1.25Gbps 1550nm 60Km LC DDM

SFP Transceiver

1.25Gbps 1550nm 60Km LC DDM

The SFP transceivers are high-performance, cost-effective modules supporting data rate of 1.25Gbps and 60km transmission distance with SMF.

The transceiver consists of three sections: a SFP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.

The transceivers are compatible with SFP Multi-Source Agreement and SFF-8472 digital diagnostics functions.

Product Detail

FAQ

Product Tags

Product Features

1. SFP package with LC connector.

2. 1550nm DFB laser and PIN photo detector.

3. Up to 60Km transmission on SMF.

4. +3.3V single power supply.

5. LVPECL compatible data input/output interface.

6. Low EMI and excellent ESD protection.

7. laser safety standard IEC-60825 compliant.

8. Compatible with RoHS.

9. Digital Diagnostic SFF-8472 compliant.

10. Signal Ground Isolated to Case.

Application

1. 1.25Gb/s 1000Base-LX Ethernet.

2. Dual Rate 1.06 / 2.125 Gb/s Fiber Channel.

Absolute Maximum Ratings:

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

Operation Environment:

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

Optical Characteristics

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

Parameter	Symbol	Min.	Typ.	Max.	Units
Transmitter Section
Center Wavelength	λo	1540	1550	1560	nm
Spectral Width (RMS)	△λ	-	-	1	nm
Average Output Power	Po	-5	-	0	dBm
Extinction Ratio	Er	8	-		dB
Rise/Fall Time (20%~80%)	Tr/Tf			180	ps
Total jitter	Tj			0.43	UI
Optical Eye Diagram	IEEE 802.3z and ANSI Fiber Channel Compatible
Receiver Section
Center Wavelength	λo	1260		1620	nm
Receiver Sensitivity	Rsen			-24	dBm
Receiver Overload	Rov	-3			dBm
Return Loss		12			dB
LOS Assert	LOSA	-36			dBm
LOS Dessert	LOSD			-25	dBm
LOS Hysteresis		0.5		5

Electrical Characteristics

(Ambient Operating Temperature 0℃ to +70℃, 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	Deassert		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	Deassert		0		0.8	V

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	3C	60km
15	1	Length (9um)	64/C8/FF
16	1	Length (50um)	00
17	1	Length (62.5um)	00
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	WINTOP
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	06 0E	1550nm
62	1	Reserved	00
63	1	CC BASE	XX	Check sum 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	Check sum of byte 64~94
96-255	160	Vendor specific

Diagnostics

Parameter	Range	Accuracy	Unit	Calibration
Temperature	0～70	±3	℃	Internal
Voltage	3.15～3.45	0.1	V	Internal
Bias Current	10～80	±2	mA	Internal
Tx Power	-6～1	±2	dBm	Internal
Rx Power	-26~-3	±3	dBm	Internal

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	S
13	RD+	IReceived Data Output	S
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 optical output. It is pulled up with in 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~10kΩresistor 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 two wire serial interface for serial ID.

MOD-DEF 2 is the data line of 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.

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