SNVC187 — Capacitive Sensing Sample Code (Energia) v1.1
支援產品和硬體
產品
訊號調節器
- FDC1004 — 具 EMC 保護主動屏蔽式驅動器的 4 通道 16 位元電容至數位轉換器
硬體開發
開發板
- FDC1004EVM — FDC1004EVM - 四通道電容轉數位轉換器評估模組
- FDC1004QEVM — 汽車 4 通道電容轉數位轉換器評估模組
Capacitive sensing with grounded capacitor sensors is a very low-power, low-cost, high-resolution contact-less sensing technique that can be applied to a variety of applications ranging from proximity sensing and gesture recognition to material analysis and 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 FDC1004 is a high-resolution, 4-channel capacitance-to-digital converter for implementing capacitive sensing solutions. Each channel has a full scale range of ±15pF and can handle a sensor offset capacitance of up to 100pF, which can be either programmed internally or can be an external capacitor for tracking environmental changes over time and temperature. The large offset capacitance capability allows for the use of remote sensors.
The FDC1004 also includes shield drivers for sensor shields, which can reduce EMI interference and help focus the sensing direction of a capacitive sensor. The small footprint of the FDC1004 allows for use in space-constrained applications. The FDC1004 is available in a 10-pin WSON and VSSOP package and features an I2C interface for interfacing to an MCU.
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FDC1004 評估模組 (EVM) 是用於評估 FDC1004 4 通道電容轉數位轉換器的平台。此評估模組採用由三個部分組成的可斷開 PCB:以 MSP430F5528 微控制器為基礎的 USB 轉 I²C 轉換器,以及兩個展示 FDC1004 靈敏度的感測器電極。此感測器可移除並替換為針對您特定應用設計的自訂感測器,評估模組的 GUI 可用於設定 FDC1004 暫存器,並以四張獨立圖表顯示測量的電容值。
評估步驟
步驟 1:購買 FDC1004EVM
步驟 2:下載 FDC1004EVM 使用指南與感測解決方案 GUI
步驟 3:下載並檢視其他建議內容
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSSOP (DGS) | 10 | Ultra Librarian |
| WSON (DSC) | 10 | Ultra Librarian |
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。