MGC3140 datasheet(10/49 Pages) MICROCHIP

10 / 49 page

Figure 3-2. Equipotential Lines of a Distorted E-Field

3.1

GestIC Technology Benefits

•

GestIC E-field sensors are not impacted by ambient influences such as light or sound, which have

a negative impact to the majority of other 3D technologies.

•

GestIC technology allows gesture/position tracking processing on-chip – no host processing

needed. Algorithms are included in the Colibri Gesture Suite which runs on-chip and is provided by

Microchip.

•

The GestIC technology has a high immunity to noise, provides high update rates and resolution,

low latency and is also not affected by clothing, surface texture or reflectivity.

•

Five carrier frequencies of 42, 43, 44, 45 and 100 kHz are utilized by the GestIC with minimal

impact on the regulated radio frequency range.

•

Usage of thin low-cost materials as electrodes allow low system cost at slim Industrial designs.

•

The further use of existing capacitive sensor structures, such as a touch panel’s ITO coating, allows

additional cost savings and ease the integration of the technology.

•

Electrodes are invisible to the user’s eye since they are implemented underneath the housing

surface or integrated into a touch panel’s ITO structure.

•

GestIC works centrically over the full sensing space. Thus, it provides full surface coverage without

any detection blind spots.

•

Only one GestIC transmitter electrode is used for E-field generations. The benefit is an overall low

power consumption and low radiated EMC noise.

•

Since GestIC is basically processing raw electrode signals and computes them in real time into

preprocessed gestures and x, y, z positional data, it provides a highly-flexible user interface

technology for any kind of electronic devices.

MGC3140

Theory of Operation: Electrical Near-Field (E-Fiel...

DS40002037A-page 10

MGC3140 Datasheet(PDF) 10 Page - Microchip Technology