1.25g SFP Bidi 40km Module Tx1310/Rx1550nm

• Customization: Available
• Type: Both Wired and Wireless
• Certification: CE, ISO, RoHS, FCC
• Model NO.: LAS24-T3155(5531)S-ER(S)
• Condition: New
• Transport Package: Blister Pack
• Trademark: Linksall
• Origin: China
• HS Code: 8517706000
• Production Capacity: 100, 000 Per Year
• Package Size: 5.00cm * 5.00cm * 5.00cm
• Package Gross Weight: 1.000kg

Product Description

1.25Gb/s BIDI SFP Transceiver 40KM
 LAS24-T3155(5531)S-ER(I)/ LAS24-T3149(4931)S-ER(I)

Features

• Single Mode bi-directional Transmission
• SFP Multi-source Package with LC or SC Receptacle
• 40KM up to 1.25Gb/s Data Links
• 1310nm or 1490nm, 1550nm DFB laser transmitter
• PIN photo-detector
• Hot-Pluggable Capability
• Metal Enclosure, Excellent EMI & ESD Protection
• Monitoring Interface Compliant with SFF-8472
• Maximum Power <1W
• Industrial / Commercial operating temperature range: -40°C to +85°C / 0°C to +70°C Version available
• RoHS compliant and Lead FreeRoHS Compliant Products

 

Applications

 

• Gigabit Ethernet
• 1x Fiber Channel
• Metro/Access Networks
• CPRI option 2/OBSAI 2x
• Other Optical Links 

Product Description
Link-all's 40KM BIDI SFP transceivers are high performance, cost effective modules supporting data rateupto 1.25Gbps and 40KM transmission distance with SMF.
The transceiver consists of three sections: a DFB laser transmitter, a PIN photodiode integrated with a
trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety
requirements. The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. Forfurther information, please refer to SFP MSA.

Absolute Maximum Ratings  

Parameter

Symbol

Min.

Typical

Max.

Unit

Storage Temperature

TS

-40

+85

°C

Supply Voltage

VCC

-0.5

3.6

V

Relative Humidity

RH

0

85

%

Recommended Operating Environment  

Parameter

Symbol

Min.

Typical

Max.

Unit

Case operating Temperature

Industrial

TOP

-40

+85

°C

Commercial

0

+70

°C

Supply Voltage

VCC

3.135

3.465

V

Supply Current

Icc

300

mA

Maximum Power

Pmax

1

W

Optical Parameters(TOP= 0 to +70°C, VCC= 3.135 to 3.465 Volts)  
 

Parameter

Symb ol

Min.

Typical

Max.

Unit

Note

Transmitter

 

Center Wavelength

λc

1300

1310

1320

nm

1310nmTx

1480

1490

1500

1490nmTx

1540

1550

1560

1550nmTx

Spectral Width(-20dB)

Pm

1

nm

Side-mode Suppression Ration

SMSR

30

dB

Optical Output Power

Pout

-5

0

dBm

1

Extinction Ratio

ER

9

dB

Return Loss

12

dB

Transmitter OFF Output Power

POff

-30

dBm

Eye Mask for Optical Output

Compliant with IEEE802.3 z (class 1 laser safety)

Receiver

RX Sensitivity

Sen

-24

dBm

2

Receiver Saturation Power

Psat

0

dBm

RX_LOS De-assert

LOSD

-26

dBm

RX_LOS Hysteresis

LOSH

0.5

dB

General Specifications

Data Rate

BR

1.25

Gb/s

Bit Error Rate

BER

-12 10

Max. Supported Link Length on 9/125μm [email protected]/s

LMAX

40

km

Total System Budget

LB

19

dB

Notes:
1. The optical power is launched into SMF.2. Measured with PRBS 27-1 at 10-12BER.
 

Electrical Characteristics(TOP= 0 to +70°C, VCC= 3.135 to 3.465 Volts)

Parameter

Symbol

Min

Type

Max

Unit

Ref.

