SFP fiber module,1.25G,SM 1310nm,20KM

SFP  fiber module,1.25G,SM 1310nm

  • Description
  • Inquiry

1.25G SFP  fiber module Transceiver 

 

(1310nm Single Mode) SFP fiber module

SFP fiber module Feature:

l        SFP  fiber module package with LC connector 

l        SFP  fiber module 1310nm FP laser and PIN photo detector 

l        550m transmission with MMF  

l        10Km~20Km transmission with SMF 

l        +3.3V single power supply 

l        LVPECL compatible data input/output interface 

l        Low EMI and excellent ESD protection 

l        laser safety standard IEC-60825 compliant 

l        Compatible with RoHS 

Application

  • Ethernet
  • Telecom

Description:

The SFP  fiber module supports dual data-rate of 1.25Gbps/1.0625Gbps and 550 m transmission distance with 50/125 um or 300m with 62.5/125um MF.

The SFP  fiber module transceiver consists of two sections: The transmitter section incorporates a VECSEL laser. the receiver section consists of a PIN photodiode integrated with a trans-impedance preamplifier (TIA).

All modules satisfy class I laser safety requirements. The optical output can be disabled by a TTL logic high-level input of Tx Disable.  Tx Fault indicates that degradation of the laser. Loss of signal (LOS) output indicates the loss of an input optical signal of receiver.

The standard serial ID information compatible with SFP MSA describes the transceiver’s capabilities, standard interfaces, manufacturer and other information. The host equipment can access this information via the 2-wire serial bus. For more information, please refer to SFP Multi-Source Agreement (MSA)

 

Performance specifications:

Absolute Maximum Ratings

Parameter

Symbol

Minimum

Maximum

Units

Storage Temperature

Tst

-40

+85

°C

Operating Temperature

Top

0

+70

°C

Supply Voltage

Vcc

0

+3.6

V

Input voltage

Vin

GND

Vcc

Lead Soldering

Temperature & Time

240/10

°C/s

 

Operation Environment

Parameter

Symbol

Minimum

Maximum

Units

Supply Voltage

Vcc

3.15

3.45

V

Ambient

operating Temperature

Top

0

+70

°C

Operating Relative Humidity

5

95

%

 

Transmitter Section:

(Ambient Operating Temperature 0°C to +70°C, Vcc =3.3 V)

Parameter

Symbol

Min.

Typ.

Max.

Units

Data rate

1250

Mb/s

Center Wavelength

lo

830

850

860

nm

Spectral width (RMS)

Dl

0.85

nm

Average Optical

Output Power

Po

-8

-3

dBm

Extinction Ratio

Er

10

dB

Rise/Fall Time(20%~80%)

Tr/Tf

0.26

ns

Total jitter

Tj

0.43

UI

Optical Eye Diagram

IEEE 802.3z and ANSI Fibre Channel Compatible

Input differential impendence

Zdiff

100

Ohm

TX disable Disable

2.0

Vcc

V

Enable

0

0.8

V

Fault Fault

2.0

Vcc+0.8

V

Normal

0

0.8

V

 

Receiver Section:

(Ambient Operating Temperature 0°C to +70°C, Vcc =3.3 V)

Parameter

Symbol

Min.

Typ.

Max.

unit

Data rate

1250

Mb/s

Wavelength

l

770

850

870

nm

Maximum Input Power

Pmax

0

dBm

Receiver Sensitivity

Pmin

-24

-22

dBm

Output differential impendence

Zdiff

100

Ohm

LOSS Thresholds

LOSSD

-31

dBm

LOSSA

-34

EEPROM INFORMATION:

 

Addr

Field Size

(Bytes)

Name of Field

HEX

Description

0

1

Identifier

03

SFP

1

1

Ext. Identifier

04

MOD4

2

1

Connector

07

LC

3-10

8

Transceiver

00 00 00 02 12 00 0D 01

Transmitter Code

11

1

Encoding

01

8B10B

12

1

BR, nominal

0D

1250M bps

13

1

Reserved

00

14

1

Length (9um)-km

0A/14/28

10km/20km/40km

15

1

Length (9um)

64/C8/FF

16

1

Length (50um)

37

550m

17

1

Length (62.5um)

37

550m

18

1

Length (copper)

00

19

1

Reserved

00

20-35

16

Vendor name

57 49 4E 54 4F 50 20 20

20 20 20 20 20 20 20 20

36

1

Reserved

00

37-39

3

Vendor OUI

00 00 00

40-55

16

Vendor PN

xx xx xx xx xx xx xx xx

xx xx xx xx xx xx xx xx

ASC II

56-59

4

Vendor rev

31 2E 30 20

V1.0

60-61

2

Wavelength

05 1E

1310nm

62

1

Reserved

00

63

1

CC BASE

XX

Check sum of byte 0~62

64-65

2

Options

00 1A

LOS, TX_DISABLE, TX_FAULT

66

1

BR, max

32

50%

67

1

BR, min

32

50%

68-83

16

Vendor SN

00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00

Unspecified

84-91

8

Vendor date code

XX XX XX 20

Year, Month, Day

92-94

3

Reserved

00

95

1

CC_EXT

XX

Check sum of byte 64~94

96-255

160

Vendor specific

Pin Description:

Pins

Name

Discription

NOTE

1

VeeT Transmitter Ground

2

Tx Fault Transmitter Fault Indication

1

3

Tx Disable Transmitter Disable

2

4

MOD DEF2 Module Definition 2

3

5

MOD DEF1 Module Definition 1

3

6

MOD DEF0 Module Definition 0

3

7

Rate Select Not Connected

8

LOS Loss of Signal

4

9

VeeR Receiver Ground

10

VeeR Receiver Ground

11

VeeR Receiver Ground

12

RD- Inv. Received Data Output

5

13

RD+ IReceived Data Output

5

14

VeeR Receiver Ground

15

VccR Receiver Power

16

VccT Transmitter Power

17

VeeT Transmitter Ground

18

TD+ Transmit Data Input

6

19

TD- Inv. Transmit Data Input

6

20

VeeT Transmitter Ground

Notes:

1. TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 0.8V.

2. TX Disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7k~10kΩ resistor. Its states are:

Low (0~0.8V): Transmitter on

(>0.8V, <2.0V): Undefined

High (2.0~3.465V): Transmitter Disabled

Open: Transmitter Disabled

3. MOD-DEF 0,1,2 are the module definition pins. They should be pulled up with a 4.7k~10kΩ resistor 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 serial interface for serial ID

4. LOS is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates loss of signal. In the low state, the output will be pulled to less than 0.8V.

5. These are the differential receiver output. They are internally AC-coupled 100Ω differential lines which should be terminated with 100Ω (differential) at the user SERDES.

6. These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω differential termination inside the module.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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