​光模块（千兆/双纤/多模550m，850nm/LC)

产品介绍

千兆双纤多模550m，850nm  LC接口 3.3v

1. 特征

l  SFP package with LC connector

l  850nm VCSEL Laser and PIN photodetector

l  Up to 550m transmission on 50/125 um MMF

l  +3.3V single power supply

l  LVPECL compatible data input/output interface

l  Low EMI and excellent ESD protection

l  laser safety standard IEC-60825 compliant

l  Compatible with RoHS

l  Digital Diagnostic SFF-8472 compliant

2. 应用

l  Ethernet

l  Telecom

l  Fiber Channel

3. 极限参数

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. 操作环境

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

5. 光学特性

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

Parameter	Symbol	Min.	Typ.	Max.	Units
Transmitter Section
Center Wavelength	lo	840	850	860	nm
Spectral Width(RMS)	Dl	-	-	0.85	nm
Average  Output Power	Po	-8	-	-3	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	lo	770	850	860	nm
Receiver  Sensitivity	Rsen			-19	dBm
Receiver  Overload	Rov	-3			dBm
Return Loss		12			dB
LOS Assert	LOSA	-32			dBm
LOS Dessert	LOSD			-19	dBm
LOS Hysteresis		0.5		5

6. 电学特性

(Ambient Operating Temperature0°C to +70°C, 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
	Enable		0		0.8	V
TX  Fault	Assert		2.0		Vcc	V
	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
	Deassert		0		0.8	V







7. 脚位说明

Pins	Name	Discription	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 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 (2.0~3.465V): 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 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.

8. 电路用途介绍

10. 外形尺寸图