10G SFP+ LRM 1310nm 220m SFP Transceiver

Features

* Supports 9.95 to 10.3Gbps bit rates

* Transmission distance up to 220m (OM1 fiber)

* Hot Pluggable SFP+ footprint

* 1310nm FP transmitter, PIN photo-detector

* Digital Status monitoring Interface

* Duplex LC connector

* RoHS compliant and Lead Free

* Metal enclosure for lower EMI

* Single 3.3V power supply

* Power dissipation < 1W

* Operating case temperature: 0 to 70℃

* Compliant with FC-PI-4 800-Mx-SN-I, SFF-8431 , SFF-8432 and SFF-8472

Applications

* 10GBASE-LRM 10G Ethernet

* Legacy FDDI multimode links

Product description

SFP+ LRM is an optical transceiver module for transmission at 1310nm over legacy multimode fiber. Supporting 10GBASE-LRM Ethernet standard make it ideally suited for 10G datacom. Its very low power consumption and its excellent EMI performance allow system design with high port density. The small form factor integrates a 1310nm Fabry-Perot (FP) laser in an LC package and a linear multimode PIN receiver.

This module is lead free, RoHS compliant and is designed and tested in accordance with industry safety standards.This SFP+ transceiver is a linear-interface transceiver that enables, in conjunction with an Electronic Dispersion Compensation (EDC) on the host board, an IEEE802.3aq 10GBASE-LRM compliant link. The host board EDC provides correction for the severe modal dispersion that may occur during propagation through multimode fiber links, including legacy installed FDDI multimode fiber (see IEEE802.3aq for detailed information regarding fiber coverage).

Unlike the XFP MSA transceiver requirements, the SFP+ transceiver does not contain internal retiming circuitry, and thus some of the Transmitter Optical Characteristics stated in this data sheet require that the Host Board is compliant to the SFP+ MSA specifications. See Chapter 3 in Reference [1] for further details.

Pin definition

The SFP+ modules are hot-pluggable. Hot pluggable refers to plugging in or unplugging a module while the host board is powered. The SFP+ host connector is a 0.8 mm pitch 20 position right angle improved connector specified by SFF-8083, or stacked connector with equivalent with equivalent electrical performance.

Host PCB contact assignment is shown in Figure 2 and contact definitions are given in Table 2.

SFP+ module contacts mates with the host in the order of ground, power, followed by signal as illustrated by Figure 3 and the contact sequence order listed in Table 2.

Figure 3: Module Contact Assignment

Table 2: SFP+ Module PIN Definition

Absolute maximum rating

These values represent the damage threshold of the module. Stress in excess of any of the individual Absolute Maximum Ratings can cause immediate catastrophic damage to the module even if all other parameters are within Recommended Operating Conditions.

Parameters	Symbol	Min.	Max.	Unit
Power Supply Voltage	V_CC	0	+3.6	V
Storage Temperature	Tc	-40	+85	°C
Operating Case Temperature	Tc	0	+70	°C
Relative Humidity	RH	5	95	%

Table 3: Absolute Maximum Rating

Recommended operating environment

Recommended Operating Environment specifies parameters for which the electrical and optical characteristics hold unless otherwise noted.

Parameter	Symbol	Min.	Typical	Max	Unit
Power Supply Voltage	V_CC	3.135	3.300	3.465	V
Operating Case Temperature	T_C	0	25	70	°C

Table 4: Recommended Operating Environment

LOW Speed Characteristics

Parameter	Symbol	Min.	Typical	Max	Unit
Power Consumption			1.2	1.2	W
TX_Fault,RX_LOS	VOL	0		0.4	V
TX_Fault,RX_LOS	VOH	Host_Vcc-0.5		Host_Vcc+0.3	V
TX_DIS	VIL	-0.3		0.8	V
TX_DIS	VIH	2.0		VCCT+0.3	V
RS0,RS1	VIL	-0.3		0.8	V
RS0,RS1	VIH	2.0		VCCT+0.3	V

Electrical characteristics

Parameter	Conditions	Symbol	Min.		Typical	Max	Unit
Nominal Data Rate		VID			10.3125		Gbps
Supply Voltage		Vcc	3.14			3.46	V
Supply Current		Icc			200	300	mA
Power Dissipation		P				1	W
Transmitter
Input differential impedance	2	Rin			100		Ω
Single ended data input swing	3	Vin,pp	90			350	mV
Transmit Disable Voltage	4	VD	2			Vcc	V
Transmit Enable Voltage		VEN	Vee			Vee+ 0.8	V
Receiver
Termination Mismatch at 1 MHz		ΔZM				5	%
Single Ended Output Voltage Tolerance			-0.3			4.0	V
Output AC Common Mode Voltage						7.5	mV RMS
Output Rise and Fall time (20% to 80%)	5	Tr, Tf		30			Ps
Relative Noise LRM Links with crosstalk	6	dRNx				TBD equation	dB/Hz
Difference Waveform Distortion Penalty	7	dWDP		per SFF-8431			dB
Differential Voltage Modulation Amplitude		VMA		180		600	mV
LOS Fault	8	VLOS fault		2		VccHOST	V
LOS Normal	8	VLOS norm		Vee		Vee+ 0.8	V
Power Supply Noise Tolerance	9	VccT/VccR		per SFF-8431			mVpp