Supply Voltage

Vcc

3.135

3.3

3.465

V

Supply Current

Icc

300

mA

Transmitter

Input differential impedance

Rin

100

Differential data input swing

Vin, pp

200

1000

mV

Transmit Disable Voltage

VD

2

VCC

V

Transmit Enable Voltage

VEN

Vee

Vee+0.8

V

Receiver

Differential data output swing

Vout, pp

200

1000

mV

LOS Fault

VLOS_fault

2

Vcc

V

LOS Normal

VLOS_norm

Vee

Vee+0.8

V

Power Supply Noise Tolerance

VCCT/VCCR

Per SFP MSA

mVpp

Notes:
1. Connected directly to TX data input pins.AC coupling from pins into laser driver IC.
2. Into 100Ω differential termination.
3. Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.

Pin Function Definitions           
 

Pin No	Name		Function								Notes
1	VeeT		Transmitter Ground (Common with Receiver Ground)								1
2	TX Fault		Transmitter Fault Indication. Low normal operation, High Fault indication								2
3	TX Disable		Transmitter Disable. Laser output disabled on high or open.								3
4	MOD-DEF(2)		Module Definition 2. Data line for Serial ID.								4
5	MOD-DEF(1)		Module Definition 1. Clock line for Serial ID.								4
6	MOD-DEF(0)		Module Definition 0. Grounded within the module.								4
7	Rate Select		Not Connected
8	LOS		Loss of Signal indication. Logic 0 indicates normal operation.								5
9	VeeR		Receiver Ground (Common with Transmitter Ground)
10	VeeR		Receiver Ground (Common with Transmitter Ground)								1
11	VeeR		Receiver Ground (Common with Transmitter Ground)								1
12	RD-		Inv. Received Data Out
13	RD+		Received Data Out
14	VeeR		Receiver Ground (Common with Transmitter Ground)								1
15	VccR		Receiver Power
16	VccT		Transmitter Power
17	VeeT		Transmitter Ground								1
18	TD+		Transmit Data In
19	TD-		Inv. Transmit In
20	VeeT		Transmitter Ground (Common with Receiver Ground)								1

 

Notes:
1. Circuit ground is internally isolated from chassis ground.
2. TX Fault is an open collector/drain output, which is pulled up with a 4.7kΩ - 10kΩ resistor on the hostboard, but is grounded inside the SFP cable plug.
3. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.
4. Mod-Def 0, 1,2. These are the module definition pins. They should be pulled up with a 4.7K- 10KΩresistor on the host board. The pull-up voltage shall be VccT or VccR
Mod-Def 0 is grounded by the module to indicate that the module is present
Mod-Def 1 is the clock line of two wire serial interface for serial ID Mod-Def 2 is the data line of two wire serialinterface for serial ID
5. LOS is open collector output. Should be pulled up with 4.7kΩ - 10kΩ on host board to avoltagebetween 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

SFP Module EEPROM Information and Management
The SFP modules implement the 2-wire serial communication protocol as defined in the SFP -8472. Theserial ID information of the SFP modules and Digital Diagnostic Monitor parameters can be accessed throughthe I2C interface at address A0h and A2h. The memory is mapped in Table 1. Detailed ID information (A0h) islisted in Table 2. And the DDM specification at address A2h. For more details of the memory map and bytedefinitions, please refer to the SFF-8472,"Digital Diagnostic Monitoring Interface for Optical Transceivers".The DDM parameters have been internally calibrated.

Table 1- EEPROM Serial ID Memory Contents (A0h) 

