Inductive Sensing 32-Position Encoder Knob Reference Design using the LDC0851
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Key Document


An inductive sensing based incremental encoder knob design can provide a robust and low-cost interface for control inputs.  It can reliably operate in environments which have dirt, moisture, or oil which would pose issues for alternate sensing technologies. This solution requires no magnets.

  • High reliability, contactless, encoder implementation suitable for dirty, wet, and other challenging environments
  • Scalable to support multiples of 4 positions/rotation
  • Minimal MCU requirements
  • No permanent magnets required; operates effectively even with magnetic or electrical environmental interference

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TI Devices (4)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LDC0851  Differentially Compensated and Highly Accurate Inductive Switch  Specialty sensors  Sample & Buy View Design Kits & Evaluation Modules
LP5951  Micropower 150mA Low-Dropout (LDO) CMOS Voltage Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
MSP430F5500  Mixed Signal Microcontroller  Microcontrollers (MCU)  Not Available View Design Kits & Evaluation Modules
TPD2E001  Low-Capacitance 2-Channel +/-15kV ESD Protection Array for High-Speed Data Interfaces  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LDC0851 Download Download
LP5951 Download Download
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MSP430F5500 Download Download
TPD2E001 Download -
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 2281 28 Jan 2016
Design files (6)
Title Type Size (KB) Date
ZIP 564 30 Mar 2016
ZIP 554 30 Mar 2016
PDF 1195 30 Mar 2016
PDF 178 30 Mar 2016
PDF 215 30 Mar 2016
PDF 282 30 Mar 2016
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Reference Designs  ( 2 )

Software (1)

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