10.3125-Gbps SFP+ LR reference design evaluation board


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Our  evaluation board for the 10.3125-Gbps SFP+ LR reference design was designed to show the optical performance of the ONET1151L laser driver, the ONET8551T high-gain transimpedance amplifier (TIA) and the ONET1151P limiting amplifier.

The ONET1151L is used to drive a 1310-nm DFB laser in an LC transmit optical sub-assembly (TOSA). The ONET1151P is used to amplify the signal from the PIN-TIA LC receive optical sub-assembly (ROSA) which contains the ONET8551T TIA. An MSP430FR5728 microcontroller (MCU) is used to control the setup of the ONET1151L and ONET1151P in conjunction with a graphical user interface (GUI). The MSP430™ MCU also stores the register settings in FRAM. The TPS82693 high-efficiency MicroSiP step-down converter is used to supply 2.85 V to the ICs to decrease the module power dissipation.

This design is a functional SFP+ module used to show the performance of the transmitter and receiver. Digital diagnostics and temperature compensation of the laser driver modulation current are not included.

  • Enables <1-W 10GBASE-LR SFP+ transceiver
    • Decreased component power consumption (<1 W)
    • Low power supply voltage (2.85 V)
    • High mask margin for both receiver and transmitter
  • Decreases customer evaluation time
    • Includes SFP+ host board and user-friendly GUI
Optical networking ICs
ONET1151L 11.3-Gbps low-power laser diode driver ONET1151P 11.3-Gbps limiting amplifier ONET8551T 11.3-Gbps limiting transimpedance amplifier with RSSI

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Evaluation board

ONET-10G-EVM – ONET-10G-EVM: 10.3125Gbps SFP+ LR Reference Design Evaluation Board

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Technical documentation

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Type Title Date
More literature ONET-10G-EVM EU Declaration of Conformity (DoC) Jan. 02, 2019
Datasheet MSP430FR573x Mixed-Signal Microcontrollers datasheet (Rev. L) Dec. 05, 2017
Datasheet TPS8269x High-Efficiency MicroSIP Step-Down Converter (Profile <1 mm) datasheet (Rev. C) Apr. 01, 2015
Datasheet HIGH-EFFICIENCY MicroSiP™ STEP-DOWN CONVERTER (PROFILE <1mm) datasheet (Rev. B) Jan. 28, 2014
Datasheet 11.3 Gbps Low Power Laser Diode Driver datasheet Dec. 03, 2013
Datasheet 11.3 Gbps Limiting Transimpedance Amplifier With RSSI, ONET8551T datasheet Oct. 24, 2013
Datasheet 11.3Gbps Limiting Amplifier datasheet Sep. 27, 2013

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