Data Address		Length (Byte)		Name of Length			Description and Contents
Base ID Fields
0		1		Identifier			Type of Serial transceiver (03h=SFP)
1		1		Reserved			Extended identifier of type serial transceiver (04h)
2		1		Connector			Code of optical connector type (07=LC)
3-10		8		Transceiver
11		1		Encoding			NRZ(03h)
12		1		BR, Nominal			Nominal baud rate, unit of 100Mbps
13-14		2		Reserved			(0000h)
15		1		Length(9um)			Link length supported for 9/125um fiber, units of 100m
16		1		Length(50um)			Link length supported for 50/125um fiber, units of 10m
17		1		Length(62.5um)			Link length supported for 62.5/125um fiber, units of 10m
18		1		Length(Copper)			Link length supported for copper, units of meters
19		1		Reserved
20-35		16		Vendor Name			SFP vendor name: Link-all
36		1		Reserved
37-39		3		Vendor OUI			SFP transceiver vendor OUI ID
40-55		16		Vendor PN			Part Number in ASCII
56-59		4		Vendor rev			Revision level for part number
60-62		3		Reserved
63		1		CCID			Least significant byte of sum of data in address 0-62
Extended ID Fields
64-65		2		Option			Indicates which optical SFP signals are implemented (001Ah = LOS, TX_FAULT, TX_DISABLE all supported)
66		1		BR, max			Upper bit rate margin, units of %
67		1		BR, min			Lower bit rate margin, units of %
68-83		16		Vendor SN			Serial number (ASCII)
84-91		8		Date code			Link-all's Manufacturing date code
92-94		3		Reserved
95		1		CCEX			Check code for the extended ID Fields (addresses 64 to 94)
Vendor Specific ID Fields
96-127		32		Readable			Link-all specific date, read only
128-255		128		Reserved			Reserved for SFF-8079

Digital Diagnostic Monitor Characteristics

Data Address				Parameter
96-97				Transceiver Internal Temperature
98-99				VCC3 Internal Supply Voltage
100-101				Laser Bias Current
102-103				Tx Output Power
104-105				Rx Input Power

 
Regulatory Compliance
 The SFP complies with international Electromagnetic Compatibility (EMC) and international safetyrequirements and standards (see details in Table following).

Feature						Standard
Electrostatic Discharge (ESD) to the Electrical Pins						MIL-STD-883E Method 3015.7
Electrostatic Discharge (ESD) to the						IEC61000-4-2

 Duplex Receptacle

Electromagnetic Interference (EMI)					FCC Part 15 Class B					Compatible with standards
Immunity					IEC61000-4-3					Compatible with standards
Laser eye safety					FDA21CFR1040.10and1040.11 EN60950, EN (IEC) 60825-1,2					Compatible with Class I laser product
Component Recognition					UL and CE					Compatible with standards
ROHS					ROHS6					Compatible with standards

