ALLNET ISP Bridge Modem GPON in Mini-GBIC SFP form factor "ALL4785-GPON".

ALLNET ISP Bridge Modem GPON in Mini-GBIC SFP form factor "ALL4785-GPON".
ALLNET ISP Bridge Modem GPON in Mini-GBIC SFP form factor "ALL4785-GPON".
   
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Highlight: suitable for ITU-T G.984.2/984.5 GPON LC/APC 8° wavelength: TX 1310 nm,... more
Product information "ALLNET ISP Bridge Modem GPON in Mini-GBIC SFP form factor "ALL4785-GPON"."

Highlight:

  • suitable for ITU-T G.984.2/984.5 GPON
  • LC/APC 8°
  • wavelength: TX 1310 nm, RX 1490 nm (with filter)
  • suitable for rogue detection
  • Transmit power: 0.5 to 5 dBm
  • Receive power range: -3 to -28 dBm
  • Range: 20 km
  • Support of SFF-8472
  • Laser class 1
  • Suitable for AVM Fritz Art. 2000 2942

Technical Details:

GPON SFP ONU Optical Module

ALL4785-GPON

Product Features

  • Support ITU-T 984.2/984.5 GPON Networks application
  • Single fiber bi-directional data links with asymmetric 1.244Gbps Tx and 2.488Gbps Rx
  • 1310nm burst-mode transmitter with DFB laser
  • 1490nm continuous-mode receiver
  • 2-wire interface for integrated digital diagnostic Monitoring
  • Transmitter Burst On
  • Receiver state indication (oional RX_SD or Rx_LOS)
  • SFP package with LC/APC
  • Single +3.3V power supply
  • Operation case temperature -40~85°C for industrial and -10~70°C for commercial
  • SFF-8472-Compliance
  • RoHS6 compliance

Operating Condition

Parameter

Unit

Min.

Typical

Max.

Storage Temperature

°C

-40

 

85

Operating Case Temp for C-temp

°C

0

 

70

Operating Case Temp for I-temp

°C

-40

 

85

Power Supply Voltage

V

3.15

3.3

3.45

Supply Current

mA

 

200

400

Bit Rate for Tx

Gbps

1.244

Bit Rate for Rx

Gbps

2.488

Characteristics

All performance is specified at whole working temperature and conditions

Parameter

Unit

Min.

Typical

Max.

Transmitter

TX Central Wavelength

nm

1290

1310

1330

Spectral Width (-20dB)

nm

   

1

Side Mode Suppression Ratio

(SMSR)

dB

30

   

Mean Launched Power

dBm

0.5

2.5

5

Mean Launched Power (TX Off)

dBm

   

-40

Extinction Ratio

dB

10

   

Oical Return Loss Tolerance

dB

-15

   

Transmitter and dispersion Penalty

dB

   

1

Transmitter Mask

(PRBS223-1@1.244G)

Compliant With ITU-T G984.2

Receiver

Receive Wavelength

nm

1480

1490

1500

Sensitivity

(PRBS223-1@2.488G, ER=8.2, BER<10-10)

dBm

   

-28

Overload

(PRBS223-1@2.488G, ER=8.2, BER<10-10)

dBm

-3

   

Loss of signal De-assert Level

dBm

   

-35

Loss of signal assert Level

dBm

-39

   

LOS Hysteresis

dB

0.5

 

6

WDM Filter isolation to 1441 nm

~1450 nm,1530 nm ~1539 nm

dB

25

   

WDM Filter isolation to 1250 nm

~1441 nm,1539 nm~ 1625 nm

dB

36

   

Electrical Interface Characteristics

Data Input Swing Differential/TX

mV

200

-

2000

Data Output Swing Differential/RX

mV

400

 

1600

Date Differential Impedance

Ω

90

100

110

LVTTL Output High

V

2.4

 

Vcc

LVTTL Output Low

V

0

 

0.4

LVTTL Input High

V

2.0

 

Vcc+0.3

LVTTL Input Low

V

0

 

0.8

Timing Characteristics

Turn On Time at Burst mode (TON)

ns

   

12.8

Turn Off Time at Burst mode (TOFF)

ns

   

12.8

TX-SD De-assert Time (TTXSD_OFF)

ns

   

100

LOS Assert Time (TLOSA)

us

   

100

LOS De-assert Time (TLOSD)

us

   

100

PIN Definition

Pin

No.

Symbol

Level /

Logic

Descriion

1

VeeT

 

Module Transmitter Ground

2

Tx_Fault

LVTTL-O

Module Transmitter Fault

3

Tx_Burst

LVTTL-I

TX_Disable - low --> transmitter on

4

SDA

LVTTL-I

2-Wire Serial Interface Data Line

5

SCL

LVTTL-I/

O

2-Wire Serial Interface Clock

6

MOD_ABS

LVTTL-O

Module Absent, connected to ground in the module

7

TX_SD

LVTTL-O

Tx Signal Detect, active high when transmitter on

8

Rx_LOS or

RX_SD

LVTTL-O

LoS - low --> normal operation, high --> loss of signal"

9

NC

   

10

VeeR

 

Module Receiver Ground

11

VeeR

 

Module Receiver Ground

12

RD-

CML-O

Receiver Inverted Data Output, AC-coupled

13

RD+

CML-O

Receiver Non-Inverted Data Output, AC-coupled

14

VeeR

 

Module Receiver Ground

15

VccR

 

Module Receiver 3.3V Supply

16

VccT

 

Module Transmitter 3.3V Supply

17

VeeT

 

Module Transmitter Ground

18

TD+

LVPECL-

I

Transmitter Non-Inverted Data Input, DC-coupled

19

TD-

LVPECL-

I

Transmitter Inverted Data Input, DC-coupled

20

VeeT

 

Module Transmitter Ground

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