Fluxgate Based Displacement Sensor Reference Design
TIDA-00463
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Key Document

Description

The TIDA-00463 showcases a displacement sensor for linear distance measurements in a BoosterPack form factor for TI LaunchPad.  The design is suitable for any application where a distance measurement, even through non-magnetic materials, is needed and non-contact, wear-free measurements are required.  Through the use of magnetic fluxgate technology, this design is able to cover a wide measurement distance while achieving high resolution and accuracy.

Features
  • Measures 10cm distance, 1mm resolution, with a 6mm diameter NdFeB magnet(Hc>1350kA/m)
  • Able to detect the presence of the magnet up to 30cm
  • Common mode fields rejection
  • Temperature range: -40°C to 125°C
  • No temperature dependent: Max Temp Drift=100nT/°C

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS1248  24-Bit, 2kSPS, 8-Ch Delta-Sigma ADC for Precision Sensor Measurement  Analog-to-digital converters (ADCs)  Sample & Buy Not Available
DRV425  Fully-integrated fluxgate magnetic sensor for open-loop applications  Specialty sensors  Sample & Buy View Design Kits & Evaluation Modules
TPS717  150mA, High PSRR, Low Quiescent Current, Low Noise LDO  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS1248 Download Download
DRV425 Download Download
TPS717 Download Download
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1566 22 Jan 2016
Design files (6)
Title Type Size (KB) Date
ZIP 348 11 Dec 2015
ZIP 512 11 Dec 2015
PDF 969 11 Dec 2015
PDF 169 11 Dec 2015
PDF 85 11 Dec 2015
PDF 241 11 Dec 2015

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