To quantify the capacitance of a capacitive sensor, this paper adopts the same supply voltage (VDD) stable charging current and comparison threshold for both the local and external sensor relaxation ...

In this circuit the capacitors are replaced by touch sensors A and B, and the two 4.7-k resistors limit current in the IC’s protection diodes during an ESD event.

Creating capacitive touch-sensitive buttons is easy these days; many microcontrollers have cap-sense hardware built-in. This will work for simple on/off control, but what if you want a linear, posi… ...

Here is a simple capacitive touch switch circuit for electronics hobbyists. Even though the circuit uses smd components, construction of the touch sensor switch is not very hard because the whole ...

2. Lepkowski, J., and Young, C., AND8054: Designing RC Oscillator Circuits with Low Voltage Operational Amplifiers and Comparators for Precision Sensor Applications, ON Semiconductor, 2001.

Figure 3 shows the block diagram of a capacitive touch sensing pre-processing circuit. Feedback Mechanisms Adding feedback mechanisms to your user interface differentiates your end product and makes ...

The new high-performance LC717A00AR, which is the first in a series of ON Semiconductor touch sensor integrated circuits, simplifies the replacement of mechanical switches with capacitive touch ...

Capacitive touch sensing allows for triggering the sensor without actually physically touching one’s lips to the electrodes, which [Nathan] did by putting a clear plastic layer over the PCB traces.

This paper proposes an in-cell capacitive touch panel structure and a readout circuit (ROIC) to sense the variation in self-capacitance using a small number of sensing lines. The proposed touch panel ...