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JHA-SFP28-25G-AOC spec
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JHA-SFP28-25G-AOC spec

l Electrical interface compliant to SFF-8431 l 850nm VCSEL laser and PIN photo-detector l Maximum link length of 70m on OM3 MMF and 100m on OM4 MMF l Digital diagnostics functions are available via the I2C interface l l Operating case temperature Commercial: 0°C to +70 °C l+3.3V single power supply l Power consumption less than 1W l RoHS compliant l Password protection for A0h and A2h
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Electrical interface compliant to SFF-8431

850nm VCSEL laser and PIN photo-detector

Maximum link length of                                             

       70m on OM3 MMF and 100m on OM4 MMF

Digital diagnostics functions are available via the I2C interface  l

Operating case temperature Commercial: 0°C to +70 °C

l+3.3V single power supply

Power consumption less than 1W

RoHS compliant

Password protection for A0h and A2h

Applications

25GBASE-SR Ethernet

Servers, switches, storage and host card adapters

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Features

Electrical interface compliant to SFF-8431

850nm VCSEL laser and PIN photo-detector

Maximum link length of                                             

       70m on OM3 MMF and 100m on OM4 MMF

Digital diagnostics functions are available via the I2C interface  l

Operating case temperature Commercial: 0°C to +70 °C

l+3.3V single power supply

Power consumption less than 1W

RoHS compliant

Password protection for A0h and A2h

Applications

25GBASE-SR Ethernet

Servers, switches, storage and host card adapters

Absolute Maximum Ratings

 

Table1- Absolute Maximum Ratings

 

Parameter

Symbol

Min.

Typical

Max.

Unit

Notes

Supply Voltage

Vcc3

-0.5

-

+3.6

V

 

Storage Temperature

Ts

-10

-

+70

°C

 

Operating Humidity

RH

+5

-

+85

%

1

Note: 1 No condensation

 

Recommended Operating Conditions

 

Table 2- Recommended operating Conditions

 

Parameter

Symbol

Min.

Typical

Max.

Unit

Notes

Operating Case Temperature

TC

0

-

+70

°C

 

Power Supply Voltage

Vcc

3.14

3.3

3.47

V

 

Power Supply Current

Icc

-

-

300

mA

 

Power Dissipation

Pd

-

-

1.0

W

 

Bit Rate

BR

8.5

25.78125

-

Gbps

 

Fiber Bend Radius

Rb

3

-

-

cm

 

Electrical Characteristics

 

Table 3- Electrical Characteristics

 

Parameter

Symbol

Min.

Typ.

Max.

Units

Notes

Transmitter

Differential Data Input Swing

Vin,P-P

200

-

1600

mVPP

 

Input Differential Impedance

ZIN

90

100

110

Ω

 

 

Tx_Fault

Normal Operation

VOL

0

-

0.8

V

 

Transmitter Fault

VOH

2.0

-

VCC

V

 

 

Tx_Disable

Normal Operation

VIL

0

-

0.8

V

 

Laser Disable

VIH

2.0

-

VCC+0.3

V

 

Receiver

Differential Date Output

Vout

400

-

800

mV

 

Output Differential Impedance

ZD

90

100

110

Ω

 

 

Rx_LOS

Normal Operation

VOL

0

-

0.8

V

 

Lose Signal

VoH

2.0

-

VCC

V

 

Optical Characteristics

 

Table 4-Optical Characteristics

 

Parameter

Symbol

Unit

Min

Typ

Max

Notes

Optical transmitter Characteristics

Bit Rate

BR

Gbps

8.5

25.78125

-

 

Center Wavelength Range

λc

nm

820

850

880

 

Average Launch power

Tx_off

Poff

dBm

-

-

-45

 

Launch Optical Power

P0

dBm

-6.0

 

2.4

1

Extinction Ratio

ER

dB

2

-

-

 

Spectral Width(RMS)

RMS

nm

-

-

0.65

 

Optical Receiver Characteristics

Bit Rate

BR

Gbps

8.5

25.78125

 

 

Bit Error Rate

BER

 

-

-

E-12

 

Damage threshold

DT

dBm

3.4

-

-

 

Overload Input Optical

Power

PIN

dBm

2.4

-

-

2

Center Wavelength Range

λc

nm

820

-

880

 

Receiver Sensitivity in

Average Power

Sen

dBm

-

-

-5.2

3

Los Assert

LosA

dBm

-30

-

-

 

Los De-Assert

LosD

dBm

-

-

-13

 

Los Hysteresis

LosH

dB

0.5

 

 

 

Note:

1. Coupled into 50/125 MMF.

2. 
Measured with PRBS 231-1 test pattern @25.78125Gbps.BER=E-12 3. BER=1x10-12; PRBS231-1@25.78125Gbps.

 

Recommended Host Board Power Supply 

                                              Figure 1, Recommended Host Board Power Supply Circuit

Recommended Interface Circuit

                  Figure 2, Recommended Interface Circuit

Pin arrangement

 

Figure 3, Pin View

 

Table 5-Pin Function Definitions

 

Pin

Symbol

Name/Description

Notes

1

VEET

Module Transmitter Ground

1

2

TX_FAULT

Module Transmitter Fault

2

3

TX_DISABLE

Transmitter Disable; Turns off transmitter laser output

3

4

SDA

2-Wire Serial Interface Data Line (MOD-DEF2)

 

5

SCL

2-Wire Serial Interface Clock (MOD-DEF1)

 

6

MOD_ABS

Module Absent, connected to VEET or VEER in the module

2

7

RS0

Rate Select 0, optionally controls SFP+ module receiver

4

8

RX_LOS

Receiver Loss of Signal Indication (In FC designated as Rx_LOS and in Ethernet designated as NOT Signal Detect)

2

9

RS1

Rate Select 1, optionally controls SFP+ module transmitter

4

10

VEER

Module Receiver Ground

1

11

VEER

Module Receiver Ground

1

12

RD-

Receiver Inverted Data Output

 

13

RD+

Receiver Non-Inverted Data Output

 

14

VEER

Module Receiver Ground

1

15

VCCR

Module Receiver 3.3 V Supply

 

16

VCCT

Module Transmitter 3.3 V Supply

 

17

VEET

Module Transmitter Ground

1

18

TD+

Transmitter Non-Inverted Data Input

 

19

TD-

Transmitter Inverted Data Input

 

20

VEET

Module Transmitter Ground

1

Note:

1.The module ground pins are isolated from the module case.

2.The pins shall be pulled up with 4.7K-10Kohms to a voltage between 3.14V and 3.46V on host board.

3.The pin is pulled up to VCCT with a 4.7K-10KΩ resistor in the module.


4.See SFF-8472 Rev12.2 Table 10-2.

 

Monitoring Specification

Figure 4, Memory Map

 

Mechanical Design Diagram

 

Table 5- Cable Length

 

Cable Length  LUnit: m

TolerantUnit: cm

1.0

+5/-0

1.0<L4.5

+15/-0

4.5<L14.5

+30/-0

14.5

+2%/-0

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