LDC2112

現行

具低功耗觸摸按鈕基線跟蹤功能的 2 通道數位電感至數位轉換器

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產品規格表

document-pdfAcrobat LDC2112, LDC2114 Inductive Touch Solution for Low-Power HMI Button Applications datasheet (Rev. B) (英文) PDF | HTML

LDC2112

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

Rating

Catalog

Vs (max) (V)

1.89

Vs (min) (V)

1.71

Operating temperature range (°C)

-40 to 85

Applications

Inductive touch buttons

Number of input channels

Rating

Catalog

Vs (max) (V)

1.89

Vs (min) (V)

1.71

Operating temperature range (°C)

-40 to 85

DSBGA (YFD)

3.24 mm² (0 mm × 0 mm)

TSSOP (PW)

32 mm² (5 mm × 6.4 mm)

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.

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

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重要文件	類型	標題	格式選項	日期
*	資料表	LDC2112, LDC2114 Inductive Touch Solution for Low-Power HMI Button Applications datasheet (Rev. B)	PDF \| HTML	2017/4/4
	應用說明	Inductive Touch System Design Guide for HMI Button Applications (Rev. A)	PDF \| HTML	2023/2/13
	應用說明	Design Considerations for Inductive Touch Buttons for Human-to-Machine Interface (Rev. B)	PDF \| HTML	2022/4/12
	應用說明	Inductive Touch – Configuring LDC2114 and LDC3114 Touch-Button Sensitivity (Rev. B)	PDF \| HTML	2021/7/28
	應用說明	LDC211x and LDC3114 Internal Algorithm Functionality (Rev. A)	PDF \| HTML	2021/7/1
	應用說明	Common Inductive and Capacitive Sensing Applications (Rev. B)	PDF \| HTML	2021/6/22
	Application brief	Inductive Touch Buttons for Wearables (Rev. A)	PDF \| HTML	2021/6/22
	應用說明	Simulate Inductive Sensors Using FEMM (Finite Element Method Magnetics) (Rev. A)	PDF \| HTML	2021/6/16
	應用說明	LDC Device Selection Guide (Rev. D)	PDF \| HTML	2021/6/15
	應用說明	Sensor Design for Inductive Sensing Applications Using LDC (Rev. C)	PDF \| HTML	2021/5/21
	應用說明	LDC Target Design (Rev. B)	PDF \| HTML	2021/5/13
	應用說明	EMI Considerations for Inductive Sensing		2017/2/22
	使用指南	LDC2114 Evaluation Module for Inductive Touch Inductance to Digital Converter		2016/12/14
	技術文章	How to use the LDC calculations tool	PDF \| HTML	2016/11/10
	技術文章	Inductive sensing: target size matters	PDF \| HTML	2015/11/16
	應用說明	Measuring Rp of an L-C Sensor for Inductive Sensing		2015/10/1
	技術文章	Inductive sensing: Meet the new multichannel LDCs	PDF \| HTML	2015/4/27

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開發板

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

LDC2114EVM（評估模組）示範如何使用電感感測偵測單體金屬片上的按鈕按壓情況。該 EVM 可使用 LDCTOUCHCOMCOILEVM 或透過 Webench 設計的自訂線圈連接多達 4 個按鈕。按鈕按壓和壓力等級由板載 LED 指示。裝置也可在不同工作週期進行配置，以降低功耗。

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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