20210707041735907

GPON OLT Optical Transceiver

GPON OLT Optical Transceiver

INFORMATION

GPON OLT C+++

Features

Single fiber bi-directional
data links asymmetric TX 2500Mbps/RX1250Mbps application

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

Small Form Factor Pluggable
package with SC/UPC Connector

Single 3.3V power supply

Digital diagnostic
monitoring interface

Low EMI and excellent ESD
protection

RoHS6 Compliance

LVPECL compatible data
input/output interface

Class I laser safety
standard IEC-60825 compliant

LVTTL fast receiver Signal
Detect (SD) indication response

LVTTL transmitter disable
control and transmitter laser fault alarm

u  Digital
burst RSSI function to monitor the input optical power level

Applications

Gigabit Ethernet Passive
Optical Networks (GPON)

u  Gigabit-Capable
Passive Optical Networks Class C+++ 60km 17~32dB attenuation range

Standards

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

Complies with IEEE
802.3ah 

Complies with FCC 47 CFR
Part 15, Class B

Complies with FDA 21 CFR
1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50,
dated June 24, 2007

Complies with SFF-8472

Compatible with
TR-NWT-000870 4.1 ESD sensitivity classification Class2.

u  Compatible
with Telcordia GR-468-CORE

Ordering information

Part. No

Specifications

Package

Class

Temperature

(°C)

Reach

(km)

DDM

C+++ GPON SFP

SFP

C+++

-5~70

20~60

Y

C++ GPON SFP

SFP

C++

-5~70

20~40

Y

C+ GPON SFP

SFP

C+

-5~70

20

Y

B+ GPON SFP

SFP

B+

-5~70

10

Y

Specification

Absolute Maximum Ratings

Parameter

Symbol

Min

Max

Unit

Storage Ambient Temperature

TSTG

-40

85

°C

Storage Humidity

HS

5

90

%

Operating Humidity

HO

5

85

%

Power Supply Voltage

VCC

0

+3.6

V

Receiver Damaged Threshold

 

+6

 

dBm


Recommended Operating Conditions

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Operating Case Temperature

Tc

-5

 

70

°C

 

-40

 

85

 

Power Supply Voltage

VCC

3.135

3.3

3.465

V

 

Supply Current

ICC

 

 

500

mA

 

Power Consumption

PW

 

 

1.65

W

 

Data Rate

 

 

2.5

 

Gbps

 


Electrical Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter Differential Input Voltage

 

300

 

2400

mV

 

Receiver Differential Output Voltage

 

500

 

1200

mV

LVPECL, DC Coupled

Transmit Fault Alarm Voltage

VOH

2.4

 

VCC+0.3

V

LVTTL

VOL

0

 

0.4

V

LVTTL

Transmit
Disable Voltage

VIH

2

 

VCC+0.3

V

LVTTL

VIL

0

 

0.8

V

LVTTL

Input
Differential Impedance

 

90

100

110

Ω

 

Transmit
Disable Assert Time

TOFF

 

 

10

us

 

Loss
Of Signal Voltage

VOH

2.4

 

VCC

V

LVTTL

VOL

0

 

0.4

V

LVTTL

Loss Of
Signal Assert Time

TD

 

500

 

us

 

Loss Of
Signal De-assert Time

TA

 

500

 

us

 


Optical
transmitter Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Launched Power (avg.)

POUT

+7

 

+9

dBm

C+++

+5

 

+7

C++

+3

 

+5

C+

Operating
Wavelength Range

λC

1480

1490

1500

nm

 

Spectral
Width (-20dB)

∆λ

 

 

1

nm

 

Side Mode
Suppression Ratio

SMSR

30

 

 

 

 

Extinction
Ratio

ER

9

 

 

dB

PRBS 27-1
@1.25Gbit/s

Transmitter
and Dispersion Penalty

TDP

 

 

2.3

dB

Transmit on 80km
SMF

Optical
Output Power after TX Disable

PDIS

 

 

-32

dBm

 

Output Eye Diagram

Compliant
with IEEE 802.3ah

Transmitter Reflectance

 

 

 

-10

dB

 

Optical
Receiver Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Wavelength Range

λC

1260

1310

1360

nm

 

Receiver
Sensitivity

SEN

-29

 

-32

dBm

Note1

Optical
Power Input Overload

SAT

-6

 

 

dBm

Note1

LOS
Assert Level

LOSA

-45

 

 

dBm

 

LOS
Deassert Level

LOSD

 

 

-31

dBm

 

LOS
Hysteresis

HYS

0.5

 

6

dB

 

Receiver
Reflectance

 

 

 

-12

dB

 

Note 1: PRBS 27-1@1.25Gbps, transmitter is operating, BER
≤1×10-10


Figure 1 RSSI TIMING SEQUENCE  

RSSI Characteristics

Parameter

Symbol

Min.

Typ.

Max.

Unit

Notes

RSSI
Trigger-Low

 

0

 

0.8

V

 

RSSI
Trigger-High

 

2.0

 

Vcc

V

 

RSSI
Trigger Delay

TD

0

 

3000

ns

 

Optical
Signal During Time

TONT

300

 

 

ns

 

RSSI
Trigger width

TW

300

 

TONT
TD

ns

 

I2C Access Prohibited Time

Tp

 

 

500

μs

 

Digital Diagnostic Monitoring Information

Parameter

Accuracy

Calibration

Note

Temperature

±3°C

External

 

Voltage

±3%

External

 

Bias Current

±10%

External

 

TX Power

±3dB

External

 

RX Power

±3dB

External

 

Note: The digital
diagnostic monitoring interface defines 256-byte memory map in EEPROM, which
makes use of the 8 bit address 1010001X (A2h). Please refer to the SFF-8472 Rev
10.2 for the detail information.

Pin
definition

Pin

Name

Level/Logic

Function

Description

1

NC

NA

NA

Not

2

TX_Fault

LVTTL

TX

Fault

3

TX_Dis

LVTTL

Transmitter

Enable/Disable

4

MOD-DEF2

LVTTL

SDA

I2C

5

MOD-DEF1

LVTTL

SCL

I2C

6

MOD-DEF0

MOD-DEF0

Module

Definition

7

Reset

LVTTL

Receiver

Reset

8

SD

LVTTL

Signal

Detect

9

RSSI

Trigger

RSSI
Trigger for Transceiver A/D

Conversion

High: enable RSSI A/D conversion

10

GNDR

NA

Ground

Receiver

11

GNDR

NA

Ground

Receiver

12

RD-

LVPECL

RX

Data-

13

RD+

LVPECL

RX

Data+

14

GNDR

NA

Ground

Receiver

15

V

cc

R

NA

16

V

cc

T

NA

17

GNDT

GNDT

Ground

Transmitter

18

TD+

LVPECL

TX

Data+

19

TD-

LVPECL

TX

Data-

20

GNDT

NA

Ground

Transmitter

Typical application
Circuit


Figure
2 Typical Interface Circuit

EEPROM Memory Map


Figure
5 EEPROM Memory Map Specific Data Field Descriptions

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