GUI for evaluation module (EVM)
Data sheet
FDC2214
- EMI-resistant architecture
- Maximum output rates (one active channel):
- 13.3kSPS (FDC2112, FDC2114)
- 4.08kSPS (FDC2212, FDC2214)
- Maximum input capacitance: 250nF (at 10kHz with 1mH inductor)
- Sensor excitation frequency: 10kHz to 10MHz
- Number of channels: 2, 4
- Resolution: up to 28 bits
- System noise floor: 0.3fF at 100SPS
- Supply voltage: 2.7V to 3.6V
- Power consumption: active: 2.1mA
- Low-power sleep mode: 35µA
- Shutdown: 200nA
- Interface: I2C
- Temperature range: –40°C to +125°C
Capacitive sensing is a low-power, high-resolution contactless sensing technique that can be applied to a variety of applications ranging from proximity detection and gesture recognition to remote liquid level sensing. The sensor in a capacitive sensing system is any metal or conductor, allowing for a highly flexible system design.
The main challenge limiting sensitivity in capacitive sensing applications is noise susceptibility of the sensors. With the FDC2x1x resonant sensing architecture, performance can be maintained even in the presence of fluorescent light.
The FDC2x1x is a multi-channel family of 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 out of band noise while providing high resolution at high speed. The devices support a wide excitation frequency range, offering flexibility in system design. A wide frequency range is especially useful for reliable sensing of conductive liquids such as detergent, soap, and ink.
The FDC221x is optimized for high resolution, up to 28 bits, while the FDC211x offers a fast sample rate of up to 13.3kSPS for easy implementation of applications that use fast moving targets. The large maximum input capacitance of 250nF allows for the use of remote sensors, as well as for tracking environmental changes over time such as temperature and humidity.
The FDC2x1x family targets proximity sensing and liquid level sensing applications for any type of liquids. For non-conductive liquid level sensing applications in the presence of interferences such as human hands, the FDC1004 is recommended and features integrated active shield drivers.
Technical documentation
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View all 20 Design & development
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Evaluation board
FDC2214EVM — FDC2214 with Two Capacitive Sensors Evaluation Module
The FDC2214 evaluation module demonstrates capacitive sensing technology to detect the presence of a conductive or non-conductive target. The evaluation module includes two PCB capacitive sensors that connect to two of the four channels of the FDC2214. An MSP430 microcontroller is used to interface (...)
User guide: PDF
Evaluation board
FDC2214PROXSEN-EVM — FDC2214PROXSEN-EVM - Proximity and Capacitive Touch Sensing Evaluation Module
The FDC2214PROXSEN-EVM demonstrates capacitive proximity and touch button sensing with the use of TI's FDC221x capacitive sensing technology. The evaluation module is a complete hardware and firmware solution that integrates the 4-channel FDC2214, MSP430FR5969 and TPS61029 into one design. The (...)
User guide: PDF
Support software
SNOC033 — FDC211x/FDC221x Current Consumption Estimator
Supported products & hardware
Products
Signal conditioners
Reference designs
TIDA-00466 — Noise-immune Capacitive Proximity Sensor System Reference Design
The FDC2214 proximity and capacitive sensing design demonstrates the use of TI's capacitive sensing technology to sense and detect the presence of various objects. The design is a complete hardware and firmware solution. The firmware processes the data from one proximity sensor and two (...)
Schematic: PDF
Reference designs
TIDA-00464 — High Temperature Touch through Glass Reference Design
Human machine interface (HMI) is an essential part of process plants since it is one of the major ways through which humans and machines interact. This reference design offers an HMI solution for harsh and hazardous area applications. In process plants, operators need to interact with an (...)
Reference designs
TIDA-01465 — Capacitive Frost or Ice Detection Reference Design, Resolution of <1mm, Temperature Drift <0.25%
Frost and ice buildup on cooling bodies and evaporators can significantly decrease system energy efficiency in many appliance applications such as refrigerators, air conditioners, and freezers. This sensor reference design helps to achieve the more stringent energy efficiency requirements of (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WQFN (RGH) | 16 | Ultra Librarian |
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