FDC2212
- 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.
기술 자료
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
FDC2214EVM — 2개의 커패시티브 센서 평가 모듈이 포함된 FDC2214
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 (...)
TIDA-00466 — 잡음에 내성을 가진 정전식 근접 센서 시스템 레퍼런스 디자인
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 (...)
TIDA-00754 — 주변광 및 노이즈 내성 근접 센서를 사용한 스마트 조명 및 백라이트 제어 레퍼런스 디자인
이 레퍼런스 설계는 HMI 애플리케이션을 위한 근접 센서 구현을 보여줍니다. 이 설계는 환경 주변광 수준에 따라 LCD 백라이트 밝기를 동적으로 조정하는 백라이트 제어에 사용할 수 있습니다. 정전식 근접 센서는 사람이 접근할 때 시스템을 절전 또는 대기 모드에서 활성화하여 전원을 절약하고 LCD 백라이트의 수명을 늘립니다.
TIDA-01364 — 백색 LED 드라이버, 주변광 및 근접 센서를 사용한 스마트 백라이트 제어 레퍼런스 디자인
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WSON (DNT) | 12 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.