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155Mbps 1310nm 40km SFP Optical Transceiver

155Mbps 1310nm 40km SFP Optical Transceiver

Features

* Up to 155Mbps data-rate

* 1310nm FP laser and PIN photodetector for 40km transmission

* Compliant with SFP MSA and SFF-8472 with duplex LC receptacle

* Digital Diagnostic Monitoring:

Internal Calibration or External Calibration

* Compatible with RoHS

* +3.3V single power supply

* Operating case temperature:

Standard : 0 to +70°C

Industrial : -40 to +85°C

Applications

* SDH STM-1, S-1.1,L-1.1, L-1.2

* SONET OC-3 IR1,LR1,LR2

* Other optical links

Description

The SFP transceivers are high performance, cost effective modules supporting 155Mbps data-rate and 40km 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.

The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA.

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				155		Mbps

Optical and Electrical Characteristics

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	-5		0	dBm	1
Extinction Ratio			ER	9			dB
Data Input Swing Differential			V_IN	300		1860	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						-34	dBm	3
Receiver Overload				-3			dBm	3
LOS De-Assert			LOS_D			-36	dBm
LOS Assert			LOS_A	-45			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:

The optical power is launched into SMF.
PECL input, internally AC-coupled and terminated.
Measured with a PRBS 2²³-1 test pattern @155Mbps, BER ≤1×10^-1⁰.
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	-5 to 0	dBm	±3dB	Internal / External
RX Power	-28 to -3	dBm	±3dB	Internal / External

Ordering information

Part Number	Product Description
BT-OC3-40	155Mbps, 1310nm, 40km, 0ºC ~ +70ºC, With Digital Diagnostic Monitoring
BT-OC3-40I	155Mbps, 1310nm, 40km, -40ºC ~ +85ºC, With Digital Diagnostic Monitoring