Capacitive sensors

High-precision & robust capacitive sensing for hands on detection (HOD), as well as for touch, presence, and fluid detection.

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Overview

Infineon's capacitive sensors combine ultra-high sensitivity and functional safety for next-generation Automotive Applications. Our Superior Robustness is enabled by advanced I/Q demodulation which allows to measure capacitive and resistive components separately. Demanding Applications like Hands on Detection (HOD), button-less interaction and next-generation HMI concepts are enabled by our most-reliable Sensors.

Key Features

  • Most Robust Measurement Principle
  • Ultra-high sensitivity (fF range)
  • Wide measurement range
  • Active Shielding
  • High-resolution capacitive sensing
  • Multi-channel sensing capability
  • Functional Safety Compliant

Products

About

High-sensitivity capacitive sensing for accurate detection

Infineon's capacitive sensing ICs deliver outstanding measurement precision using advanced I/Q demodulation technology. By separating capacitive and resistive components, the system provides highly reliable and stable sensing results even in the most challenging environments.

With sensitivities down to the femtofarad range and resolution up to 15 bits, these solutions enable detection of even the smallest changes such as human touch, proximity, or material variations. A wide measurement range ensures flexibility across applications, from large-area sensing like steering wheels to precise fluid level monitoring.

Designed for automotive robustness under all environmental conditions

Built for demanding automotive environments, Infineon's capacitive sensors offer most robust measurement data, leveraging a superior measurement principle. Features such as frequency hopping, active shielding, and stable signal processing ensure consistent performance even in noisy environments (EMC). 

Automotive-grade qualification (AEC-Q100 grade 1) and Functional Safety Compliant design enable deployment in safety-critical applications such as steering wheel hands-on detection and seat occupancy sensing. The combination of durability and accuracy ensures long-term reliability while reducing system complexity and maintenance requirements.

Supporting Applications with Functional Safety Requirements

Infineon's capacitive sensing solutions are designed to support functional safety requirements up to ASIL B according to ISO 26262. Integrated diagnostics and monitoring features enable safe system operation and simplify compliance with automotive safety standards.

This makes the sensors suitable for safety-relevant use cases such as driver monitoring, human presence detection, and system control inputs. By combining precision sensing with a safety-ready architecture, these solutions help enable next-generation automotive systems that demand both performance and reliability.

One technology for proximity, presence, and fluid sensing

Unlike conventional touch solutions, capacitive sensing from Infineon goes far beyond simple input detection. The same sensing technology can identify human presence, detect gesture or proximity, and even measure fluid level and quality.

Applications range from intuitive touch interfaces and non-contact door handles to next-generation HMI and liquid monitoring systems. This versatility enables OEMs to standardize on a single sensing platform across multiple use cases, reducing system complexity while unlocking innovative user experiences.

High-sensitivity capacitive sensing for accurate detection

Infineon's capacitive sensing ICs deliver outstanding measurement precision using advanced I/Q demodulation technology. By separating capacitive and resistive components, the system provides highly reliable and stable sensing results even in the most challenging environments.

With sensitivities down to the femtofarad range and resolution up to 15 bits, these solutions enable detection of even the smallest changes such as human touch, proximity, or material variations. A wide measurement range ensures flexibility across applications, from large-area sensing like steering wheels to precise fluid level monitoring.

Designed for automotive robustness under all environmental conditions

Built for demanding automotive environments, Infineon's capacitive sensors offer most robust measurement data, leveraging a superior measurement principle. Features such as frequency hopping, active shielding, and stable signal processing ensure consistent performance even in noisy environments (EMC). 

Automotive-grade qualification (AEC-Q100 grade 1) and Functional Safety Compliant design enable deployment in safety-critical applications such as steering wheel hands-on detection and seat occupancy sensing. The combination of durability and accuracy ensures long-term reliability while reducing system complexity and maintenance requirements.

Supporting Applications with Functional Safety Requirements

Infineon's capacitive sensing solutions are designed to support functional safety requirements up to ASIL B according to ISO 26262. Integrated diagnostics and monitoring features enable safe system operation and simplify compliance with automotive safety standards.

This makes the sensors suitable for safety-relevant use cases such as driver monitoring, human presence detection, and system control inputs. By combining precision sensing with a safety-ready architecture, these solutions help enable next-generation automotive systems that demand both performance and reliability.

One technology for proximity, presence, and fluid sensing

Unlike conventional touch solutions, capacitive sensing from Infineon goes far beyond simple input detection. The same sensing technology can identify human presence, detect gesture or proximity, and even measure fluid level and quality.

Applications range from intuitive touch interfaces and non-contact door handles to next-generation HMI and liquid monitoring systems. This versatility enables OEMs to standardize on a single sensing platform across multiple use cases, reducing system complexity while unlocking innovative user experiences.

Design resources

Developer community