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電感式感測器 AFE

LDC2114

現行

適用於低功耗觸控按鈕且具有基準追蹤功能的 4 通道電感轉數位轉換器

立即訂購
產品規格表

LDC2114

現行
產品規格表 立即訂購

產品詳細資料

Applications Inductive touch buttons Number of input channels 4 Vs (max) (V) 1.89 Vs (min) (V) 1.71 Rating Catalog Operating temperature range (°C) -40 to 85
Applications Inductive touch buttons Number of input channels 4 Vs (max) (V) 1.89 Vs (min) (V) 1.71 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFD) 16 3.24 mm² 1.8 x 1.8 TSSOP (PW) 16 32 mm² 5 x 6.4
  • Low Power Consumption:
    • One Button: 6 µA at 0.625 SPS
    • Two Buttons: 72 µA at 20 SPS
  • Configurable Button Scan Rates:
    • 0.625 SPS to 80 SPS
  • Force Level Measurement of Touch Buttons
  • Independent Channel Operation:
    • Two Channels for LDC2112
    • Four Channels for LDC2114
  • Integrated Algorithms to Enable:
    • Adjustable Force Threshold per Button
    • Environmental Shift Compensation
    • Simultaneous Button Press Detection
  • Supports Independent Operation without MCU
  • Robust EMI Performance:
    • Allows for CISPR 22 and CISPR 24 Compliance
  • Operating Voltage Range: 1.8 V ± 5%
  • Temperature Range: –40 °C to +85 °C
  • Interface:
    • I2C
    • Dedicated Logic Output per Channel
  • Low Power Consumption:
    • One Button: 6 µA at 0.625 SPS
    • Two Buttons: 72 µA at 20 SPS
  • Configurable Button Scan Rates:
    • 0.625 SPS to 80 SPS
  • Force Level Measurement of Touch Buttons
  • Independent Channel Operation:
    • Two Channels for LDC2112
    • Four Channels for LDC2114
  • Integrated Algorithms to Enable:
    • Adjustable Force Threshold per Button
    • Environmental Shift Compensation
    • Simultaneous Button Press Detection
  • Supports Independent Operation without MCU
  • Robust EMI Performance:
    • Allows for CISPR 22 and CISPR 24 Compliance
  • Operating Voltage Range: 1.8 V ± 5%
  • Temperature Range: –40 °C to +85 °C
  • Interface:
    • I2C
    • Dedicated Logic Output per Channel

Inductive sensing technology enables touch button design for human machine interface (HMI) on a wide variety of materials such as metal, glass, plastic, and wood, by measuring small deflections of conductive targets. The sensor for an inductive touch system is a coil that can be implemented on a small PCB located behind the panel and protected from the environment. Inductive sensing solution is insensitive to humidity or non-conductive contaminants such as oil and dirt. It is able to automatically correct for any deformation in the conductive targets.

The LDC2112/LDC2114 is a multi-channel low-noise inductance to digital converter with integrated algorithms to implement inductive touch applications. The device employs an innovative LC resonator that offers high rejection of noise and interference. The LDC2112/LDC2114 can reliably detect material deflections of less than 200 nm.

The LDC2112/LDC2114 includes an ultra-low power mode intended for power on/off buttons in battery powered applications.

The LDC2112/LDC2114 is available in a 16-pin DSBGA or TSSOP package. The 0.4 mm pitch DSBGA package has a very small 1.6 × 1.6 mm nominal body size with a maximum height of 0.4 mm. The 0.65 mm pitch TSSOP package has a 5.0 × 4.4 mm nominal body size with a maximum height of 1.2 mm.

Inductive sensing technology enables touch button design for human machine interface (HMI) on a wide variety of materials such as metal, glass, plastic, and wood, by measuring small deflections of conductive targets. The sensor for an inductive touch system is a coil that can be implemented on a small PCB located behind the panel and protected from the environment. Inductive sensing solution is insensitive to humidity or non-conductive contaminants such as oil and dirt. It is able to automatically correct for any deformation in the conductive targets.

