CAPSENSE™ controllers

CAPSENSE™ is the world's best capacitive sensing solution with industry-leading water tolerance and proximity sensing

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Infineon CAPSENSE™: Revolutionizing touch sensing™

Capacitive sensing for touch has changed the face of design in consumer and industrial products. Infineon CAPSENSE™ solutions bring elegant, reliable, and easy-to-use capacitive touch sensing functionality to your design via PSOC™ Creator’s CAPSENSE™ component, ModusToolbox™ CAPSENSE™ middleware, or our mechanical button replacement (MBR) portfolio. 

Our capacitive touch sensing solutions have replaced more than four billion mechanical buttons, and they enable hundreds of diverse types of sensing applications.

CAPSENSE™ offers industry-leading low-power operation with an average current consumption of 22 μA and the industry’s widest voltage ranges (1.71 V to 5.5 V). CAPSENSE™ also provides the industry’s best solution for liquid tolerance to prevent false touches in wet/moist environments.

Capacitive sigma delta (CSD) sensing and auto-tuning algorithms

Capacitive sigma delta (CSD) sensing algorithm

Infineon CAPSENSE™ technology consists of the capacitive sigma delta (CSD) sensing algorithm, which provides capacitive sensing using a switched capacitor technique with a delta-sigma modulator that converts the sensing current to a digital code. This patented algorithm provides high sensitivity to ensure accurate touch in noisy environments, industry-leading proximity distances, and allows for fast scan times.

Auto-tuning algorithms

Infineon has also developed auto-tuning algorithms, which provide robust noise immunity and adaptation to changing environments without the need for manual tuning. 

Mechanical button replacement (MBR) products

CAPSENSE™ MBR3

Infineon's solution for quickly and easily replacing mechanical buttons with sleek and reliable capacitive-sensing user interfaces.

CY8CMBR2110

I2C-configurable mechanical button replacement solution that supports up to 10 capacitive touch sensing channels that enable 10 buttons/10 LEDs.

CY8CMBR2044

CY8CMBR2044 solution supports up to four buttons and is quickly configured in hardware, eliminating the need for software tools, firmware development, and chip programming.

CY8CMBR2016

Creating a capacitive matrix keypad has never been simpler. Complete a matrix keypad design (up to 4x4) with CY8CMBR2016, a member of the CAPSENSE™ Express family.

CY8CMBR2010

Hardware-configurable mechanical button replacement solution that supports up to 10 capacitive touch sensing channels that enable 10 buttons/10 LEDs.

CAPSENSE™ Express

These entry-level series of CAPSENSE™ controllers enable you to integrate up to 16 GPIOs for sleek and trendy capacitive sensing solutions.

CAPSENSE™ self-capacitive sensing

CAPSENSE™ capacitive touch sensing technology measures the changes in the capacitance between a plate (the sensor) and its environment to detect the presence of a finger on or near a touch surface. A typical capacitive sensor consists of a copper pad of proper dimensions etched on the surface of a PCB, where a nonconductive overlay serves as the touch surface for the button.

In a self-capacitance sensing system, the GPIO pin is connected to a sensor pad by traces and vias. Typically, a ground hatch (GND) surrounds the sensor pad to isolate it from other sensors and traces.

When a finger is present on the overlay, the conductive nature and large mass of the human body form a grounded, conductive plane parallel to the sensor pad, where a parallel plate capacitor is formed. The capacitance between the sensor pad and the finger is measured with this formula: CF=(Ɛ0ƐA)/d

PSOC™ converts the capacitance into equivalent digital counts called raw counts. Because a finger touch increases the total capacitance of the sensor pin, an increase in the raw counts indicates a finger touch.

CAPSENSE™ mutual-capacitive sensing

Mutual capacitance measures the capacitance between two electrodes: The transmit (Tx) and receive (Rx) electrodes. In a mutual-capacitive sensing system, a digital voltage signal switching between VDDIO or VDDD (if VDDIO is not supported in the device) and GND is applied to the Tx pin, and the amount of charge received on the Rx pin is measured. The amount of charge received on the Rx electrodes is directly proportional to the mutual capacitance (CM) between the two electrodes.

When a finger is placed between the Tx and Rx electrodes, CM decreases. Because of the reduction in CM, the charge received on the Rx electrodes also decreases. The capacitive-sensing system measures the amount of charge received on the Rx electrode to detect a touch/no-touch condition.

