Capacitive sensing is a low-power, low-cost, high-resolution contactless sensing technique that can be applied to a variety of applications ranging from proximity detection to gesture recognition. The sensor in a capacitive sensing system is any metal or conductor, allowing for low cost and highly flexible system design.
The main challenge limiting sensitivity in capacitive sensing applications is noise susceptibility of the sensors. With the FDC2x1x-Q1 innovative EMI resistant architecture, performance can be maintained even in presence of high-noise environments.
The FDC2x1x-Q1 is a multi-channel family of noise- and EMI-resistant, high-resolution, high-speed capacitance-to-digital converters for implementing capacitive sensing solutions. The devices employ an innovative narrow-band based architecture to offer high rejection of noise and interferers while providing high resolution at high speed. The devices support a wide excitation frequency range, offering flexibility in system design.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | FDC2112-Q1, FDC2114-Q1, FDC2212-Q1, FDC2214-Q1 Multi-Channel 12-Bit or 28-Bit Capacitance-to-Digital Converter (FDC) for Capacitive Sensing datasheet | PDF | HTML | 05 May 2016 |
| Application note | Common Inductive and Capacitive Sensing Applications (Rev. B) | PDF | HTML | 22 Jun 2021 | |
| Application note | Simulate Inductive Sensors Using FEMM (Finite Element Method Magnetics) (Rev. A) | PDF | HTML | 16 Jun 2021 | |
| Application note | Capacitive Proximity Sensing Using FDC2x1y (Rev. A) | 20 Oct 2017 | ||
| EVM User's guide | FDC2114 and FDC2214 EVM User’s Guide (Rev. A) | 14 Sep 2016 | ||
| Application note | Ground Shifting in Capacitive Sensing Applications | PDF | HTML | 27 May 2016 | |
| Application note | Power Consumption Analysis for Low Power Capacitive Sensing Applications | PDF | HTML | 18 Jan 2016 | |
| Application note | Derivative Integration Algorithm for Proximity Sensing | 29 Sep 2015 | ||
| Application note | Capacitive Sensing: Direct vs Remote Liquid Level Sensing Performance Analysis (Rev. A) | 24 Jul 2015 |
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