TIDA-00460 Reference Design

Texas Instruments

Inductive Linear Position Sensing Booster Pack Reference Design

Description

Typical implementations of distance measurements use expensive rare-earth magnets. To lower overall system cost: this reference design walks through the implementation of industry’s first inductance-to-digital converters from TI for linear position sensing without the use of any expensive rare-earth magnets. Linear position sensing determines the position of a target that moves laterally across an inductive sensor that is generating a magnetic field. An inductance-to-digital converter (LDC): like the LDC1000 or LDC1101: senses inductance changes of an inductor that comes into proximity with a conductive target: such as a piece of metal. The LDC measures this inductance shift to provide information about the position of a conductive target over a sensor coil. The inductance shift is caused by eddy currents generated in the target due to the magnetic field of the sensor. These eddy currents generate a secondary magnetic field that opposes the sensor field: causing a shift in the observed inductance.

Features
  • Inductive sensing technologyNon-contact detection and measurementIncreased flexibility and performance without requiring analog trimming techniquesRemote sensor placementInsensitive to environmental contaminationsMore reliable operation sensor self-diagnosticHigh resolution and accurateReplace legacy analog only solutionsLow power: low cost and low footprint solution
Applications
  • 3D printer
  • Position sensor
  • Access control
  • Linear motor position sensor
Product Categories
  • Sensors

Parts

Part Number Name Companion Part
LP5951 LP5951 Buy Datasheet
MSP430F5528 MSP430F5528 Buy Datasheet
TPD1E10B06 TPD1E10B06 Buy Datasheet
TPD2E001 TPD2E001 Buy Datasheet

Bill Of Materials

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Schematic

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Other Documents

Title Updated Type Size (KB)
TIDA-00460 Gerber 19 Jun 2015 ZIP 367
TIDA-00460 Assembly Drawing 19 Jun 2015 PDF 189
TIDA-00460 CAD Files 19 Jun 2015 ZIP 3417
TIDA-00460 PCB 19 Jun 2015 PDF 1097
TIDA-00460 BOM 19 Jun 2015 PDF 192
TIDA-00460 Schematic 19 Jun 2015 PDF 618