STEVAL-IFS012V2

The STEVAL-IFS012V2 is a ready-to-use digital capacitance-to-digital converter (CDC) board featuring the STMPE1701 integrated circuit. The board is suitable for measuring the capacitance of a variety of different electrode types. It provides an easy way to test CDC with 2-channel operation, and a graphical user interface enables it to be used for various applications.

The STEVAL-IFS012V2 board also has 8 analog inputs and an on-board voltage reference to allow users to measure a variety of environmental parameters such as pressure, humidity, gas composition and air temperature. The board can be connected to a PC via a USB interface and includes a Graphical User Interface (GUI) to display on-screen results.

The STEVAL-IFS012V2 is powered by a 3V coin cell power source and has a standby current of only 10μA. It also supports up to 15 repeatable digital channels with different thresholds, enabling it to make various measurements with very high accuracy. Furthermore, the board houses an on-board temperature sensor which can be used to measure the temperature of the board and the surrounding environment.

The STEVAL-IFS012V2 is a compact and user-friendly device for capacitive sensing applications. It features a set of three LEDs for visual feedback when used, as well as on-board and off-board temperature sensing and capacitance measurements as well as a graphical user interface (GUI) for data display.

The main application field for STEVAL-IFS012V2 is capacitive sensing. This board can be used to measure the capacitance of a variety of different materials, including the human body. The two-channel operation enables the user to measure capacitive values on two different electrodes at the same time. The board also has 8 analog inputs and an on-board voltage reference, allowing for the simultaneous measurement of various environmental parameters such as pressure, humidity, gas composition, and air temperature. The on-board temperature sensor can also be used to get an accurate temperature reading of the board and its external environment.

The working principle of the STEVAL-IFS012V2 is based on the principle of charge transfer. When the membrane capacitor changes in size, due to the application of an external force, it causes an electrostatic charge to be transferred from one side of the capacitor to the other. This transfer in charge is then measured by the integrated circuit and converted to an analog voltage signal. This signal is then converted into a digital signal which is sent to the computer, where it can be displayed on the Graphical User Interface.

In summary, the STEVAL-IFS012V2 is a high-performance digital capacitance-to-digital converter (CDC) board for capacitive sensing applications. It features two channels for measuring capacitance values on two different electrodes, 8 analog inputs, an on-board voltage reference, a temperature sensor, and a graphical user interface (GUI) for data display. This board is ideal for measuring capacitance values and environmental parameters in a variety of different applications.