100G ZR4 Long Reach Transceiver QSFP28 100km-Zhangjiagang Rich Opto International Trading Co., Ltd.

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 transceiver.

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Maximum Supply Voltage	Vcc	0		3.6	V
Storage Temperature	Ts	-40		85	℃
Relative Humidity	RH	5		85	%	1
Damage Threshold, each lane	THd	6.5			dBm

Notes: Non‑condensing.

Operating Environment
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	℃
Link Distance with G.652				100	km

Electrical Characteristics

Parameter	Symbol	Min	Typ	Max	Unit	Note
Power dissipation				6.5	W

Supply Current	Icc			1.8759	A	Steady state

Transmitter

Data Rate, each lane			25.78125		Gbps

Differential Voltage pk-pk	Vpp			900	mV	At 1 MHz

Common Mode Voltage	Vcm	-350		2850	mV

Transition time	Trise/Tfall	10			ps	20%~80%

Differential Termination Resistance Mismatch				10	%

Eye width	EW15	0.46			UI

Eye height	EH15	95			mV

Receiver

Data Rate, each lane			25.78125		Gbps

Differential Termination Resistance Mismatch				10	%	At 1 MHz

Differential output voltage swing	Vout, pp			900	mV

Common Mode Noise, RMS	Vrms			17.5	mV

Transition time	Trise/Tfall	12			ps	20%~80%

Eye width	EW15	0.57			UI

Eye height	EH15	228			mV

Optical Characteristics

Parameters	Unit	min	type	max	Note
Transmitter

Signaling Speed per Lane	Gb/s		25.78125 ± 100 ppm

Transmit wavelengths	nm	1294.53 1299.02 1303.54 1308.09	1295.56 1300.05 1304.58 1309.14	1296.59 1301.09 1305.63 1310.19

Side‑Mode Suppression Ratio (SMSR)	dB	30

Total Average Launch Power	dBm	8		12.5

Average launch power, each lane	dBm	2		6.5

Difference in launch power between any two lanes(Average and OMA)	dBm			3

Average launch power of OFF transmitter, each lane	dBm			-30

Extinction Ratio (ER)	dB	6

RIN OMA	dB/Hz			-130

Optical return loss tolerance	dB			20

Transmitter reflectance	dB			-12

Transmitter eye mask definition (X1,			{0.25, 0.4, 0.45, 0.25, 0.28, 0.4}		1

{X2, X3, Y1, Y2, Y3}

Mask margin	%	5

Receiver

Signaling Speed per Lane	Gb/s	25.78125 ±100 ppm

Receive wavelengths	nm	1294.53 1299.02 1303.54 1308.09	1295.56 1300.05 1304.58 1309.14	1296.59 1301.09 1305.63 1310.19
Average receiver power, each lane	dBm	-29		-7

Receiver power, each lane(OMA)	dBm			-7

Receiver reflectance	dB			-27

Receiver sensitivity Average, each lane	dBm			-28	1

Receiver 3 dB electrical upper cutoff frequency, each lane	GHz			31

Damage threshold, each lane	dBm	6.5

LOS Assert	dBm	-40

LOS Deassert	dBm			-29

LOS Hysteresis	dB	0.5

Notes: Sensitivity is specified at BER@2E‑5 with FEC.

Digital Diagnostic Monitoring Functions
100GBASE‑ZR4 support the I2C based Diagnostic Monitoring Interface (DMI) defined in document SFF‑8636. The host can access real‑time performance of transmitter and receiver optical power, temperature, supply voltage and bias current.

Performance Item	Related Bytes(A0[00] memory)	Monitor Error	Notes
Module temperature	22 to 23	+/-3°C	1,2
Module voltage	26 to 27	< 3%	2
LD Bias current	42 to 49	< 10%	2
Transmitter optical power	50 to 57	< 3dB	2
Receiver optical power	34 to 41	< 3dB	2