LDC0851
- Functional Safety-Capable
- Threshold tolerance: <1 % of coil diameter
- Temperature stable switching operation
- Average supply current: < 20µA at 10sps
- Shutdown supply current: 140nA
- Push-pull output
- Resistor programmable threshold
- Insensitive to DC magnetic fields
- Contactless switching operation
- Sample rate up to 4ksps
- Supply voltage: 1.8V – 3.3V
- Operating temperature range: –40 to 125 °C
The LDC0851 is a close range inductive switch ideal for contactless, simple switch applications such as presence detection and event counting.
The switch is triggered when a conductive object comes within close proximity of the sensing coil. Hysteresis is included to ensure a reliable switching threshold. The differential implementation prevents false triggering over environmental factors such as temperature variation or humidity effects. The LDC0851 does not require an MCU to operate, allowing for a simplistic solution.
Inductive sensing technology provides reliable and accurate sensing even in the presence of dirt, oil, or moisture making it ideal for use in harsh or dirty environments. The solid state switching eliminates the failures due to reed, mechanical, or contact switching. Unlike competitive products, the LDC0851 does not require magnets, nor is it affected by DC magnetic fields.
技術文件
設計與開發
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LDC0851EVM — LDC0851EVM - 具有堆疊線圈的高準確度電感式開關評估模組
LDC0851 評估模組展現電感感測技術，可精確偵測傳導性目標通過固定閾值。評估模組包含有穿孔和可互換的 4 層 PCB，其中含堆疊感測線圈及參考線圈以減少系統尺寸。有傳導性物體通過固定閾值時會以綠色 LED 指示，因此不需要 MCU 或 GUI。調整電阻電位計以輕鬆切換閾值，提供靈活性並加快系統原型設計速度。
評估步驟
步驟 1：購買 LDC0851EVM
步驟 2：下載 LDC0851EVM 使用者指南與快速入門指南
步驟 3：下載並檢視其他建議內容
- 用於識別並修正常見設定問題的 LDC0851 故障排除指南
- 透過堆疊線圈設計注意事項應用手冊，了解如何設計空間最佳化的感測器
- LDC (...)
LDC-CALCULATOR-TOOLS — Inductive Sensing Design Calculator Tool
電感感測計算機工具提供兩份 Excel 試算表，協助電感轉數位轉換器 (LDC) 裝置的設計流程。這些工具可提供線圈設計協助，以及一些裝置特有的設定。
TIDA-00828 — 使用 LDC0851 的 32 位編碼器旋鈕參考設計
TIDA-00851-LDC0851 — LDC0851 事件計數參考設計
TIDA-01377 — 使用感應式感測的外殼篡改偵測參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DSG) | 8 | Ultra Librarian |
訂購與品質
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。