SPT-PB4548-L80D 2.488Gbps WDM SFP Transceiver, 80km Reach 1490nm TX/1550nm RX

SPT-PB4548-L80D

2.488Gbps SFP Bi-Directional Transceiver, 80km Reach 1490nm TX / 1550 nm RX

Features
Dual data-rate of 2.488Gbps/2.125Gbps operation
1490nm DFB laser and APD photo detector for 80km transmission
Compliant with SFP MSA and SFF-8472 with simplex 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
Applications
SDH STM-16 and SONET OC-48 system
Fiber Channel
Switch to Switch interface
Switched backplane applications
Router/Server interface
Other optical transmission systems
Description
The SFP-BIDI transceivers are high performance, cost effective modules supporting dual data-rate of 2.488Gbps/2.125Gbps and 80km transmission distance with SMF.
The transceiver consists of three sections: a DFB laser transmitter, an APD 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.

Module Block Diagram

SPT-PB4548-L80D 2.488Gbps SFP Bi-Directional Transceiver, 80km Reach 1490nm TX / 1550 nm RX

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

Parameter		Symbol	Min	Typical	Max	Unit
Operating Case Temperature	Commercial	Tc	0		+70	°C
Power Supply Voltage		Vcc	3.13	3.3	3.47	V
Power Supply Current		Icc			300	mA
Data Rate				2.488		Gbps
Data Rate				2.125		Gbps

Optical and Electrical Characteristics

Parameter		Symbol	Min	Typical	Max	Unit	Notes
Transmitter
Centre Wavelength		λc	1470	1490	1510	nm
Spectral Width(-20dB)		∆λ			1	nm
Side Mode Suppression Ratio		SMSR	30			dB
Average Output Power		Pout	0		+5	dBm	1
Extinction Ratio		ER	9			dB
Optical Rise/Fall Time(20%~80%)		tr/tf			0.16	ns
Data Input Swing Differential		VIN	400		1800	mV	2
Input Differential Impedance		ZIN	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	1530		1570	nm
Receiver Power Low					-28	dBm	3
Receiver Power High			-9			dBm	3
Receiver Overload			-9
LOS De-Assert		LOSD			-31	dBm
LOS Assert		LOSA	-35			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 2-1 test pattern @2488Mbps, BER ≤1×10
4. Internally AC-coupled.

Recommended Interface Circuit