4-Ch, 28-bit, capacitance to digital converter
Product details
Parameters
We are not able to display this information. Please refer to the product data sheet.Package | Pins | Size
Features
- EMI-Resistant Architecture
- Maximum Output Rates (one active channel):
- 13.3 ksps (FDC2112, FDC2114)
- 4.08 ksps (FDC2212, FDC2214)
- Maximum Input Capacitance: 250 nF (at 10 kHz
with 1 mH inductor) - Sensor Excitation Frequency: 10 kHz to 10 MHz
- Number of channels: 2, 4
- Resolution: up to 28 bits
- System Noise Floor: 0.3 fF at 100 sps
- Supply Voltage: 2.7 V to 3.6 V
- Power Consumption: Active: 2.1 mA
- Low-Power Sleep Mode: 35 µA
- Shutdown: 200 nA
- Interface: I2C
- Temperature range: –40°C to +125°C
Description
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 and gesture recognition to remote liquid level sensing. 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 innovative EMI resistant architecture, performance can be maintained even in presence of high-noise environments.
The FDC2x1x 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. 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 fast sample rate, up to 13.3ksps, for easy implementation of applications that use fast moving targets. The very large maximum input capacitance of 250 nF allows for the use of remote sensors, as well as for tracking environmental changes over time, 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, which has integrated active shield drivers.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
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 (...)
Features
- Multiple board perforations: provide maximum evaluation and system design flexibility
- Includes two sample PCB capacitive sensors for two of the four channels
- Accompnaying GUI for quick concept demonstration and data capture
- EVM does not require additional components for operation
Description
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 (...)
Features
- Demonstrates proximity and cap touch capabilities
- Adaptive processing algorithm integrated in the firmware
- JTAG connection available for debugging
- Battery operated from one AA-battery (not included)
- Firmware included
Software development
Design tools & simulation
Reference designs
Design files
-
download TIDA-00466 BOM.pdf (280KB) -
download TIDA-00466 Assembly Drawing.pdf (204KB) -
download TIDA-00466 PCB.pdf (843KB) -
download TIDA-00466 CAD Files.zip (960KB) -
download TIDA-00466 Gerber.zip (404KB)
Design files
-
download TIDA-00464 BOM.pdf (51KB) -
download TIDA-00464 Assembly Drawing .pdf (95KB) -
download TIDA-00464 PCB.pdf (496KB) -
download TIDA-00464 CAD Files .zip (479KB) -
download TIDA-00464 Gerber.zip (346KB)
Design files
-
download TIDA-01465 BOM.pdf (33KB) -
download TIDA-01465 Assembly Drawing.pdf (184KB) -
download TIDA-01465 PCB.pdf (672KB) -
download TIDA-01465 CAD Files.zip (1008KB) -
download TIDA-01465 Gerber (Rev. A).zip (2141KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WQFN (RGH) | 16 | View options |
Ordering & quality
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- Ongoing reliability monitoring
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