AD7142
Analog Devices
The AD7142 capacitance sensor solution consists of a sensor board equipped with the AD7142 device, including the capacitance sensors.
Application NoteAnalog
Introduction to AD7142 Host Software Requirements
This application note outlines the host processor software requirements for the AD7142 capacitance sensor, including serial interfaces and positional algorithms.
Overview
This document describes the software requirements for a host processor to support the AD7142 capacitance sensor interface. It details the necessary serial interface (I2C or SPI) for device configuration and interrupt status monitoring. The note covers specific software needs for various sensor types including buttons, 8-way switches, keypads, touchpads, scroll wheels, and linear sliders. It specifies the need for recalibration and RF interference algorithms, as well as memory requirements for positional algorithms used in scroll wheel and slider applications.
Use Cases
- Capacitive touch buttons
- 8-way switch interfaces
- Scroll wheel navigation controls
- Linear slider input devices
- Keypad and touchpad design
Topics
AD7142
capacitance sensor
host software
I2C
SPI
recalibration algorithm
positional algorithm
scroll wheel
linear slider
RF interference
Referenced Parts
| AD7142 | Analog Devices | The AD7142 capacitance sensor solution consists of a sensor board equipped with the AD7142 device, including the capacitance sensors. |