LDC2112

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2-kanaliger Induktivität-Digital-Wandler mit Baseline-Tracking für Touch-Tasten mit geringem Stromve

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Datenblatt

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

LDC2112

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Applications

Inductive touch buttons

Number of input channels

2

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

2

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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	Typ	Titel		Datum
*	Data sheet	LDC2112, LDC2114 Inductive Touch Solution for Low-Power HMI Button Applications datasheet (Rev. B)	PDF \| HTML	04 Apr 2017
	Application note	Inductive Touch System Design Guide for HMI Button Applications (Rev. A)	PDF \| HTML	13 Feb 2023
	Application note	Design Considerations for Inductive Touch Buttons for Human-to-Machine Interface (Rev. B)	PDF \| HTML	12 Apr 2022
	Application note	Inductive Touch – Configuring LDC2114 and LDC3114 Touch-Button Sensitivity (Rev. B)	PDF \| HTML	28 Jul 2021
	Application note	LDC211x and LDC3114 Internal Algorithm Functionality (Rev. A)	PDF \| HTML	01 Jul 2021
	Application note	Common Inductive and Capacitive Sensing Applications (Rev. B)	PDF \| HTML	22 Jun 2021
	Application brief	Inductive Touch Buttons for Wearables (Rev. A)	PDF \| HTML	22 Jun 2021
	Application note	Simulate Inductive Sensors Using FEMM (Finite Element Method Magnetics) (Rev. A)	PDF \| HTML	16 Jun 2021
	Application note	LDC Device Selection Guide (Rev. D)	PDF \| HTML	15 Jun 2021
	Application note	Sensor Design for Inductive Sensing Applications Using LDC (Rev. C)	PDF \| HTML	21 Mai 2021
	Application note	LDC Target Design (Rev. B)	PDF \| HTML	13 Mai 2021
	EVM User's guide	Inductive Touch Coil EVM (INx+COM) (Rev. A)		28 Jul 2017
	Application note	EMI Considerations for Inductive Sensing		22 Feb 2017
	User guide	LDC2114 Evaluation Module for Inductive Touch Inductance to Digital Converter		14 Dez 2016
	Technical article	How to use the LDC calculations tool	PDF \| HTML	10 Nov 2016
	Technical article	Inductive sensing: target size matters	PDF \| HTML	16 Nov 2015
	Application note	Measuring Rp of an L-C Sensor for Inductive Sensing		01 Okt 2015
	Technical article	Inductive sensing: Meet the new multichannel LDCs	PDF \| HTML	27 Apr 2015

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LDC2114EVM — LDC2114 1.8V 4-Kanal Induktiver Touch – Evaluierungsmodul

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 (...)

Benutzerhandbuch: PDF

Nicht verfügbar auf TI.com

Evaluierungsplatine

LDCTOUCHCOMCOILEVM — Induktive Berührungssensorspule – Evaluierungsplatine

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 (...)

Benutzerhandbuch: PDF

Nicht verfügbar auf TI.com

GUI für Evaluierungsmodul (EVM)

SNOC028 — Sensing Solutions EVM GUI Tool v1.10.0

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FDC2112-Q1 — 2-kanaliger Kapazitäts-Digital-Wandler, 12 Bit, für die Automobilindustrie

FDC2114 — 4-kanaliger Kapazitäts-Digital-Wandler, 12 Bit

FDC2114-Q1 — 4-kanaliger Kapazitäts-Digital-Wandler, 12 Bit, für die Automobilindustrie

FDC2212 — 2-kanaliger Kapazitäts-Digital-Wandler, 28 Bit

FDC2212-Q1 — 2-kanaliger Kapazitäts-Digital-Wandler, 28 Bit, für die Automobilindustrie

FDC2214 — 4-kanaliger Kapazitäts-Digital-Wandler, 28 Bit

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FDC2214EVM — Evaluierungsmodul für FDC2214 mit zwei kapazitiven Sensoren

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HDC2080EVM — HDC2080 – energieeffizienter Luftfeuchtigkeits- und Temperatursensor – Evaluierungsmodul

LDC1000EVM — LDC1000EVM - Evaluierungsmodul für Induktivität-Digital-Wandler mit PCB-Spulenmuster

LDC1312EVM — LDC1312 Evaluierungsmodul für Inductance-to-Digital Converter mit PCB-Spulenmustern

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LDC1614EVM — LDC1614 Evaluierungsmodul für Inductance-to-Digital Converter mit PCB-Spulenmustern

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Simulationsmodell

LDC2112 IBIS Model

SNOM612.ZIP (27 KB) - IBIS Model

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Berechnungstool

LDC-CALCULATOR-TOOLS — Inductive Sensing Design Calculator Tool

The inductive sensing calculator tools provide two Excel spreadsheets to assist in the design process for inductive-to-digital converter (LDC) devices. These tools provide coil design assistance as well as some device-specific configurations.

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