Touchless control of kitchen appliances
This design demonstrates a kitchen range hood that utilizes Renesas’ capacitive touch sensing technology (CTSU) for touchless control. The RA2 MCU series provides a complete solution in a single chip thanks to the integrated 16-bit SAR ADC, 24-bit sigma-delta ADC, touch control, and lower power performance. Additionally, the combination of high performance power and analog systems from Renesas’ LDOs, op amps and triacs can be utilized in other home appliances (washing machines, IH cooking heaters) that require touch panel functionality.
System benefits:
- Built-in high-touch sensitivity CTSU to support touch key and 2D gesture input. Improved noise immunity, sensitivity and water resistance is an ideal match for consumer electronics products that are used in wet environments, such as the kitchen or bathroom.
- High-performance LDO, op amps and triacs provide a full solution
Recommended products
| Products | Description | Documents |
|---|---|---|
| Microcontroller | ||
| RA2A1 | 48MHz Arm® Cortex®-M23 core with integration of a 24-bit sigma-delta ADC | Datasheet |
| Op Amp | ||
| ISL28130 | Single micropower, low drift, RRIO operational amplifier | Datasheet |
| Triac | ||
| BCR8LM-12LA | Guaranteed junction temperature (Tj) of 150 °C and are provided in a variety of packages, ideal for white goods and home appliances | Datasheet |
| LDO | ||
| ISL9007 | High current LDO with low IQ and high PSRR | Datasheet |
System block diagram
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