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125M 1310nm 2km SGMII SFP Transceiver SPT-PH3102-02

1550nm 1G fiber optic transceiver

SPT-PH3102-02

SFP 100Base-FX 1310nm 2km Reach

Features

  • Build-in PHY supporting SGMII Interface
  • 100BASE-FX operation
  • 1310nm FP laser and PIN photo-detector
  • 2km transmission with MMF
  • Standard serial ID information Compatible with SFP MSA
  • SFP MSA package with duplex LC connector
  • With Spring-Latch for high density application
  • Very low EMI and excellent ESD protection
  • +3.3V single power supply
  • Operating case temperature: 0 to +70°C

Applications

  • Switch to Switch interface
  • Switched backplane applications
  • Router/Server interface
  • Gigabit Ethernet To Fast Ethernet
  • Other optical transmission systems

Standard

  • Compatible with SFP MSA
  • Compatible with IEEE 802.3ah-2004

Description

The SFP transceiver is high performance, cost effective modules. It is designed for100BASE-FX Applications of 2km with MMF. The transceiver consists of two sections: The standard SFP part and thePHY part built with SGMII interface. The optical output can be disabled by a TTL logic high-level input of Tx Disable, and the system also can disable the module via I2C. Tx Fault is provided to indicate that degradation of the laser. Loss of signal (LOS) output is provided to indicate the loss of an input optical signal of receiver or the link status with partner. The system can also get the LOS(or Link)/Disable/Fault information via I2C register access. 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 CMOS EEPROM protocol. For further information, please refer to SFP Multi-Source Agreement (MSA).

Absolute Maximum Ratings

Stress in excess of the maximum absolute ratings can cause permanent damage to the module

Parameter

Symbol

Min

Max

Unit

Maximum Supply Voltage

Vcc

-0.5

3.6

V

Storage Temperature

TS

-40

100

Relative Humidity

RH

0

85

%

Recommended Operating Conditions

Parameter

Symbol

Min

Typical

Max

Unit

Operating Case Temperature

TC

0

 

70

Power Supply Voltage

VCC

3.1

3.3

3.5

V

Power Supply Current

Icc

 

 

420

mA

Data Rate

 

 

125

 

Mbps

Optical and Electrical Characteristics

Parameter

Symbol

Min.

Typical

Max.

Unit

Notes

 

Transmitter

 

Centre Wavelength

λC

1261

1310

1360

nm

 

 

Average Output Power

P0ut

-20

 

-14

dBm

2

 

Spectral Width (RMS)

σ

 

 

7.7

nm

2

 

Extinction Ratio

EX

10

 

17

dB

 

 

Rise/Fall Time

Tr/Tf

 

 

3

ns

3

 

 

 

Output Optical Eye

 

Compatible with IEEE 802.3ah-2004

 

4

 

Data Input Swing Differential

(SGMII Series interface)

 

VIN

 

200

 

 

2100

 

mV

 

5

 

Input Differential Impedance

ZIN

80

100

120

Ω

 

 

 

TX Disable

Disable

 

2.0

 

Vcc

V

 

 

Enable

 

0

 

0.8

V

 

 

 

TX Fault

Fault

 

2.0

 

Vcc+0.3

V

 

 

Normal

 

0

 

0.8

V

 

 

Receiver

 

Centre Wavelength

λC

1260

 

1570

nm

 

 

Receiver Sensitivity

 

 

 

-31

dBm

6

 

Receiver Overload

 

-10

 

 

dBm

6

 

LOS De-Assert

LOSD

 

 

-32.5

dBm

 

 

LOS Assert

LOSA

-45

 

 

dBm

 

 

LOS Hysteresis

 

1

 

4.5

dB

 

 

 

Total Jitter

(SGMII Series Interface)

 

Tj

 

 

 

0.43

 

UI

 

 

Data Output Swing Differential

VOUT

370

 

2000

mV

5

 

 

LOS

High

 

2.0

 

Vcc+0.3

V

 

 

Low

 

