Parameter	Symbol	Min.	Typical	Max.	Unit	Note
Transmitter Section:
Input differential impedance	Rin	90	100	110	W	1
Single ended data input swing	Vin PP	250		1200	mVp-p
Transmit Disable Voltage	VD	Vcc – 1.3		Vcc	V	2
Transmit Enable Voltage	VEN	Vee		Vee+ 0.8	V
Transmit Disable Assert Time	Tdessert			10	us
Receiver Section:
Single ended data output swing	Vout,pp	300		800	mv	3
LOS Fault	Vlosfault	Vcc – 0.5		VCC_host	V	5
LOS Normal	Vlos norm	Vee		Vee+0.5	V	5
Power Supply Rejection	PSR	100			mVpp	6

Parameter	Symbol	Min.	Typical	Max.	Unit	Note
Transmitter Section:
Center Wavelength	λc	1530	1550	1570	nm
Spectral Width	σ			1	nm
Sidemode Supression ratio	SSRmin	30			dB
Optical Output Power	Pout	-9		-3	dBm	1
Extinction Ratio	ER	9			dB
Optical Rise/Fall Time	tr / tf			260	ps	2
Relative Intensity Noise	RIN			-120	dB/Hz
Total Jitter Contribution	TX Δ TJ			0.284	UI	3
Eye Mask for Optical Output	Compliant with IEEE802.3 z (class 1 laser safety)
Receiver Section:
Optical Input Wavelength	λc	1270	1310	1600	nm
Receiver Overload	Pol	-3			dBm	4
RX Sensitivity	Sen			-24	dBm	4
RX_LOS Assert	LOS A	-40			dBm
RX_LOS De-assert	LOS D			-25	dBm
RX_LOS Hysteresis	LOS H	0.5			dB
General Specifications:
Data Rate	BR		1.25		Gb/s
Bit Error Rate	BER			10-12
Max. Supported Link Length on 9/125μm SMF@1.25Gb/s	LMAX		20		km
Total System Budget	LB	14			dB

Dimension

Description

Iseelink GPSF-B31(55)12-20D optical transceivers are a high performance, cost effective module which have a single LC optics interface.
They are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA) and Digital diagnostics functions are available via the 2-wire serial bus specified in SFF-8472.
The receiver section uses a PIN receiver and the transmitter uses a 1550 nm DFB laser, up to 14dB link budge ensure this module 1000Base-LX Ethernet 20km application.

Features

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