10G 1310nm 220m SFP+ Transceiver SPT-SFP+-LRM

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. Module is lead free, RoHS compliant and is designed and tested in accordance with industry safety standards.

The SPT-SFP-LRM 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 2: 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.

Table 3: Absolute Maximum Rating

Recommended operating environment

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

Table 4: Recommended Operating Environment

LOW Speed Characteristics

Electrical characteristics

Notes:

1. Non-condensing.

2. Connected directly to TX data input pins. AC coupling from pins into laser driver IC.

3. Per SFF-8431 Rev 3.0

4. Into 100 ohms differential termination.

5. Measured with Module Compliance Test Board and OMA test pattern.

6. Crosstalk source rise/fall time (20%-80%) is 35 ps.

7. Defined with reference receiver with 14 T/2 spaced FFE taps and 5 T spaced DFE taps.

8. 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.

9. As described in Section 2.8.1, SFF-8431 Rev 3.0.

General Specifications

Notes:

1. 10GBASE-LRM

2. Tested with a 231 – 1 PRBS

3. Operating range as defined by IEEE standards. Longer reach possible depending upon link implementation.

Optical characteristics

Notes:

1. Average power figures are informative only, per IEEE802.3aq

2. Maximum RMS spectral width as specified by Figure 3

3. Optical Eye Mask requires the host board to be SFF-8431 compliant. Optical eye mask per IEEE802.3aq.

4. 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

5. Receiver overload specified in OMA and under the worst comprehensive stressed condition.

6. 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.

Control and status I/O timing characteristics

Timing characteristics of control and status I/O are included in Table 8, which is also defined in SFF-8431.

Table 8: Timing Characteristics

Mechanical

Table 4: Key Mechanical Dimensions

ESD

This transceiver is specified as ESD threshold 2kV for all electrical input pins, tested per MIL-STD-883, Method 3015.4 /JESD22-A114-A (HBM). However, normal ESD precautions are still required during the handling of this module. This transceiver is shipped in ESD protective packaging. It should be removed from the packaging and handled only in an ESD protected environment.

LASER SAFTY

This is a Class 1 Laser Product according to IEC 60825-1:1993:+A1:1997+A2:2001. This product complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated (July 26, 2001)

Ordering information

E-mail: sales@sopto.com

Web : http://www.sopto.com