1.25G Transceivers

1.25Gb/s SFP TX1490/RX1310nm 20KM Optical Transceiver Module

Product description: ACS-GE-B4931-LR Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA), The transceiver consists of five sections: the LD dri
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Features

l Up to 1.25Gb/s data links

l 1490nm DFB laser transmitter and PIN photo-detector

l Up to 20km on 9/125µm SMF

l Hot-pluggable SFP footprint

l BIDI LC/UPC type pluggable optical interface

l Low power dissipation

l Metal enclosure, for lower EMI

l RoHS compliant and lead-free

l Support Digital Diagnostic Monitoring interface

l Single +3.3V power supply

l Compliant with SFF-8472

l Case operating temperature

Commercial: 0 ~ +70oC

Industrial: -40 ~ +85oC

Optical Characteristics

The following optical characteristics are defined over the Recommended Operating Environment unless otherwise specified.

Parameter	Symbol	Min.	Typical	Max		Unit	Notes
Transmitter
Center Wavelength	λ_C	1470	1490		1510	nm
Spectrum Bandwidth(RMS)	σ				1	nm
Side Mode Suppression Ratio	SMSR	30				dB
Average Optical Power	P_AVG	-9			-3	dBm	1
Optical Extinction Ratio	ER	9				dB
Transmitter OFF Output Power	POff				-45	dBm
Transmitter Eye Mask		Compliant with 802.3z(class 1 laser safety)					2

Parameter	Symbol	Min.	Typical	Max		Unit	Notes
Receiver
Center Wavelength	λ_C	1260	1310		1360	nm
Receiver Sensitivity (Average Power)	Sen.				-20	dBm	3
Input Saturation Power (overload)	Psat	-3				dBm
LOS Assert	LOSA	-36				dB	4
LOS De-assert	LOSD				-21	dBm	4
LOS Hysteresis	LOSH	0.5	2		6	dBm

Notes:

1. Measure at 2^7-1 NRZ PRBS pattern

2. Transmitter eye mask definition.

3. Measured with Light source 1490nm, ER=9dB; BER =<10^-12 @PRBS=2^7-1 NRZ

4. When LOS de-asserted, the RX data+/- output is High-level (fixed).
Ordering Information