteristics

High-Speed Signal: Compliant to CAUI-4 (IEEE 802.3bm)

Low-Speed Signal: Compliant to SFF-8679.

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Transmitter(Module Input)
Data Rate, each Lane			25.78125		Gbps
Differential Voltage Pk-Pk	Vpp			900	mV	1
Common Mode Voltage	Vcm	-350		2850	mV	2
Transition Time	Trise/Tf all	10			ps	2
Receiver (Module Output)
Data Rate, each Lane			25.78125		Gbps
Common Mode Noise, RMS	Vrms			17.5	mV
Differential Output Voltage Swing	Vout, pp			900	mV
Eye Width	EW15	0.57			UI
Eye Height	EH15	228			mV
Differential Termination Resistance Mismatch				10	%	1
Transition Time	Trise/Tf all	12			ps

Notes:

1. At 1 MHz.

2. 20% to 80%.

Digital Diagnostics

Parameter	Range	Unit	Accuracy	Calibration
Temperature	0 to 70	°C	±3	Internal / External
Voltage	3.0 to 3.6	V	±3	Internal / External
Bias Current	30 to 100	mA	±10%	Internal / External
Tx Power	1 to 6.5	dB	±3	Internal / External
Rx Power	-29 to 4.5	dB	±3	Internal / External