Proximity Switch With CapTIvate Teach Button Reference Design
Description
This reference design demonstrates the implementation of a capacitive touch button using an MSP430™ MCU with CapTIvate™ technology in an ultra-small 3.5-mm width PCB. This button is commonly used as a set button in proximity switches. In combination with the highly integrated IO-Link PHY: a flexible output: either PNP or NPN: is realized. This SIO stage protects against reverse polarity: ESD: EFT: and surge: allowing the design to meet IEC 61000-4 standards. The Hall sensor with an analog output signal enables flexible usage by touching the distance of the magnetic object with the capacitive touch button. The analog signal is captured by the integrated ADC of the MCU.
Features
- Capacitive Touch Button With CapTIvate Technology:Support for Touch Through Metal and Water Rejection DesignsSelf and Mutual Capacitance ElectrodesEnables Increased immunity to Power Line: RF: and Other Environmental NoiseHighly Integrated Output Driver:NPN: PNP: IO-Link (Optional)3.3-V or 5.0-V LDO; 20 mAReverse Polarity ProtectionESD: EFT: and Surge Protection According to IEC 61000-450- to 350-mA Configurable Output Current Limit3.5mm width PCB
Applications
- Actuator
- Electronic & robotic toys
- Laser distance meter
- Position sensor
- Proximity switch
Product Categories
- Arm-based microcontrollers