FSJMLB31-K10C(I)_25G SFP28_SFP Optical Transceivers_Products

FSJMLB31-K10C(I)

SFP28 25Gb/s LR 10km DDM

Product Features:
l Supports 25.78Gb/s aggregate bit rate;
l 1310nm DFB Laser transmitter and PIN/TIA receiver;
l Maximum link length of 10km on;
Single Mode Fiber (SMF);
l Hot-pluggable SFP28 footprint;
l Duplex LC receptacles;
l Single 3.3V power supply;
l Maximum power dissipation < 1.2W;
l RoHS-6 compliant and lead-free;
l I2C manegement interface;
l Case operating temperature:
Commercial: 0°C to +70°C; Industrial: -40°C to +85°C

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Product Overview Product Features Specifications

Overview

I. Pin Diagram

Pinout of Connector Block on Host Board

II. Pin Descriptions

Pin	Symbol	Name/Description	Ref.
1	V EET	Transmitter Ground (Common with Receiver Ground)	1
2	T FAULT	Transmitter Fault.	2
3	T DIS	Transmitter Disable. Laser output disabled on high or open.	3
4	SDA	2-wire Serial Interface Data Line	4
5	SCL	2-wire Serial Interface Clock Line	4
6	MOD_ABS	Module Absent. Grounded within the module	4
7	RS0	No connection required
8	LOS	Loss of Signal indication. Logic “0” indicates normal operation.	5
9	RS1	No connection required
10	V EER	Receiver Ground (Common with Transmitter Ground)	1
11	V EER	Receiver Ground (Common with Transmitter Ground)	1
12	RD-	Receiver Inverted DATA out. AC Coupled
13	RD+	Receiver Non-inverted DATA out. AC Coupled
14	V EER	Receiver Ground (Common with Transmitter Ground)	1
15	V CCR	Receiver Power Supply
16	V CCT	Transmitter Power Supply
17	V EET	Transmitter Ground (Common with Receiver Ground)	1
18	TD+	Transmitter Non-Inverted DATA in. AC Coupled.
19	TD-	Transmitter Inverted DATA in. AC Coupled.
20	V EET	Transmitter Ground (Common with Receiver Ground)	1

Notes:

1. Circuit ground is internally isolated from chassis ground.

2. TFAULT is an open collector/drain output, which is pulled up with a 4.7kΩ – 10kΩ resistor on the

host board, but is grounded inside the SFP+ cable plug.

3. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.

4. Should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 2.0V and 3.6V.

MOD_ABS pulls line low to indicate module is plugged in.

5. LOS is open collector output. Should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage

between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

III. Absolute Maximum Ratings

Parameter	Symbol	Min	Type	Max	Unit	Ref.
Maximum Supply Voltage	Vcc	-0.5		3.6	V
Storage Temperature	TS	-40		85	℃
Relative Humidity	RH	0		85	%

Notes:

1.Limited by the fiber cable jacket, not the activeends.

2.Non-condensing

IV. Optical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Ref.
Transmitter
Signaling rate(range)	Sr		25.7825±100ppm		GBd
Center Wavelength	λc	1295	1310	1325	nm
Spectral Width(-20dB)	Pm			1	nm
Average Output Power	Pavg	-7		2	dBm
Extinction Ratio	ER	3.5			dB
Side Mode Suppression Ratio	SMSR	30			dB
Transmitter OFF Output Power	POff			-30	dBm
Transmitter eye mask definition {X1, X2, X3, Y1, Y2, Y3} Hit ratio 5×10-5 hits per sample.		{0.31, 0.4, 0.45, 0.34, 0.38, 0.4}
Receiver
Signaling rate(range)	Sr		25.7825±100ppm		GBd
Center Wavelength	λc	1295	1310	1325	nm
Receiver Sensitivity(OMA)				-12	dBm	1
Receiver Reflectance	Rfl			-26	dBm
Loss of Signal Assert	P_A	-30			dBm
Loss of Signal De-assert	P_D			-13	dBm
LOS Hysteresis	P_D- P_A	0.5			dB

Note:

1. Hit ratio 5x10-5 .

V. Digital Diagnostic Memory Map

VI. Digital Diagnostic Monitoring Information

Parameter	Unit	Accuracy
Case Temperature	℃	±3
Supply Voltage	V	±3%
Tx Bias Current	mA	±10%
Tx Optical Power	dB	±3
Rx Optical Power	dB	±3

VII. Electrical Interface Characteristics

Parameter	Symbol	Min	Type	Max	Unit	Ref.
Supply Voltage	Vcc	3.135	3.3	3.465	V
Supply Current	Icc			300	mA	Commercial
Supply Current	Icc			360	mA	Industrial
Transmitter
Input differential impedance	Rin		100			1
Differential data input swing	Vin, pp	100		800	mV
Transmit Disable Voltage	V_D	2		V_CC	V
Transmit Enable Voltage	V_EN	Vee		Vee+0.8	V
Receiver
Differential data output swing	Vout, pp	100		800	mV	2
LOS Fault	V_{LOS_fault}	2		VccHOST	V	3
LOS Normal	V_{LOS_norm}	Vee		Vee+0.8	V	3

Notes:

1. Connected directly to TX data input pins.AC coupling from pins into laser driver IC.

2. Into 100Ω differential termination.

3. LOS is an open collector output. Should be pulled up with 4.7kΩ – 10kΩ on the host

board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.

VIII. Recommended Interface Circuit

IX. Mechanical Dimensions (mm)

SFP wire mechanical drawing (Unit: mm)

feature

Product Features

l Supports 25.78Gb/s aggregate bit rate

l 1310nm DFB Laser transmitter and PIN/TIA receiver

l Maximum link length of 10km on

Single Mode Fiber (SMF)

l Hot-pluggable SFP28 footprint

l Duplex LC receptacles

l Single 3.3V power supply

l Maximum power dissipation < 1.2W

l RoHS-6 compliant and lead-free

l I2C management interface

l Case operating temperature: Commercial: 0°C to +70°C; Industrial: -40°C to +85°C

Applications	Compliance
25GBASE-LR 25G Ethernet	SFP MSA.
CPRI 10	IEEE802.3cc
	SFF-8472
	RoHS

Specifications

Ordering Information

Package	Product part NO.	Distance	Temperature Range
FSJMLB31-K10C	25.78125	1310	10km
FSJMLB31-K10I	25.78125	1310	10km
*For availability of additional cable lengths, please contact Fibridge.