Micrel SFP+ Reference Design

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General Description

This evaluation board is a complete SFP+ module as

defined in the SFP+ MSA document. The design uses

Micrel's MIC3003 controller, the 10G DFB/FP laser driver

SY88022AL, and any of the following 10G limiting

amplifiers: SY88053C/073L. A picture of the fully loaded

board is shown on the next page.

Datasheets and support documentation are available on

Micrel's web site at: www.micrel.com.

Related Support Documentation

• MIC3003 datasheet: Fibre optic module controller

featuring digital diagnostic monitoring interface, as per

SFF-8472/SFF-8432, with internal/external calibration

and full laser control with bias and modulation current

compensation for temperature variations using lookup

tables.

• SY88022AL datasheet

• SY88053CL datasheet

• SY88073L

• MIC3003 software user's guide.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •

May 13, 2015

SFP+ Module Reference Design

SFP_022AL_R0

Features

• Compliant with SFP+ MSA

• Allows for easy and fast evaluation of Micrel's chipset

for SFP+ module

• Multi-rate operation up to 10Gbps

• Single, wide range power supply: 3.3V ±10%

• Industrial temperature range: –40°C to +85°C

Transmitter – FP/DFP Laser Diode Driver

• Operates from a single 3.3V supply

• Modulation current up to 60mA

• Fast edge rates of 25ps

• Bias current up to 80mA

• Input equalizer

• Small form factor 3mm × 3mm QFN package

Receiver – Limiting Post Amplifier

• External crosspoint adjustment (053CL/073L)

• Digital offset correction (063CL/083L)

• Wide differential input range (5mV

• Wide SD de-assert or LOS assert threshold range

−

3mV

to 30mV

hysteresis

• Fast SD/LOS assert/de-assert time (053CL/063CL)

−

75ns typical; 120ns maximum

• Selectable LOS or SD status signal indicator

• Selectable RXOUT+/RXOUT- polarity (053CL/073L)

• Available in a tiny 3mm × 3mm QFN package

Controller

• Extensive temperature range

• Alarms and warnings interrupt and TXFAULT masks

• Capability to support up to four chips on the serial

interface

• Integrated digital temperature sensor

• Temperature compensation of modulation, bias, and

fault levels via NVRAM lookup tables

• User-writeable EEPROM scratchpad

• Option to be used with Cisco security chip

• Diagnostic monitoring interface per SFF-8472/8432

• Space saving 3mm × 3mm package available

(MIC3003GFL)

to 1800mV

with 4dB typical electrical

http://www.micrel.com

Revision 1.0

)

Table of Contents

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Summary of Contents for Micrel SFP+

Page 1 • Diagnostic monitoring interface per SFF-8472/8432 • Space saving 3mm × 3mm package available (MIC3003GFL) Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com May 13, 2015...
Page 2: Evaluation Board
Micrel, Inc. SFP_022AL_R0 Reference Design Evaluation Board Evaluation Board Setup TOSA and ROSA Installation Receiver Sensitivity and Hysteresis Setting Check the pin configuration of the TOSA and ROSA and The limiting amplifier has a receive signal LOS/SD install them according to the diagram shown in Figure indicator.
Page 3 Micrel, Inc. SFP_022AL_R0 Reference Design Setup and Operation 1. Set the desired frequency on a pattern generator with and register address, then select GET to read the amplitude between 200mV and 1800mV . Typical content or enter a new value, and select SET NEW to...
Page 4 Micrel, Inc. SFP_022AL_R0 Reference Design d. After entering these values, select SET NEW. Then connect the output of the VOA to the input of the Select GET CURRENT to ensure the set values receiver using an appropriate fiber jumper. are written to the registers. You may come back to 19.
Page 5: Evaluation Board Schematic
Micrel, Inc. SFP_022AL_R0 Reference Design Laser Response Tuning Overshoot/Undershoot The damping resistors R1 and R5 installed in series with laser package’s parasitic inductance. The values indicated the laser are 5Ω. This value might be replaced with higher on the schematic and pre-installed on the board...
Page 6 Micrel, Inc. SFP_022AL_R0 Reference Design Evaluation Board Schematic (Continued) Transmitter May 13, 2015 Revision 1.0...
Page 7: Pcb Assembly
Micrel, Inc. SFP_022AL_R0 Reference Design PCB Assembly Bottom May 13, 2015 Revision 1.0...
Page 8: Bill Of Materials
10 Limiting Post Amplifier SFP_022AL_R0 Micrel, Inc. SFP+ module PCB Note: 1. Panasonic: www.panasonic.com. 2. Murata: www.murata.com. 3. TDK: www.tdk.com. 4. Laird Technologies: www.lairdtech.com. 5. Vishay: www.vishay.com. 6. On Semi: www.onsemi.com. 7. Micrel, Inc.: www.micrel.com. May 13, 2015 Revision 1.0...
Page 9 (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale.

Micrel SFP+ Reference Design

Table of Contents

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Summary of Contents for Micrel SFP+

Page 2: Evaluation Board

Page 5: Evaluation Board Schematic

Page 7: Pcb Assembly

Page 8: Bill Of Materials

Table of Contents