Notes:

Non-condensing.
Connected directly to TX data input pins. AC coupling from pins into laser driver IC.
Per SFF-8431 Rev 3.0
Into 100 ohms differential termination.
Measured with Module Compliance Test Board and OMA test pattern.
Crosstalk source rise/fall time (20%-80%) is 35 ps.
Defined with reference receiver with 14 T/2 spaced FFE taps and 5 T spaced DFE taps.
LOS is an open collector output. Should be pulled up with 4.7k – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.
As described in Section 2.8.1, SFF-8431 Rev 3.0.

General Specifications

Parameter		Symbol	Min.	Typical	Max	Unit	Notes
Bit Rate		BR		10.3125		Gb/sec	1
Bit Error Ratio		BER			10-12		2
Maximum Supported Distances
Fiber Type	1310nm OFL Bandwidth
62.5μm	“FDDI” 160MHz/km	Lmax			220	m	3
62.5μm	OM1 200MHz/km	Lmax			220	m	3
50μm	400MHz/km	Lmax			100	m	3
	OM2 500MHz/km				220
	OM3 2000MHz/km				220

Notes:

10GBASE-LRM
Tested with a 231 – 1 PRBS
Operating range as defined by IEEE standards. Longer reach possible depending upon link implementation.

Optical characteristics

Parameter	Symbol	Min.	Typical	Max	Unit	Notes
Transmitter
Center Wavelength	λt	1260		1355	nm
RMS spectral width	λrms @1260nm	-	-	2.4	nm	2
	λrms @ 1260nm-1300			2.4
	λrms @ 1300nm-1355			4
Average Optical Power	Pavg	-6.5	-	0.5	dBm	1
Extinction Ratio	ER	3.5	-	-	dB
Optical Modulation Amplitude (OMA)	POMA	-4.5		+1.5	dBm
Peak Launch Power	PMAX			3	dBm
Transmitter Waveform Dispersion Penalty	TWDP			4.7	dB	3
Average Launch power of OFF transmitter	POFF			-30	dBm
Uncorrelated Jitter [rms]	Txj			0.033	UI
Encircled Flux	<5μm	30			%
Encircled Flux	<11μm	81			%
Transmitter Reflectance				-12	dB
Optical Return Loss Tolerance		20			dB
Relative Intensity Noise	Rin			-128	dB/Hz
Receiver
Comprehensive Stressed Receiver Sensitivity (OMA) @ 10.3125Gb/s	Precursor	-	-	-6.5	dBm	5
	Symmetrical			-6	dBm
	Postcursor			-6.5	dBm
LOS Assert	LosA	-30	-		dBm
LOS De-assert	LosD			-11	dBm
Overload	PMAX	-+1.5	-		dBm	4
Receiver Reflectance		-	-	-12	dB
LOS Hysteresis		0.5			dB

Notes:

Average power figures are informative only, per IEEE802.3aq
Maximum RMS spectral width as specified by Figure 3
Optical Eye Mask requires the host board to be SFF-8431 compliant. Optical eye mask per IEEE802.3aq.
TWDP figure requires the host board to be SFF-8431compliant. TWDP is calculated using the Matlab code provided in clause 68.6.6.2 of IEEE802.3aq
Receiver overload specified in OMA and under the worst comprehensive stressed condition.
Conditions of stressed receiver tests per IEEE802.3aq. CSRS testing requires the host board to be SFF-8431 compliant.

Digital Diagnostic Functions

The following digital diagnostic characteristics are defined over the Recommended Operating Environment unless otherwise specified. It is compliant to SFF8472 Rev9.2 with internal calibration mode. For external calibration mode please contact our sales stuff.a

Parameter	Symbol	Min.	Max	Unit	Notes
Accuracy
Transceiver Temperature	DMI_Temp	-3	+3	degC	Over operating temp
TX Output optical power	DMI_TX	-3	+3	dB
RX Input optical power	DMI_RX	-3	+3	dB	-3dBm to -12dBm range
Transceiver Supply voltage	DMI_VCC	-0.08	+0.08	V	Full operating range
Bias current monitor	DMI_Ibias	-10%	10%	mA
Dynamic Range Accuracy
Transceiver Temperature	DMI_Temp	-5	70	degC
TX Output optical power	DMI_TX	-9	-1	dBm
RX Input optical power	DMI_RX	-18	0	dBm
Transceiver Supply voltage	DMI_VCC	3.0	3.6	V
Bias current monitor	DMI_Ibias	0	16	mA