The LDC2112/LDC2114 is a multi-channel low-noise inductance to digital converter with integrated algorithms to implement inductive touch applications. The device employs an innovative LC resonator that offers high rejection of noise and interference. The LDC2112/LDC2114 can reliably detect material deflections of less than 200 nm.

The LDC2112/LDC2114 includes an ultra-low power mode intended for power on/off buttons in battery powered applications.

The LDC2112/LDC2114 is available in a 16-pin DSBGA or TSSOP package. The 0.4 mm pitch DSBGA package has a very small 1.6 × 1.6 mm nominal body size with a maximum height of 0.4 mm. The 0.65 mm pitch TSSOP package has a 5.0 × 4.4 mm nominal body size with a maximum height of 1.2 mm.

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類型 標題 日期
* Data sheet LDC2112, LDC2114 Inductive Touch Solution for Low-Power HMI Button Applications datasheet (Rev. B) PDF | HTML 2017年 4月 4日
Application note Inductive Touch System Design Guide for HMI Button Applications (Rev. A) PDF | HTML 2023年 2月 13日
Application note Design Considerations for Inductive Touch Buttons for Human-to-Machine Interface (Rev. B) PDF | HTML 2022年 4月 12日
Application note Replacing Mechanical Switches With Inductive Sensors PDF | HTML 2022年 4月 8日
Application note Inductive Touch – Configuring LDC2114 and LDC3114 Touch-Button Sensitivity (Rev. B) PDF | HTML 2021年 7月 28日
Application note LDC211x and LDC3114 Internal Algorithm Functionality (Rev. A) PDF | HTML 2021年 7月 1日
Application note Common Inductive and Capacitive Sensing Applications (Rev. B) PDF | HTML 2021年 6月 22日
Application brief Inductive Touch Buttons for Wearables (Rev. A) PDF | HTML 2021年 6月 22日
Application note Simulate Inductive Sensors Using FEMM (Finite Element Method Magnetics) (Rev. A) PDF | HTML 2021年 6月 16日
Application note LDC Device Selection Guide (Rev. D) PDF | HTML 2021年 6月 15日
Application note Sensor Design for Inductive Sensing Applications Using LDC (Rev. C) PDF | HTML 2021年 5月 21日
Application note LDC Target Design (Rev. B) PDF | HTML 2021年 5月 13日
Technical article Selecting an airtight approach to water and dust proof buttons PDF | HTML 2018年 7月 19日
Application note Resonance-Based Capacitive Sensing Using LDC2114 2017年 9月 20日
EVM User's guide Inductive Touch Coil EVM (INx+COM) (Rev. A) 2017年 7月 28日
Application note EMI Considerations for Inductive Sensing 2017年 2月 22日
User guide LDC2114 Evaluation Module for Inductive Touch Inductance to Digital Converter 2016年 12月 14日
Technical article How to use the LDC calculations tool PDF | HTML 2016年 11月 10日
Technical article Inductive sensing: target size matters PDF | HTML 2015年 11月 16日
Application note Measuring Rp of an L-C Sensor for Inductive Sensing 2015年 10月 1日
Technical article Inductive sensing: Meet the new multichannel LDCs PDF | HTML 2015年 4月 27日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LDC2114EVM — LDC2114 1.8V 四通道電感式觸控評估模組

The LDC2114EVM (Evaluation Module) demonstrates the use of inductive sensing to detect a button press on a monolithic piece of metal.  The EVM can connect up to 4 buttons using the LDCTOUCHCOMCOILEVM or customized coils designed through Webench.  Button presses & levels of pressure (...)
使用指南: PDF
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開發板

LDCTOUCHCOMCOILEVM — 感應式觸控感測器線圈評估板

The LDCTOUCHCOMCOILEVM is designed to provide maximum flexibility for system prototyping in inductive touch applications and allows experimentation with different coil sizes.  It includes 5 sets of different sized PCB coils with integrated spacers & perforations such that the coils can be (...)
使用指南: PDF
TI.com 無法提供
模擬型號

LDC2114 IBIS Model

SNOM611.ZIP (26 KB) - IBIS Model
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YFD) 16 Ultra Librarian
TSSOP (PW) 16 Ultra Librarian
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