0

 

0.8

V

 

                                   

Notes:

2. The optical power is launched into MMF 50/125um.

3. Unfiltered, measured with 4B/5B code for 125Mbps

4. Measured with 4B/5B code for 125Mbps.

5. PECL logic, internally AC coupled.

6. Measured with 4B/5B code for 125Mbps, worst-case extinction ratio, BER ≤1×10-10

Diagnostics

Parameter

Range

Unit

Accuracy

Calibration

Temperature

0 to 70

±3℃

Internal / External

Voltage

0 to VCC

V

±3%

Internal / External

Bias Current

0 to 100

mA

±10%

Internal / External

TX Power

-12 to -18

dBm

±3 dB

Internal / External

RX Power

-30 to -12

dBm

±3 dB

Internal / External

EEPROM Section

The optical transceiver contains an EEPROM. It provides access to sophisticated identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer, and other information.

The serial interface uses the 2-wire serial CMOS EEPROM protocol defined for the MCU family of components. When the serial protocol is activated, the host generates the serial clock signal (SCL, Mod Def 1). The positive edge clocks data into those segments of the EEPROM that are not write-protected within the SFP transceiver. The negative edge clocks data from the SFP transceiver. The serial data signal (SDA, Mod Def 2) is bi-directional for serial data transfer. The hostuses SDA in conjunction with SCL to mark the start and end of serial protocol activation. The memories are organized as a seriesof 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 diagnosticdata 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. The diagnostic data are raw A/D values and must be converted to real world units usingcalibration constants stored in EEPROM locations 56 – 95 at wire serial bus address A2h. The digital diagnostic memory map specific data field define as following.

 

Pin Definitions

Pin Diagram

Pin Descriptions

Pin

Signal Name

Description

Plug Seq.

Notes

1

VEET

Transmitter Ground

1

 

2

TX FAULT

Transmitter Fault Indication

3

Note1

3

TX DISABLE

Transmitter Disable

3

Note2

4

MOD_DEF(2)

SDA Serial Data Signal

3

Note3

5

MOD_DEF(1)

SCL Serial Clock Signal

3

Note3

6

MOD_DEF(0)

TTL Low

3

Note3

7

Rate Select

Not Connected

3

 

8

LOS

Loss of Signal

3

Note 4

9

VEER

Receiver ground

1

 

10

VEER

Receiver ground

1

 

11

VEER

Receiver ground

1

 

12

RX-

Inv. Received Data Out

3

Note 5

13

RX+

Received Data Out

3

Note 5

14

VEER

Receiver ground

1

 

15

VCCR

Receiver Power Supply

2

 

16

VCCT

Transmitter Power Supply

2

 

17

VEET

Transmitter Ground

1

 

18

TX+

Transmit Data In

3

Note 6

19

TX-

Inv. Transmit Data In

3

Note 6

20

VEET

Transmitter Ground

1

 

Notes:

Plug Seq.: Pin engagement sequence during hot plugging.

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 to 0.8V): Transmitter on

(>0.8V, < 2.0V): Undefined

High (2.0 to 3.465V): Transmitter Disabled

Open: Transmitter Disabled

3) Mod-Def 0,1,2. These 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. Pull up voltage between 2.0V and

Vcc+0.3V. Logic 1 indicates loss of signal; Logic 0 indicates normal operation. In the low state, the output will be pulled to less than 0.8V.

5) RD-/+: These are the differential receiver outputs. They are internally AC-coupled 100 differential lines which should be

terminated with 100Ω (differential) at the user SERDES.

6) TD-/+: These are the differential transmitter inputs. They are internally AC-coupled, differential lines with 100Ω differential termination inside the module.

Mechanical Dimensions

Ordering information

 

Part Number

Product Description

SPT-PH3102-02

1310nm,2km,125Mbps, 0ºC ~ +70ºC

SPT-PH3102-02D

1310nm,2km,125Mbps, 0ºC ~ +70ºC, With Digital Diagnostic Monitoring

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