100G QSFP28 SR4 850nm 100M MPO MMF Fiber Optic Transceiver

Detailed product specifications

1 Absolute Maximum Ratings

Parameter			Symbol	Min.	Typical	Max.	Unit
Storage Temperature (℃）			TS	-40		85	°C
Relative Humidity			RH	5		95	%
Power Supply Voltage			VCC	-0.3		3.6	V
Signal Input Voltage			Vin	Vcc-0.3		Vcc+0.3	V

2 Recommended Operating Environment

Parameter			Symbol	Min.	Typical	Max.	Unit	Note
Case operating Temperature			TOP	0		70	°C
Power Supply Voltage			VCC	3.13	3.3	3.46	V
Power Supply Current			ICC			750	mA
Data Rate			BR		25.78125		Gbps	Each Channel
Transmission Distance with			TD	0		70/100	m	OM3/OM4

3 Electrical Characteristics (TOP = 0 to 70 °C, VCC = 3.14 to 3.46 Volts)

Parameter			Symbol	Min.	Typical	Max.	Unit	Note
Supply Voltage			Vcc	3.14	3.3	3.46	V
Supply Current			Icc			750	mA
Transmitter
Input differential impedance			Rin		100		Ω	1
Differential data input swing			Vin.pp	180		1000	mV
Single ended input voltage tolerance			VinT	-0.3		4	V
Receiver
Differential data output swing			Vout.pp	300		850	mV	2
Single-ended output voltage				-0.3		4	V

Notes:
1) Connected directly to TX data input pins. AC coupled thereafter.
2) Into 100Ω ohms differential termination.

4 Optical Parameters(TOP = 0 to 70 °C, VCC = 3.14 to 3.46 Volts)

Parameter			Symbol	Min.	Typical	Max.	Unit	Ref.
Transmitter
Center Wavelength			λC	840	850	860	nm
Average Launch Power, each Lane			PAVG	-8.4		+2.4	dBm
Spectral Width (RMS)			λrms			0.6	nm
Extinction Ratio			ER	2			dB
Transmitter and Dispersion Penalty (TDP), each Lane			TDP			4.3	dB
Optical Return Loss Tolerance			ORL			12	dB
Output Eye Mask			Compliant with IEEE 802.3bm
Receiver
Receiver Wavelength			λC	840	850	860	nm
Rx Sensitivity per lane			RSENS			-10.3	dBm	1
Input Saturation Power (Overload)			Psat	2.4		6	dBm
Receiver Reflectance			Rr			-12	dB

Note:
1. Measured with a PRBS -5 -1 test pattern, @25.78Gb/s, BER<5.2*10 .

5 Diagnostic Monitoring Interface

The following digital diagnostic characteristics are defined over the normal operating conditions unless otherwise specified.
Parameter			Symbol	Min.	Typical	Max.	Unit	Note
Temperature monitor absolute error			DMI_Temp	-3		3	°C
Supply voltage monitor absolute error			DMI _VCC	-0.1		0.1	V
Channel RX power monitor absolute error			DMI_RX	-3		3	dB
Channel Bias current monitor			DMI_Ibias	-10%		10%	mA
Temperature monitor absolute error			DMI_Temp	-3		3	°C

6 Power Supply Filtering

The host board should use the power supply filtering shown in Figure1.

Figure1. Host Board Power Supply Filtering

7 Optical Interface Lanes and Assignment

The optical interface port is a male MPO connector. The four fiber positions on the left as shown in Figure 2,
with the key up, are used for the optical transmit signals (Channel 1 through4).
The fiber positions on the right are used for the optical receive signals (Channel 4 through 1).
The central four fibers are physically present.

 

Figure 2. Optical Receptacle and Channel Orientation

ESD

This transceiver is specified as ESD threshold 1kV for SFI pins and 2kV for all other electrical input pins, tested per MIL-STD-883, Method 3015.4 /JESD22-A114-A (HBM). However, normal ESD precautions are still required during the handling of this module. This transceiver is shipped in ESD protective packaging. It should be removed from the packaging and handled only in an ESD protected environment.

Laser Safty

This is a Class 1 Laser Product according to IEC 60825-1:2007. This product complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated (June 24, 2007).

8 Pin Assignment

 

9 Transceiver Block Diagram

Pin	Logic	Symbol	Max  Unit  Conditions					Ref.
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 Output
6	CML-I	Tx4p	Transmitter Non-Inverted Data Output
7		GND	Ground					1
8	LVTTL-I	ModSelL	Module Select
9	LVTTL-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					1
14	CML-O	Rx3p	Receiver Inverted Data Output
15	CML-O	Rx3n	Receiver Non-Inverted Data Output
16		GND	Ground					1
17	CML-O	Rx1p	Receiver Inverted Data Output
18	CML-O	Rx1n	Receiver Non-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
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	+3.3V Power Supply Transmitter					2
30		Vcc1	+3.3V Power Supply					2
31	LVTTL-I	LPMode	Low Power Mode
32		GND	Ground					1
33	CML-I	Tx3p	Transmitter Inverted Data Output
34	CML-I	Tx3n	Transmitter Non-Inverted Data Output
35		GND	Ground					1
36	CML-I	Tx1p	Transmitter Inverted Data Output
37	CML-I	Tx1n	Transmitter Non-Inverted Data Output
38		GND	Ground					1

Note:
1.GND is the symbol for single and supply(power) common for QSFP modules, All are common within the QSFP module and all module voltages are referenced to this potential otherwise noted. Connect these directly to the host board signal common ground plane. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.

2.VccRx, Vcc1 and VccTx are the receiver and transmitter power suppliers and shall be applied concurrently. Recommended host board power supply filtering is shown below. VccRx, Vcc1 and VccTx may be internally connected within the QSFP transceiver module in any combination. The connector pins are each rated for maximum current of 500mA.

10 Diagram Mechnical Drawing