Recommended Circuit  

Address	Bytes	Name	Description
00-01	2	Temp High Alarm	MSB at low address
02-03	2	Temp Low Alarm	MSB at low address
04-05	2	Temp High Warning	MSB at low address
06-07	2	Temp Low Warning	MSB at low address
08-09	2	Voltage High Alarm	MSB at low address
10-11	2	Voltage Low Alarm	MSB at low address
12-13	2	Voltage High Warning	MSB at low address
14-15	2	Voltage Low Warning	MSB at low address
16-17	2	Bias High Alarm	MSB at low address
18-19	2	Bias Low Alarm	MSB at low address
20-21	2	Bias High Warning	MSB at low address
22-23	2	Bias Low Warning	MSB at low address
24-25	2	TX Power High Alarm	MSB at low address
26-27	2	TX Power Low Alarm	MSB at low address
28-29	2	TX Power High Warning	MSB at low address
30-31	2	TX Power Low Warning	MSB at low address
32-33	2	RX Power High Alarm	MSB at low address
34-35	2	RX Power Low Alarm	MSB at low address
36-37	2	RX Power High Warning	MSB at low address
38-39	2	RX Power Low Warning	MSB at low address
40-55	16	Reserved	Reserved for future monitored quantities
56-59	4	Rx_PWR(4)	Single precision floating point calibration data - Rx optical power. Bit 7 of byte 56 is MSB. Bit 0 of byte 59 is LSB.
60-63	4	Rx_PWR(3)	Single precision floating point calibration data - Rx optical power. Bit 7 of byte 60 is MSB. Bit 0 of byte 63 is LSB.
64-67	4	Rx_PWR(2)	Single precision floating point calibration data - Rx optical power. Bit 7 of byte 64 is MSB, bit 0 of byte 67 is LSB.
68-71	4	Rx_PWR(1)	Single precision floating point calibration data - Rx optical power. Bit 7 of byte 68 is MSB, bit 0 of byte 71 is LSB.
72-75	4	Rx_PWR(0)	Single precision floating point calibration data - Rx optical power. Bit 7 of byte 72 is MSB, bit 0 of byte 75 is LSB.
76-77	2	Tx_I(Slope)	Fixed decimal (unsigned) calibration data, laser bias current. Bit 7 of byte 76 is MSB, bit 0 of byte 77 is LSB.
78-79	2	Tx_I(Offset)	Fixed decimal (signed two's complement) calibration data, laser bias current. Bit 7 of byte 78 is MSB, bit 0 of byte 79 is LSB
80-81	2	Tx_PWR(Slope)	Fixed decimal (unsigned) calibration data, transmitter coupled output power. Bit 7 of byte 80 is MSB, bit 0 of byte81 is LSB.
82-83	2	Tx_PWR(Offset)	Fixed decimal (signed two's complement) calibration data, transmitter coupled output power. Bit 7 of byte 82 is MSB, bit 0 of byte 83 is LSB.
84-85	2	T(Slope)	Fixed decimal (unsigned) calibration data, internal module temperature. Bit 7 of byte 84 is MSB, bit 0 of byte 85 is LSB.
86-87	2	T(Offset)	Fixed decimal (signed two's complement) calibration data, internal module temperature. Bit 7 of byte 86 is MSB, bit 0 of byte 87 is LSB.
88-89	2	V(Slope)	Fixed decimal (unsigned) calibration data, internal module supply voltage. Bit 7 of byte 88 is MSB, bit 0 of byte 89 is LSB.
90-91	2	V(Offset)	Fixed decimal (signed two's complement) calibration data, internal module supply voltage. Bit 7 of byte 90 is MSB. Bit 0 of byte 91 is LSB.
92-95	4	Reserved	Reserved

 Ordering Information

Ordering P/Ns				Description
LAS24-T3155S-ER				1.25Gb/s SFP Transceiver 1310nmTx 1550nmRx 40KM DDM, LC/UPC Receptacle, Commercial Temperature
LAS24-T5531S-ER				1.25Gb/s SFP Transceiver 1550nmTx 1310nmRx 40KM DDM, LC/UPC Receptacle, Commercial Temperature
LAS24-T3149S-ER				1.25Gb/s SFP Transceiver 1310nmTx 1490nmRx 40KM DDM, LC/UPC Receptacle, Commercial Temperature
LAS24-T4931S-ER				1.25Gb/s SFP Transceiver 1490nmTx 1310nmRx 40KM DDM, LC/UPC Receptacle, Commercial Temperature
LAS24-T3155S-ERI				1.25Gb/s SFP Transceiver 1310nmTx 1550nmRx 40KM DDM, LC/UPC Receptacle, Industrial Temperature
LAS24-T5531S-ERI				1.25Gb/s SFP Transceiver 1550nmTx 1310nmRx 40KM DDM, LC/UPC Receptacle, Industrial Temperature
LAS24-T3149S-ERI				1.25Gb/s SFP Transceiver 1310nmTx 1490nmRx 40KM DDM, LC/UPC Receptacle, Industrial Temperature
LAS24-T4931S-ERI				1.25Gb/s SFP Transceiver 1490nmTx 1310nmRx 40KM DDM, LC/UPC Receptacle, Industrial Temperature

Notes:
If you need more customized services, please contact us.
Warnings
Handling Precautions:
This device is susceptible to damage as a result of electrostatic discharge (ESD). A static free environment ishighly recommended. Follow guidelines according to proper ESD procedures.
Laser Safety:
Radiation emitted by laser devices can be dangerous to human eyes. Avoid eye exposure to direct or indirectradiation.
Notice:
The information provided on this page contains the product target specifications which are subject to changewithout notice.
Check with Link-all Sales Office for product updates, changes in specifications, sample availability andproduction release dates.