Module SFP 2 sợi LC SM, 1.25G-20KM- 1310nm

Module 2 sợi LC SM, 1.25G-20KM

– Chuẩn kết nối LC Duplex single mode
– Hãng B&TON

– Bước sóng 1310nm
– Mã: BT-OC24-20
– Khoảng cách 20km, loại 1.25G

Danh mục: CONVECTOR MEDIA-SFP- SWICTH

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SFP-GE-LX
1000BASE-LX GE SFP Transceiver, LC, dual fiber, 1310nm, 20km
(1.25Gbps SFP Transceiver, 20km Reach with DDMI)

Features
►Dual data-rate of 1.25Gbps/1.063Gbps operation
1310nm FP laser and PIN photodetector for 20km transmission
►Compliant with SFP MSA and SFF-8472 with duplex LC receptacle
►Digital Diagnostic Monitoring:
Internal Calibration or External Calibration
►Compatible with SONET OC-24-LR-1
►Compatible with RoHS
►+3.3V single power supply
►Operating case temperature:
Standard : 0 to +70°C
Industrial : -40 to +85°C
Applications
►Gigabit Ethernet
►Fiber Channel
►Switch to Switch interface
►Switched backplane applications
►Router/Server interface
►Other optical transmission systems

Description
The SFP-GE-LX transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps/1.0625Gbps and 20km transmission distance with SMF.
The transceiver consists of three sections: a FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.

Absolute Maximum Ratings
Table 1 – 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
Table 2 – Recommended Operating Conditions

Parameter			Symbol	Min	Typical	Max	Unit
Operating Case Temperature		Standard	Tc	0		+70	°C
Operating Case Temperature		Industrial	Tc	-40		+85	°C
Power Supply Voltage			Vcc	3.13	3.3	3.47	V
Power Supply Current			Icc			300	mA
Data Rate	Gigabit Ethernet				1.25		Gbps
Data Rate	Fiber Channel				1.063		Gbps

Optical and Electrical Characteristics
SFP-GE-LX: (FP and PIN, 1310nm, 20km Reach)
Table 3 – Optical and Electrical Characteristics

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	-9		-3	dBm	1
Extinction Ratio			ER	9			dB
Optical Rise/Fall Time (20%~80%)			tr/tf			0.26	ns
Data Input Swing Differential			V_IN	400		1800	mV	2
Input Differential Impedance			Z_IN	90	100	110	Ω
TX Disable	Disable			2.0		Vcc	V
TX Disable	Enable			0		0.8	V
TX Fault	Fault			2.0		Vcc	V
TX Fault	Normal			0		0.8	V
Receiver
Centre Wavelength			λc	1260		1580	nm
Receiver Sensitivity						-23	dBm	3
Receiver Overload				-3			dBm	3
LOS De-Assert			LOS_D			-24	dBm
LOS Assert			LOS_A	-30			dBm
LOS Hysteresis				1		4	dB
Data Output Swing Differential			Vout	400		1800	mV	4
LOS			High	2.0		Vcc	V
LOS			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 2⁷-1 test pattern @1250Mbps, BER ≤1×10^-12.
4. Internally AC-coupled.
Timing and Electrical
Table 4 – 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	V_H	2		Vcc	V
MOD_DEF (0:2)-Low	V_L			0.8	V

Diagnostics
Table 5 – Diagnostics Specification

Parameter	Range	Unit	Accuracy	Calibration
Temperature	0 to +70	°C	±3°C	Internal / External
Temperature	-40 to +85	°C	±3°C	Internal / External
Voltage	3.0 to 3.6	V	±3%	Internal / External
Bias Current	0 to 100	mA	±10%	Internal / External
TX Power	-9 to -3	dBm	±3dB	Internal / External
RX Power	-23 to -3	dBm	±3dB	Internal / External