1.25Gbps 40km SFP Optical Transceiver,DDM - Fiber Optic Cabling Management

1.25Gbps 120km SFP Optical Transceiver

2020-12-31

10/100/1000Base-Tx to 1000Base-Fx Media Converter

2020-12-31

1. Feature:

SFP package with LC connector
1310nm FP laser and PIN photodetector
Up to 40Km transmission on SMF
+3.3V single power supply
LVPECL compatible data input/output interface
Low EMI and excellent ESD protection
laser safety standard IEC-60825 compliant
Compatible with RoHS
Digital Diagnostic SFF-8472 compliant

2. Application：

Ethernet
Telecom
Fiber Channel

3. Absolute Maximum Ratings：

Parameter	Symbol	Minimum	Maximum	Units
Storage Temperature	Tst	-40	+85	C
Supply Voltage	Vcc	0	+3.6	V
Operating Relative Humidity	RH	5	95	%

4. Operation Environment：

Parameter		Symbol	Min	Typical	Max	Units
Supply Voltage		Vcc	3.15	3.3	3.45	V
Operating Case Temperature	Commercial	Tc	0		+70	C
Operating Case Temperature	Industrial	Tc	-40		+85	C
Power Dissipation					1	W
Data Rate				1.25		Gbps

5. Optical Characteristics：

(Ambient Operating Temperature 0C to +70C, Vcc =3.3 V)

Parameter	Symbol	Min.	Typ.	Max.	Units
Transmitter Section
Center Wavelength	o	1260	1310	1360	nm
Spectral Width(RMS)		–	–	4	nm
Average Output Power	Po	-5	–	0	dBm
Extinction Ratio	Er	10	–	15	dB
Rise/Fall Time(20%~80%)	Tr/Tf			0.26	ns
Total jitter	Tj			0.43	UI
Optical Eye Diagram	IEEE 802.3z and ANSI Fibre Channel Compatible
Receiver Section
Center Wavelength	o	1260		1620	nm
Receiver Sensitivity	Rsen			-24	dBm
Receiver Overload	Rov	0			dBm
Return Loss		12			dB
LOS Assert	LOS_A	-36			dBm
LOS Dessert	LOS_D			-24	dBm
LOS Hysteresis		0.5		5

6. Electrical Characteristics：

(Ambient Operating Temperature 0C to +70C, Vcc =3.3 V)

Parameter		Symbol	Min.	Typ.	Max.	unit
Transmitter Section
Input Differential Impendence		Zin	90	100	110	Ohm
Data Input Swing Differential		Vin	500		2400	mV
TX Disable	Disable		2.0		Vcc	V
TX Disable	Enable		0		0.8	V
TX Fault	Assert		2.0		Vcc	V
TX Fault	Dessert		0		0.8	V
Receiver Section
Output differential impendence		Zout		100		Ohm
Data Input Swing Differential		Vout	370		2000	mV
Rx_LOS	Assert		2.0		Vcc	V
Rx_LOS	Dessert		0		0.8	V

7. EEPROM INFORMATION（A0）:

Addr	Field Size (Bytes)	Name of Field	HEX	Description
0	1	Identifier	03	SFP
1	1	Ext. Identifier	04	MOD4
2	1	Connector	07	LC
3-10	8	Transceiver	00 00 00 02 12 00 0D 01	Transmitter Code
11	1	Encoding	01	8B10B
12	1	BR, nominal	0D	1250M bps
13	1	Reserved	00
14	1	Length (9um)-km	28	40km
15	1	Length (9um)	64/C8/FF
16	1	Length (50um)	37	550m
17	1	Length (62.5um)	37	550m
18	1	Length (copper)	00
19	1	Reserved	00
20-35	16	Vendor name	57 49 4E 54 4F 50 20 20 20 20 20 20 20 20 20 20
36	1	Reserved	00
37-39	3	Vendor OUI	00 00 00
40-55	16	Vendor PN	xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx	ASC II
56-59	4	Vendor rev	31 2E 30 20	V1.0
60-61	2	Wavelength	05 1E	1310nm
62	1	Reserved	00
63	1	CC BASE	XX	Checksum of byte 0~62
64-65	2	Options	00 1A	LOS, TX_DISABLE, TX_FAULT
66	1	BR, max	32	50%
67	1	BR, min	32	50%
68-83	16	Vendor SN	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00	Unspecified
84-91	8	Vendor date code	XX XX XX 20	Year, Month, Day
92-94	3	Reserved	00
95	1	CC_EXT	XX	Checksum of byte 64~94
96-255	160	Vendor-specific

8. Diagnostics:

Parameter		Range	Accuracy	Unit	Calibration
Temperature	C	-5 ~ 70	±3	ºC	Internal
Temperature	I	-40 ~ 80	±3	ºC	Internal
Voltage		0 ~ VCC	0.1	V	Internal
Bias Current		0 ~ 120	±2	mA	Internal
Tx Power		-5 ~ 0	±1	dBm	Internal
Rx Power		<0	±1	dBm	Internal

9. Pin Description:

Pins	Name	Description	NOTE
1	VeeT	Transmitter Ground
2	Tx Fault	Transmitter Fault Indication	1
3	Tx Disable	Transmitter Disable	2
4	MOD DEF2	Module Definition 2	3
5	MOD DEF1	Module Definition 1	3
6	MOD DEF0	Module Definition 0	3
7	Rate Select	Not Connected
8	LOS	Loss of Signal	4
9	VeeR	Receiver Ground
10	VeeR	Receiver Ground
11	VeeR	Receiver Ground
12	RD-	Inv. Received Data Output	5
13	RD+	IReceived Data Output	5
14	VeeR	Receiver Ground
15	VccR	Receiver Power
16	VccT	Transmitter Power
17	VeeT	Transmitter Ground
18	TD+	Transmit Data Input	6
19	TD-	Inv. Transmit Data Input	6
20	VeeT	Transmitter Ground

Notes:

1. TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 0.8V.

2. TX Disable is an input that is used to shut down the transmitter’s optical output. It is pulled up within the module with a 4.7k~10kΩ resistor. Its states are:

Low (0~0.8V): Transmitter on

(>0.8V, <2.0V): Undefined

High (2.0~3.3V): Transmitter Disabled

Open: Transmitter Disabled

3. MOD-DEF 0,1,2 are the module definition pins. They should be pulled up with a 4.7k~10kΩ resistor on

the host board. The pull-up voltage shall be VccT or VccR.

MOD-DEF 0 is grounded by the module to indicate that the module is present

MOD-DEF 1 is the clock line of the two-wire serial interface for serial ID

MOD-DEF 2 is the data line of the two-wire serial interface for serial ID

4. LOS is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates loss of signal. In the low state, the output will be pulled to less than 0.8V.

5. These are the differential receiver output. They are internally AC-coupled 100Ω differential lines which should be terminated with 100Ω (differential) at the user SERDES.

6. These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω differential termination inside the module.

10. Recommended Application Circuit：

11. Outline drawing (mm):

12. Ordering information :

LW-S12-40LD	Commercial	0~70C
LW-S12-40LID	Industrial	-40~85C