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CLASS C++ GPON OLT SFP Module
Class c++, SFP, 20Km, 

The Class C++ SFP module is mainly used on Gigabit-capable Passive Optical Networks (GPON) networks. It is Class C++ type, with 20Km transmitting distance.

Overview

The Class C++ SFP module is mainly used on Gigabit-capable Passive Optical Networks (GPON) networks. It is Class C++ type, with 20Km transmitting distance.

Features:

Single fiber bi-directional data links asymmetric TX 2488Mbps/RX1244Mbps application

1490nm continuous-mode DFB laser transmitter and 1310nm burst-mode APD-TIA receiver

Small Form Factor Pluggable package with SC/UPC Connector

Reset burst-mode receiver design support more than 15dB dynamic range

0 to 70°C operating case temperature

Single 3.3V power supply

Digital diagnostic monitoring interface

Digital burst RSSI function to monitor the input optical power level

LVPECL compatible data input/output interface

LVTTL transmitter disable control

LVTTL transmitter laser fault alarm

LVTTL receiver Signal Detect (SD) indication response within 50ns.

Low EMI and excellent ESD protection

Class I laser safety standard IEC-60825 compliant


Standards

Complies with SFP Multi-Source Agreement (MSA) SFF-8074i

Complies with SFF-8472 Rev 9.5

Complies with ITU-T G.984.2 Amendment 2

Complies with FCC 47 CFR Part 15, Class B

Complies with FDA 21 CFR 1040.10 and 1040.11

ABSOLUTE MAXIMUM RATING

Parameter

Symbol

Min.

Max.

Unit

Notes

Storage Ambient Temperature

TSTG

-40

85

°C

Operating Case Temperature

Tc

0

70

°C

Operating Humidity

OHS

5

95

%

Power Supply Voltage

VCC

0

3.6

V

Receiver Damaged Threshold

+5

dBm


RECOMMENDED OPERATING CONDITION

Parameter

Symbol

Min.

Typ.

Max.

Unit

Notes

Power Supply Voltage

VCC

3.13

3.3

3.47

V

Power Supply Current



350

500

mA


Operating Case Temperature

Tc

0

70

°C

Operating Humidity Range

OHO

5

85

%

Nominal Data Rate

RX 1244.16

TX 2488.32

Mbit/s




TRANSMITTER OPTICAL CHARACTERISTICS

Parameter

Symbol

Min.

Typ.

Max.

Unit

Notes

Optical Center Wavelength

λC

1480

1500

nm

Optical Spectrum Width (-20dB)

∆λ

1

nm

Side Mode Suppression Ratio

SMSR

30

dB

Average Launch Optical Power

AOP

+5.5

+10

dBm

BOL, Normal Temperature

+4.5

+10

dBm

EOL, 0~70°C

Power-OFF Transmitter Optical Power

-39

dBm

Launched into SMF

Extinction Ratio

ER

8.2

dB

PRBS 223-1+72CID @2.488Gbit/s

Tolerance to Transmitter Incident Light

-15

dB

Transmitter Reflectance

-10

dB

Transmitter and Dispersion Penalty

TDP

1

dB

Transmit on 20km SMF

Optical Waveform Diagram

ITU-T G.984.2

Figure 1

TRANSMITTER ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Min.

Typ.

Max.

Unit

Notes

Data Input Differential Swing

600

1600

mV

LVPECL input, AC coupled

Input Differential Impedance

90

100

110

Transmitter Disable Voltage - Low

0

0.8

V

Transmitter Disable Voltage - High

2.0

VCC

V

Transmitter Fault Alarm Voltage - Low

0

0.4

V

Transmitter Fault Alarm Voltage – High

2.4

VCC

V






RECEIVER OPTICAL CHARACTERISTICS

Parameter

Symbol

Min.

Typ.

Max.

Unit

Notes

Operating Wavelength

1260

1360

nm

Sensitivity (BOL, Normal Temperature)

SEN

-31

dBm


PRBS 223-1+72CID@1.244Gbps BER≤1×10-10

Sensitivity (EOL, 0~70°C)

SEN

-30

dBm

Saturation Optical Power

SAT

-12

dBm

Dynamic Range

15

dB

Figure 2

Loss Of Signal De-assert Level

-33

dBm

Loss Of Signal Assert Level

-45

dBm

Loss Of Signal Hysteresis

0.5

6

dB

Receiver Reflectance

-12

dB


RECEIVER ELECTRIAL CHARACTERISTICS

Parameter

Symbol

Min.

Typ.

Max.

Unit

Notes

Data Output Voltage – Low(-Vcc)

-1.81

-1.62

V

Data Output Voltage – High(-Vcc)

-1.02

-0.88

V

Data Output Differential Swing

400

1600

mV

LVPECL output, DC coupled

Reset width

TRESET

16

bits

Reset-Low

0

0.4

V

Reset-High

2.4

Vcc

V

Receiver Amplitude Recovery

TRECOVERY

32

bits

Refer to the Reset signal falling edge

Signal Detect Assert Time

50

ns

Signal Detect De-assert Time

12.8

ns

Refer to the Reset signal rising edge

Signal Detect Voltage-Low

0

0.4

V

Signal Detect Voltage-High

2.4

Vcc

V

RSSI Trigger-Low

0

0.8

V

RSSI Trigger-High

2

Vcc

V

Optical Signal During Time

Tont

300

ns

RSSI Trigger width

TW

300

Tont-TD

ns

RSSI Trigger Delay

TD

0

6.4

ns

I2C Access Prohibited Time

500

μs


PIN DESCRIPTION

PIN

Name

Description

Notes

1

VEET

Transmitter Ground

2

TX Fault

Transmitter Fault Indication

High: abnormal; Low: normal

3

TX Disable

Transmitter Disable

High: transmitter disable; Low: transmitter enable

4

MOD-DEF2

Module Definition 2

The data line of two wire serial interface

5

MOD-DEF1

Module Definition 1

The clock line of two wire serial interface

6

MOD-DEF0

Module Definition 0

Connected to Ground in the transceiver

7

Reset

Receiver Reset

High: reset the receiver

8

SD

Signal Detect

High: signal detected; Low: loss of signal;

9

RSSI Trigger

RSSI Trigger for Transceiver A/D Conversion

High: enable RSSI A/D conversion

10

VEER

Receiver Ground

11

VEER

Receiver Ground

12

RD-

Inv. Receiver Data Out

LVPECL logic output, DC coupled

13

RD+

Receiver Data Out

LVPECL logic output, DC coupled

14

VEER

Received Ground

15

VCCR

Receiver Power

16

VCCT

Transmitter Power

17

VEET

Transmitter Ground

18

TD+

Transmit Data In

LVPECL logic input, AC coupled

19

TD-

Inv. Transmit Data In

LVPECL logic input, AC coupled

20

VEET

Transmitter Ground


DIGITAL DIAGNOSTIC MONITORING INTERFACE

Parameter

Range

Accuracy

Calibration

Note

Temperature

0 to 70°C

±3°C

Internal

1LSB = 1/256°C

Voltage

0 to 6.55V

±3%

Internal

1LSB = 0.1mV

Bias Current

0 to 100mA

±10%

Internal

1LSB = 2uA

TX Power

0 to 8dBm

±2dB

Internal

1LSB = 0.1uW

RX Power Monitor

-31 to -12dBm

±3dB

External

1LSB = 0.1uW

Without Pluggable optical fiber