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25G SFP28 BIDI 10km

25G SFP28 BIDI 10km

T&S 25G BIDI SFP28 transceivers are designed for bi-directional 25G serial optical data communications by using 1270nm/1330nm or 1270nm/1310nm wavelengths. The modules are suitable for 25G Ethernet and CPRI (option 10) applications, like in 5G mobile networks. The family offers modules for the I-temp range from -40⁰C to +85⁰C and C-temp range from 0⁰C to +70⁰C.

Features of 25G SFP28 BIDI 10km

  • Compliant with MSA SFP+ Specification SFF-8402

  • Compliant with SFP+ MSA with LC connector

  • 2-wire interface with integrated Digital Diagnostic monitoring

  • Data Rate up to 25.78 Gb/s

  • 1270nm DFB laser and PIN receiver for TSSPB-2325G-LR

  • 330nm DFB laser and PIN receiver for TSSPB-3225G-LR

  • Metal enclosure, for lower EMI

  • Distance up to 10km transmission on SMF

  • Single 3.3V Power Supply and Power Dissipation < 1.2W

  • Case operation temperature range:Standard temperature: 0°C to 70°C

  • Extended temperature: -40°C to 85°C

  • RoHS6 compliant (lead free)




Applications of 25G SFP28 BIDI 10km

  • 25G Ethernet

  • CPRI 10

Specifications of 25G SFP28 BIDI 10km

Absolute Maximum Ratings
Recommended Operating Conditions
Electrical characteristics
Optical characteristics (TSSPB-2325G-LR, 1270 DFB & PIN/TIA)
Optical characteristics (TSSPB-3225G-LR, 1330 DFB & PIN/TIA)

Parameters

Symbol

Min.

Max.

Unit

Power Supply Voltage

VCC

-0.5

+3.6

V

Storage Temperature

Tc

-40

+85

°C

Relative Humidity

RH

0

85

%


Parameter

Symbol

Min

Typical

Max

Unit

Power Supply Voltage

VCC

3.15

3.30

3.45

V

Operating Case Temperature(standard)

Tca

0

-

70

°C

Operating Case Temperature(industrial)

Tca

-40

-

85

°C


Parameter

Symbol

Min.

Typical

Max

Unit

Ref.

Supply Current

Icc

-

-

348

mA

-

Power Consumption

-

-

-

1200

mW

-

Transmitter

Input differential impedance

Rin

-

100

-

Ω

1

Differential Input Voltage swing

Vin

300

-

1100

mV

-

Transmit Disable Voltage

VD

VCC -1.3

-

VCC

V

-

Transmit Enable Voltage

Ven

Vee

-

Vee+0.8

V

2

Receiver

Output differential impedance

Rout

-

100

-

Ω

-

Differential Output Swing

Vout

500

-

800

mV

3

Loss of Signal –Asserted

-

2.0

-

VCC+0.3

V

4

Loss of Signal –Negated

-

Vee


Vee+0.8

V

4

Notes:

1. Connected directly to TX data input pins. AC coupled thereafter.

2. Or open circuit.

3. Into 100 ohms differential termination.

4. Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.


Parameter

Symbol

Min.

Typical

Max

Unit

Transmitter

Optical Wavelength

λ

1260

1270

1280

nm

Side Mode Suppress Ratio

SMSR

30

-

-

dB

Spectral Width(-20dB)

Δλ

-

-

1

nm

Average Output Power

Po

-5

-

2

dBm

Extinction Ratio

ER

3.5

-

-

dB

Receiver

Receiver Sensitivity (OMA)

SEN

-

-

-18

dBm

Receiver Overload

Pmax

2

-

-

dBm

Centre Wavelength

λ

1320

-

1340

nm

LOS De-Assert

Lda

-

-

-19

dBm

LOS Assert

Lsa

-30

-

-

dBm

LOS Hysteresis

Lh

0.5

-

-

dB



Parameter

Symbol

Min.

Typical

Max

Unit

Ref.

