text.skipToContent text.skipToNavigation





onsemi NCS32100 Dual-Inductive Position Sensor

A unique combination of high accuracy at high speed AND low cost

onsemi is raising the bar for industrial rotary position sensors. The NCS32100 dual-inductive rotary position sensor is an integrated, highly configurable, simple, and easy-to-use solution that offers highly differentiated performance with high accuracy (+/- 50 arcsec) at high speed (6,000 RPM*). The NCS32100 is used in a dual-PCB solution enabling high accuracy and high speed. It is a low-cost solution that is simple and easy to use.

The two PCBs - a rotor with two printed inductors and a stator with printed inductors as well as an encoder IC - enable accuracy greater than +/-50 arcsec for a 38mm sensor. It has full accuracy up to 6,000 RPM, and can operate at speeds up to 45,000 RPM maximum with reduced accuracy above 6,000 RPM. It has 20-bit single-turn resolution output and 24-bit multi-turn resolution output.

Featuring an integrated MCU with firmware, the NCS32100 outputs position and velocity rather than raw analog signals. The device is also significantly less sensitive to vibration, temperature, or contaminants. The contactless encoder can provide position data even when the rotor is not moving.

The position sensor can reduce the overall BOM because it requires far fewer additional components than other solutions. For Automotive applications, please review the AEC qualified, ISO26262 ASIL B compliant Inductive Position Sensor solution, NCV77320.

Inductive Position Sensors are an alternative method to optical and magnetic encoders for measuring rotational position. Several improvements have been made by onsemi to the inductive sensor design that allows it to get to better accuracies while still maintaining the benefits of inductive encoding such as low sensitivity to contaminants and vibration. Fill in the form to the right to receive the application note - it summarizes the sensor improvements that are utilized by the NCS32100 to get better than 50 arcsec accuracies with extremely good repeatability using only PCBs for the rotor and stator.

Position Sensor Anatomy: onsemi NCS32100

onsemi NCS32100: Applications

  • Servo loops
  • Robot / Cobot
  • Autonomous Mobile Robot (AMR)
  • Automatic Vehicle Guidance
  • Encoder Module (including for factory equipment, elevators, etc.)
  • Forklift
  • Throttle Position
  • Chassis Height
  • Actuators Position Feedback
  • Lever Position
  • Linear Actuator
  • Level Sensors