Getting started with CAPSENSE™ controllers
  • Buy the CY3280-MBR3 kit to evaluate the MBR3 solution’s features, including configurability, button performance, proximity sensing, and liquid tolerance
  • Download EZ-Click for free and easily design your CAPSENSE™ system
  • Read the application notes
  • Visit our touch-sensing information hub
CY3280-MBR3 CAPSENSE™ MBR3 Evaluation Kit

Infineon CAPSENSE™: Revolutionizing touch sensing™

Capacitive sensing for touch has changed the face of design in consumer and industrial products. Infineon CAPSENSE™ solutions bring elegant, reliable, and easy-to-use capacitive touch sensing functionality to your design via PSOC™ Creator’s CAPSENSE™ component, ModusToolbox™ CAPSENSE™ middleware, or our mechanical button replacement (MBR) portfolio. 

Our capacitive touch sensing solutions have replaced more than four billion mechanical buttons, and they enable hundreds of diverse types of sensing applications.

CAPSENSE™ offers industry-leading low-power operation with an average current consumption of 22 μA and the industry’s widest voltage ranges (1.71 V to 5.5 V). CAPSENSE™ also provides the industry’s best solution for liquid tolerance to prevent false touches in wet/moist environments.

Capacitive sigma delta (CSD) sensing and auto-tuning algorithms

Capacitive sigma delta (CSD) sensing algorithm

Infineon CAPSENSE™ technology consists of the capacitive sigma delta (CSD) sensing algorithm, which provides capacitive sensing using a switched capacitor technique with a delta-sigma modulator that converts the sensing current to a digital code. This patented algorithm provides high sensitivity to ensure accurate touch in noisy environments, industry-leading proximity distances, and allows for fast scan times.

Auto-tuning algorithms

Infineon has also developed auto-tuning algorithms, which provide robust noise immunity and adaptation to changing environments without the need for manual tuning. 

Mechanical button replacement (MBR) products

CAPSENSE™ MBR3

Infineon's solution for quickly and easily replacing mechanical buttons with sleek and reliable capacitive-sensing user interfaces.

CY8CMBR2110

I2C-configurable mechanical button replacement solution that supports up to 10 capacitive touch sensing channels that enable 10 buttons/10 LEDs.

CY8CMBR2044

CY8CMBR2044 solution supports up to four buttons and is quickly configured in hardware, eliminating the need for software tools, firmware development, and chip programming.

CY8CMBR2016

Creating a capacitive matrix keypad has never been simpler. Complete a matrix keypad design (up to 4x4) with CY8CMBR2016, a member of the CAPSENSE™ Express family.

CY8CMBR2010

Hardware-configurable mechanical button replacement solution that supports up to 10 capacitive touch sensing channels that enable 10 buttons/10 LEDs.

CAPSENSE™ Express

These entry-level series of CAPSENSE™ controllers enable you to integrate up to 16 GPIOs for sleek and trendy capacitive sensing solutions.

CAPSENSE™ self-capacitive sensing

CAPSENSE™ capacitive touch sensing technology measures the changes in the capacitance between a plate (the sensor) and its environment to detect the presence of a finger on or near a touch surface. A typical capacitive sensor consists of a copper pad of proper dimensions etched on the surface of a PCB, where a nonconductive overlay serves as the touch surface for the button.

In a self-capacitance sensing system, the GPIO pin is connected to a sensor pad by traces and vias. Typically, a ground hatch (GND) surrounds the sensor pad to isolate it from other sensors and traces.

When a finger is present on the overlay, the conductive nature and large mass of the human body form a grounded, conductive plane parallel to the sensor pad, where a parallel plate capacitor is formed. The capacitance between the sensor pad and the finger is measured with this formula: CF=(Ɛ0ƐA)/d

PSOC™ converts the capacitance into equivalent digital counts called raw counts. Because a finger touch increases the total capacitance of the sensor pin, an increase in the raw counts indicates a finger touch.

CAPSENSE™ mutual-capacitive sensing

Mutual capacitance measures the capacitance between two electrodes: The transmit (Tx) and receive (Rx) electrodes. In a mutual-capacitive sensing system, a digital voltage signal switching between VDDIO or VDDD (if VDDIO is not supported in the device) and GND is applied to the Tx pin, and the amount of charge received on the Rx pin is measured. The amount of charge received on the Rx electrodes is directly proportional to the mutual capacitance (CM) between the two electrodes.

When a finger is placed between the Tx and Rx electrodes, CM decreases. Because of the reduction in CM, the charge received on the Rx electrodes also decreases. The capacitive-sensing system measures the amount of charge received on the Rx electrode to detect a touch/no-touch condition.

Getting started with CAPSENSE™ controllers
  • Buy the CY3280-MBR3 kit to evaluate the MBR3 solution’s features, including configurability, button performance, proximity sensing, and liquid tolerance
  • Download EZ-Click for free and easily design your CAPSENSE™ system
  • Read the application notes
  • Visit our touch-sensing information hub
CY3280-MBR3 CAPSENSE™ MBR3 Evaluation Kit

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