Transmitter

Optical Wavelength

λ

1320

1330

1340

nm

-

Side Mode Suppress Ratio

SMSR

30

-

-

dB

-

Spectral Width(-20dB)

Δλ

-

-

1

nm

-

Average Output Power

Po

-5

-

2

dBm

1,2

Extinction Ratio

ER

3.5

-

-

dB


Receiver

Receiver Sensitivity (OMA)

SEN

-

-

-18

dBm

2

Receiver Overload

Pmax

2

-

-

dBm

-

Centre Wavelength

λ

1260

-

1270

nm

-

LOS De-Assert

Lda

-

-

-19

dBm

-

LOS Assert

Lsa

-30

-

-

dBm

-

LOS Hysteresis

Lh

0.5

-

-

dB

-

Notes:

1. Output power is coupled into a 9/125μm SMF.

2. ITU-T G.694.2 CWDM wavelength from 1271nm to 1611nm, each step 20nm.

3. BER less than 1E-12 and PRBS 231 -1 test pattern.

Electrical Pad Layout of 25G SFP28 BIDI 10km

Electrical Pad Layout of 25G SFP28 BIDI 10km


Pin definition of 25G SFP28 BIDI 10km

Pin

Symbol

Name/Description

1

VEET [1]

Transmitter Ground

2

Tx_FAULT [2]

Transmitter Fault

3

Tx_DIS   [3]

Transmitter Disable. Laser output disabled on high or open

4

SDA [2]

2-wire Serial Interface Data Line

5

SCL [2]

2-wire Serial Interface Clock Line

6

MOD_ABS [4]

Module Absent. Grounded within the module

7

RS0 [5]

No connection required

8

RX_LOS [2]

Loss of Signal indication. Logic 0 indicates normal operation

9

RS1 [5]

No connection required

10

VEER [1]

Receiver Ground

11

VEER [1]

Receiver Ground

12

RD-

Receiver Inverted DATA out. AC Coupled

13

RD+

Receiver DATA out. AC Coupled

14

VEER [1]

Receiver Ground

15

VCCR

Receiver Power Supply

16

VCCT

Transmitter Power Supply

17

VEET [1]

Transmitter Ground

18

TD+

Transmitter DATA in. AC Coupled

19

TD-

Transmitter Inverted DATA in. AC Coupled

20

VEET [1]

Transmitter Ground

Notes:

[1] Module circuit ground is isolated from module chassis ground within the module.

[2] Should be pulled up with 4.7k – 10k ohms on host board to a voltage between 3.15Vand 3.6V.

[3] Tx_Disable is an input contact with a 4.7 kΩ to 10 kΩ pullup to VCCT inside the module.

[4] Mod_ABS is connected to VeeT or VeeR in the SFP+ module. The host may pull this contact up to VCC_Host with a resistor in the range 4.7 kΩ to10 kΩ.Mod_ABS is asserted “High” when the SFP+ module is physically absent from a host slot.

[5] RS0 and RS1 are module inputs and are pulled low to VeeT with > 30 kΩ resistors in the module.



Ordering information of 25G SFP28 BIDI 10km

Part Number

Product Description

TSSPB-2325G-LRC

25Gbps, SFP+ BIDI TX1270nm/RX1330nm 10km,    0°C ~ +70°C

TSSPB-3225G-LRC

25Gbps, SFP+ BIDI TX1330nm/RX1270nm, 10km,    0°C ~ +70°C

TSSPB-2325G-LRT

25Gbps, SFP+ BIDI TX1270nm/RX1330nm 10km,   -40°C ~ +85°C

TSSPB-3225G-LRT

25Gbps, SFP+ BIDI TX1330nm/RX1270nm, 10km,   -40°C ~ +85°C



References of 25G SFP28 BIDI 10km

1. SFP28 MSA

2. Directive 2011/65/EU of the European Parliament and of the Council, “on the restriction of the use of certain hazardous substances in electrical and electronic equipment,” July 1, 2011.



Important Notice of of 25G SFP28 BIDI 10km

Performance figures, data and any illustrative material provided in this data sheet are typical and must be

specifically confirmed in writing by T&S before they become applicable to any particular order or

contract. In accordance with the T&S policy of continuous improvement specifications may change

without notice. The publication of information in this data sheet does not imply freedom from patent or other protective rights of T&S or others. Further details are available from any T&S sales representative.

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