TIDA-01187

LIDAR-Pulsed Time-of-Flight Reference Design Using High-Speed Data Converters

TIDA-01187

Design files

Overview

Time-of-flight (ToF) optical methods for measuring distance with high precision are utilized in a variety of applications, such as laser safety scanners, range finders, drones, and guidance systems. This design details the advantages of a high-speed data-converter-based solution, including target identification, relaxed sample-rate requirements, and a simplified signal chain. The design also addresses optics, driver and receiver front-end circuitry, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and signal processing.

Features
  • Measurement range up to 9 m or greater
  • Range measurement mean error of <±6 mm and standard deviation of <3 cm
  • 5.75-W pulsed 905-nm near-infrared laser diode and driver with <1-mW average output power
  • Laser collimation and photo receiver focusing optics
  • Includes 14-bit, 125-MSPS ADCs and 16-bit, 500-MSPS DAC high-speed amplifiers and clocking
  • Pulsed ToF measurement method with DFT-based range estimation
  • Automotive grade versions available for select devices

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUC73B.PDF (1711 K)

Reference design overview and verified performance test data

TIDRPY4.PDF (75 K)

Detailed schematic diagram for design layout and components

TIDRPY5.PDF (54 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRPY6.PDF (48 K)

Detailed overview of design layout for component placement

TIDRPY8.ZIP (303 K)

Files used for 3D models or 2D drawings of IC components

TIDCD73.ZIP (105 K)

Design file that contains information on physical board layer of design PCB

TIDRPY7.PDF (212 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

High-speed ADCs (>10MSPS)

ADC3244Dual-channel 14-bit 125-MSPS analog-to-digital converter (ADC)

Data sheet document-pdfAcrobat PDF open-in-new HTML
Clock jitter cleaners & synchronizers

CDCM7005High performance, low phase noise, low skew clock synchronizer that synchronizes ref clock to VCXO

Data sheet document-pdfAcrobat PDF open-in-new HTML
Fully differential amplifiers

THS4541High-Speed Differential I/O Amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML
High-speed DACs (>10MSPS)

DAC5682ZDual-Channel, 16-Bit, 1.0-GSPS, 1x-4x Interpolating Digital-to-Analog Converter (DAC)

Data sheet document-pdfAcrobat PDF open-in-new HTML
High-speed op amps (GBW>=50MHz)

OPA695Ultra-Wideband, Current-Feedback Operational Amplifier with Disable

Data sheet document-pdfAcrobat PDF open-in-new HTML
Transimpedance amplifiers

OPA857Ultralow-Noise, Wideband, Pseudo-Differential Output Transimpedance Amplifier

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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* Design guide LIDAR-Pulsed Time-of-Flight Reference Design Using High-Speed Data Converters (Rev. B) Jul. 18, 2017

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