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100M SFP BX 4931 20 km

Ascent’s SFPP-AF-LP-XXXX-20-AN transceivers are designed expressly for high-speed communication applications that require rates up to 155 Mb/s. They are designed to be compliant with the SFF-8472 SFP MSA. The module is suitable for data links up to 20 km in distance over a 9/125 µm single mode fiber.

•    Up to 155 Mbps Data Links

•    Up to 20 km transmission on SMF

•    1310 nm FP laser and PIN receiver for SFP-AF-LP-5531-20-AN

•    1550 nm FP laser and PIN receiver for SFP-AF-LP-3155-20-AN

•    Compliant with SFP+ MSA with LC connector

•    Compliant with SFF 8472

•    +3.3 V single power supply


Absolute Maximum Ratings

Parameter

Symbol

Min

Max

Unit

Supply Voltage

Vcc

‑0.5

4.5

V

Storage Temperature

Ts

‑40

+85

°C

Operating Humidity

5

85

%

Recommended Operating Conditions

Parameter

Symbol

Min

Typical

Max

Unit

Operating Case Temperature

Standard

Tc

0


+70

°C

Industrial

‑40


+85

°C

Power Supply Voltage

Vcc

3.13

3.3

3.47

V

Power Supply Current

Icc



300

mA

Data Rate



155


Mbps

Optical and Electrical Characteristics (SFP‑AF‑LP‑5531‑20‑AN)

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter

Centre Wavelength

λc

1500

1550

1600

nm


Spectral Width (‑20dB)

∆λ



4

nm


Average Output Power

Pout

‑14


‑8

dBm

1

Extinction Ratio

ER

9



dB


Data Input Swing Differential

VIN

400


1800

mV

2

Input Differential Impedance

ZIN

90

100

110

Ω


 

TX Disable

Disable


2.0


Vcc

V


Enable


0


0.8

V


 

TX Fault

Fault


2.0


Vcc

V


Normal


0


0.8

V


Receiver

Centre Wavelength

λc

1260


1360

nm


Receiver Sensitivity




‑32

dBm

3

Receiver Overload


‑3



dBm

3

LOS De‑Assert

LOSD



‑32

dBm


LOS Assert

LOSA

‑45



dBm


LOS Hysteresis


1


4

dB


Data Output Swing Differential

Vout

400


1800

mV

4

 

LOS

High

2.0


Vcc

V


Low



0.8

V


Notes: 

1. The optical power is launched into SMF.

2. PECL input, internally AC‑coupled and terminated.

3. Measured with a PRBS 223‑1 test pattern @155Mbps, BER ≤1×10‑10.

4. Internally AC‑coupled.

Optical and Electrical Characteristics (SFP‑AF‑LP‑3155‑20‑AN)

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter

Centre Wavelength

λc

1260

1310

1360

nm


Spectral Width (RMS)

∆λ



4

nm


Average Output Power

Pout

‑15


‑7

dBm

1

Extinction Ratio

ER

9



dB


Data Input Swing Differential

VIN

400


1800

mV

2

Input Differential Impedance

ZIN

90

100

110

Ω


 

TX Disable

Disable


2.0


Vcc

V


Enable


0


0.8

V


 

TX Fault

Fault


2.0


Vcc

V


Normal


0


0.8

V


Receiver

Centre Wavelength

λc

1480


1580

nm


Receiver Sensitivity




‑28

dBm

3

Receiver Overload


‑3



dBm

3

LOS De‑Assert

LOSD



‑29

dBm


LOS Assert

LOSA

‑45



dBm


LOS Hysteresis


0.5

2

6

dB


Data Output Swing Differential

Vout

400


1800

mV

4

LOS

High

2.0


Vcc

V


Low



0.8

V


Notes: 

1. The optical power is launched into SMF.

2. PECL input, internally AC‑coupled and terminated.

3. Measured with a PRBS 223‑1 test pattern @155Mbps, BER ≤1×10‑10.

4. Internally AC‑coupled.

Timing and Electrical

Parameter

Symbol

Min

Typical

Max

Unit

Tx Disable Negate Time

t_on



1

ms

Tx Disable Assert Time

t_off



10

µs

Time To Initialize, including Reset of Tx Fault

t_init



300

ms

Tx Fault Assert Time

t_fault



100

µs

Tx Disable To Reset

t_reset

10



µs

LOS Assert Time

t_loss_on



100

µs

LOS De‑assert Time

t_loss_off



100

µs

Serial ID Clock Rate

f_serial_clock



400

KHz

MOD_DEF (0: 2)‑High

VH

2


Vcc

V

MOD_DEF (0: 2)‑Low

VL



0.8

V

Diagnostics

Parameter

Range

Unit

Accuracy

Calibration

Temperature

0 to +70 (standard)

°C

±3°C

Internal / External

‑40 to +85 (industrial)

Voltage

3.0 to 3.6

V

±3%

Internal / External

Bias Current

0 to 100

mA

±10%

Internal / External

TX Power

‑14 to ‑8

dBm

±3dB

Internal / External

RX Power

‑30 to ‑8

dBm

±3dB

Internal / External

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