10G SFP+ SR Dual LC Transceiver

• Compliant to QSFP28 MSA
• SFF-8636 Specification
• Wide Operating Temperature(0°C~70°C)
• 4x25Gbps and 4x27.95Gbps 850nm VCSEL-based Transmitter
• RoHS compliant
• Telecom Central Offices (CO)

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Model:
25G SFP28 SR Transceiver
Brand:
zhaolong

Product Description

Application

Data center & Networking Equipment
Servers/Storage Devices
High Performance Computing (HPC)
Switches/Routers
Telecom Central Offices (CO)
Test and Measurement Equipment

Standards Compliance

IEEE 802.3ae
SFF8472
SFP+ MSA
SFF-8431 and SFF-8432

Features

Up to 11.1Gbps Data Links
850nm VCSEL laser and PIN receiver
Operating case temperature: (0℃~70℃)
Maximum link length of 300m via OM3 multimode Fiber (MMF)
Operating temperature range:
Commercial: 0℃ to +70℃
Industrial: -40℃ to +85℃

Product Specification

Absolute Maximum Ratings (TC=25℃, unless otherwise noted)

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings will cause permanent damage and/or adversely affect device reliability.

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Storage Temperature

TS

-40

-

+85

ºC

Operating Relative Humidity

RH

0

-

+85

%

No

condensation

General Specifications (Ta, unless otherwise noted)

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Operating Case Temperature	Tc	0	-	70	ºC
Power Supply Voltage	Vcc	3.15	3.3	3.45	V
Lane Baud Rate	BRLANE		10.3125		Gbps

Electrical Characteristics

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Power Consumption				1	W
Supply Current	Icc			300	mA

Transmitter Characteristics (Ta, unless otherwise noted)

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Center wavelength	λ	840		860	nm
RMS spectral width	Pm			0.6	nm
Average optical power	Pavg	-8.2		-1	dBm
Optical modulation amplitude	OMA	-6.4		3	dBm
Average launch power of OFF transmitter	Poff			-30	dBm
Extinction ratio	ER	4			dB
Optical return loss tolerance				12	dB

Receiver CharacteristicS (Ta, unless otherwise noted)

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Center wavelength	λ	840	850	860	nm
Damage threshold		3.4			dBm

Receive power overload		-1		dBm
Receiver reflectance			-12	dB
Receiver sensitivity	SENS		-9.9	dBm	Note1
LOS Assert	LOSA	-25		dBm
LOS De-Assert	LOSD		-11.5	dBm
LOS Hysteresis	LOSH	0.5		dB

Note 1: Measured with a 10.3125G, PRBS-31 NRZ, ER>3dB, BER<10E-12.

PIN Descriptions

Figure 1 – Pin Definitions

PIN	Logic	Symbol	Name / Description	Notes
1		VeeT	Module Transmitter Ground
2	LVTTL-O	TX_Fault	Module Transmitter Fault
3	LVTTLI	TX_Dis	Transmitter Disable, Turns off transmitter laser output
4	LVTTL-I/O	SDA	2-Wire Serial Interface Data Line
5	LVTTL-I	SCL	2-Wire Serial Interface Clock
6		MOD_DEFO	Module Definition, Grounded in the module
7	LVTTL-I	RSO	Receiver Rate Select
8	LVTTL-O	RX Los	Receiver Loss of Signal Indication Active LOW
9	LVTTL-I	RS1	Transmitter Rate Select (not used)
10		VeeR	Module Receiver Ground
11		VeeR	Module Receiver Ground
12	CML-O	RD-	Receiver Inverted Data Output

PIN	Logic	Symbol	Name / Description	Notes
13	CML-O	RD+	Receiver Data Output
14		VeeR	Module Receiver Ground
15		VccR	Module Receiver 3.3 V Supply
16		VccT	Module Receiver 3.3 V Supply
17		VeeT	Module Transmitter Ground
18	CML-I	TD+	Transmitter Non-Inverted Data Input
19	CML-I	TD-	Transmitter Inverted Data Input
20		VeeT	Module Transmitter Ground

Digital Diagnostic Specification

Parameter	Symbol	Accuracy	Units	Notes
Transceiver Case Temperature	DMI_TEMP	±3	deg.C
Supply voltage monitor absolute error	DMI _VCC	±3	%
Channel Bias current monitor	DMI_IBIAS	±10	%
Channel RX power monitor absolute error	DMI_RX	±3	dB
Channel TX power monitor absolute error	DMI_TX	±3	dB