Optical Fiber RoHS Compliant 25GB/S SFP28 Er Lite 1310nm 30km Optical Transceiver

• Usage: Telephone, Computer, Workstation, Server, Mobile phone, Laptop
• Type: Wireless
• Support Network: GSM
• Information content: Data
• Certification: CE, ISO, RoHS
• Condition: New
• Model NO.: GFC-OLSP312XL-CD30
• Delivery Time: 3-7 Days
• Warranty: 3 Years
• Distance: 30km
• Transport Package: Antistatic Bag
• Specification: 25G
• Trademark: GFC
• Origin: Zhejiang China
• HS Code: 8517706000
• Production Capacity: 50K/Month

Product Description

Product Features

• Supports 24.33Gb/s to 25.78Gb/s bit rates with CDR engaged mode
• Supports 9.95 Gb/s to 10.31 Gb/s bit rates with CDR bypassed mode
• Compliant with MSA SFP+ Specification SFF-8402
• Single 3.3V Power supply
• Duplex LC Connector Interface, Hot Pluggable
• 1310nm DFB transmitter, APD-TIA Receiver
• Applicable for 30Km SMF connection
• Built-in dual CDR
• Low power consumption<1.2W
• Single 3.3V power supply
• Operating case temperature: 0 to 70 . C

Applications

• CPRI Option 10
• 25GbE&10GbE Optical Link
• Other optical links

Product Descriptions
GFC-OLSP312XL-CD30, single-mode transceiver is SFP28 module for duplex optical data communications support 24.33Gb/s and 25.78Gb/s with CDR engaged, while, 10G ethernet optical data communication can be supported when CDR is bypassed. It is with the SFP+ 20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I2C. It has built-in clock and data recovery (CDR). This module is designed for single-mode fiber and operates at a nominal wavelength from 1295nm to 1310nm.

The transmitter section uses a 1310nm multiple quantum well DFB laser and is a class 1 laser compliant according to International Safety Standard IEC 60825. The receiver section uses an integrated InGaAs detector preamplifier (IDP) mounted in an optical header and a limiting post-amplifier IC

Functional Diagram

Absolute Maximum Ratings
 

Parameter	Symbol	Min.	Max.	Unit	Note
Supply Voltage	Vcc	-0.5	4.0	V
Storage Temperature	TS	-40	85	°C
Relative Humidity	RH	0	85	%

Note: Stress in excess of the maximum absolute ratings can cause permanent damage to the transceiver.


 

General Operating Characteristics

 

Parameter	Symbol	Min.	Typ	Max.	Unit	Note
Data Rate				25.78	Gb/s
Supply Voltage	Vcc	3.13	3.3	3.47	V
Supply Current	Icc5			360	mA
Operating Case Temp.	Tc	0		70	°C

Electrical Characteristics (_TOP(C) = 0 to 70 ºC,V_CC = 3.13 to 3.47 V)
 

Parameter		Symbol	Min.	Typ	Max.	Unit	Note
Transmitter
Differential data input swing		VINPP	200		900	mVpp	1
Tx Disable input	H	TDH	2.0		Vcc+0.3	V
	L	TDL	0		0.8
Tx Fault output	H	TFH	2.0		Vcc+0.3	V	2
	L	TFL	0		0.8
Input differential impedance		Rin		100		Ω
Receiver
Differential data output swing		Vout,pp	300		1000	mVpp	3
Rx Los Output	H	VOH	2.0		Vcc+0.3	V	2
	L	VOL	-0.3		0.8

Note:

1. TD+/- are internally AC coupled with 100Ω differential termination inside the module.
2. Tx Fault and Rx LOS are open collector outputs, which should be pulled up with 4.7k to 10kΩ resistors on the host board. Pull up voltage between 2.0V and Vcc+0.3V.
3. RD+/- outputs are internally AC coupled, and should be terminated with 100Ω (differential) at the user SERDES.

Optical Characteristics (_TOP(C) = 0 to 70 ºC, V_CC = 3.13 to 3.47 V)
 

Parameter	Symbol	Min.	Typ	Max.	Unit	Note
Transmitter
Operating Wavelength	λ	1295	1310	1325	nm
Ave. output power (Enabled)	PAVE	0		4.5	dBm
Side-Mode Suppression Ratio	SMSR	30			dB
Extinction Ratio	ER	4			dB
RMS spectral width(-20dB)	Δλ			1	nm
Dispersion penalty	TDP			3.2	dB
Receiver
Operating Wavelength		1260	1310	1355	nm
Receiver Sensitivity(OMA)	PSen			-16	dBm	1
Receiver Overload	Pmax			-7	dBm
LOS Assert	Pa	-30			dBm
LOS De-assert	Pd			-17	dBm
LOS Hysteresis	Pd-Pa	0.5			dB

Notes:
1. Sensitivity is measured at 25.78Gb/s, BER less than5E-5 with PRBS 231-1
 

EEPROM

The serial interface uses the 2-wire serial CMOS EEPROM protocol. When the serial protocol is activated, the host generates the  serial clock signal (SCL). The positive edge clocks data into those segments of the EEPROM that are not writing protected within the SFP28 transceiver. The negative edge clocks data from the SFP28 transceiver. The serial data signal (SDA) is bi-directional for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocol activation. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially.
The Module provides diagnostic information about the present operating conditions. The transceiver generates this diagnostic data by digitization of internal analog signals. Calibration and alarm/warning threshold data is written during device manufacture. Received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring all are implemented. If the module is defined as external calibrated, the diagnostic data are raw A/D values and must be converted to real world units using calibration constants stored in EEPROM locations 56 - 95 at wire serial bus address A2H. The digital diagnostic memory map specific data field define as following .For detail EEPROM information, please refer to the related document of SFF 8472 Rev 12.2.

Operations about Retimer/CDR Rate Select Logic
 

Logic OR of RS0 Pin and Bit110.3 of A2H	Logic OR ofRS1 Pin and Bit118.3 ofA2H	RX Data Rate	TX Data Rate	Status of RX CDR	Status of TX CDR
High/1	High/1	24.33/25.78G	24.33/25.78G	CDR Engaged	CDR Engaged
High/1	Low/0	24.33/25.78G	9.95/10.31G	CDR Engaged	CDR Bypassed
Low/0	High/1	9.95/10.31G	24.33/25.78G	CDR Bypassed	CDR Engaged
Low/0	Low/0	9.95/10.31G	9.95/10.31G	CDR Bypassed	CDR Bypassed

Package Dimensions