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LDC1041

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1-Ch, 5V, 24-bit L, 8-bit Rp, inductance to digital converter

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Data sheet

LDC1041

ACTIVE
Data sheet Order now

Product details

Number of input channels 1 Rating Catalog Operating temperature range (°C) -40 to 125
Number of input channels 1 Rating Catalog Operating temperature range (°C) -40 to 125
WSON (NHR) 16 20 mm² 5 x 4
  • Remote sensor placement (decoupling the LDC from
    harsh environments)
  • High durability (by virtue of contactless operation)
  • Higher flexibility for system design (using coils or
    springs as sensors)
  • Insensitive to non-conductive environmental interferers
    (such as dirt, dust, oil etc.)
  • Magnet-free operation
  • Sub-micron precision
  • Supply Voltage: 5 V, typ
  • Supply voltage, IO: 1.8V to 5.5V
  • Stand-by current: 250µA, typ
  • Rp resolution: 8-bit
  • L resolution: 24-bit
  • LC frequency range: 5kHz to 5MHz
  • Remote sensor placement (decoupling the LDC from
    harsh environments)
  • High durability (by virtue of contactless operation)
  • Higher flexibility for system design (using coils or
    springs as sensors)
  • Insensitive to non-conductive environmental interferers
    (such as dirt, dust, oil etc.)
  • Magnet-free operation
  • Sub-micron precision
  • Supply Voltage: 5 V, typ
  • Supply voltage, IO: 1.8V to 5.5V
  • Stand-by current: 250µA, typ
  • Rp resolution: 8-bit
  • L resolution: 24-bit
  • LC frequency range: 5kHz to 5MHz

Inductive sensing is a contactless, short-range sensing technology enabling high-resolution and low-cost position sensing of conductive targets, even in harsh environments. Using a coil or spring as a sensor, the LDC1041 inductance-to-digital converter provides system designers a way to achieve high performance and reliability at a lower system cost than other competing solutions.

The LDC1041 is pin compatible with the LDC1000 (16-bit Rp/24-bit L) and the LDC1051 (8-bit Rp). This family of devices offers system designers different resolution options based on their application and system requirements.

The LDC1041 is available in a 5mm x 4mm WSON-16 package. Device programming via SPI allows for easy configuration using a microcontroller.

Inductive sensing is a contactless, short-range sensing technology enabling high-resolution and low-cost position sensing of conductive targets, even in harsh environments. Using a coil or spring as a sensor, the LDC1041 inductance-to-digital converter provides system designers a way to achieve high performance and reliability at a lower system cost than other competing solutions.

The LDC1041 is pin compatible with the LDC1000 (16-bit Rp/24-bit L) and the LDC1051 (8-bit Rp). This family of devices offers system designers different resolution options based on their application and system requirements.

The LDC1041 is available in a 5mm x 4mm WSON-16 package. Device programming via SPI allows for easy configuration using a microcontroller.
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LDC1612 ACTIVE 2-Ch, 28-bit, high-resolution Inductance to digital converter LDC1612 is a 2-channel, 28-bit L, high-resolution LDC that enables better performance.
LDC1614 ACTIVE 4-Ch, 28-bit, high-resolution Inductance to digital converter LDC1614 is a 4-channel, 28-bit L, high-resolution LDC that enables better performance.

Technical documentation

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Type Title Date
* Data sheet LDC1041: 8-bit Rp, 24-bit L Inductance-to-Digital Converter with SPI datasheet PDF | HTML 13 Mar 2014
Application note Common Inductive and Capacitive Sensing Applications (Rev. B) 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 May 2021
Application note LDC Target Design (Rev. B) PDF | HTML 13 May 2021
EVM User's guide LDC1000/LDC1001/LDC1041/LDC1051 Evaluation Module User's Guide (Rev. B) 15 Nov 2019
Application note Using Multiple Sensors With LDC100x (Rev. A) 12 Nov 2019
Application note Configuring Inductive-to-Digital-Converters for Parallel Resistance (RP) Variati (Rev. B) 11 Nov 2019
Technical article How to use the LDC calculations tool 10 Nov 2016
Application note Measuring Rp of an L-C Sensor for Inductive Sensing 01 Oct 2015
User guide LDC Reference Coils User’s Guide 14 May 2015
Technical article Inductive sensing: Sensor frequency constraints 21 Nov 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

GUI for evaluation module (EVM)

SNOC028 — Sensing Solutions EVM GUI Tool v1.10.0

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Supported products & hardware

Supported products & hardware

Products
Humidity sensors
HDC1000 — Low Power, 3% Accuracy Digital Humidity Sensor with Integrated Temperature Sensor HDC1050 — ±3% low-power, digital humidity sensor with temperature sensor HDC2010 — 2% RH ultra-small, low-power digital relative humidity sensor HDC2080 — 2% RH ultra-low-power digital relative humidity sensor, interrupt/DRDY
Inductive sensor AFEs
LDC1001-Q1 — Automotive, 5V, grade-0, Inductance to Digital Converter LDC1041 — 1-Ch, 5V, 24-bit L, 8-bit Rp, inductance to digital converter LDC1051 — 1-Ch, 5V, 8-bit Rp, inductance to digital converter LDC1101 — 1-Ch, 1.8V, 24-bit L, 16-bit Rp, inductance to digital converter for high speed applications LDC1312 — 2-Ch, 12-bit, general purpose inductance to digital converter LDC1312-Q1 — 2-Ch, 12-bit, general purpose automotive inductance to digital converter LDC1314 — 4-Ch, 12-bit, general purpose inductance to digital converter LDC1314-Q1 — 4-Ch, 12-bit, general purpose automotive inductance to digital converter LDC1612 — 2-Ch, 28-bit, high-resolution Inductance to digital converter LDC1612-Q1 — 2-Ch, 28-bit, high-resolution automotive inductance to digital converter LDC1614 — 4-Ch, 28-bit, high-resolution Inductance to digital converter LDC1614-Q1 — 4-Ch, 28-bit, high-resolution automotive inductance to digital converter LDC2112 — 2-Ch inductance to digital converter with baseline tracking for low power touch buttons LDC2114 — 4-Ch inductance to digital converter with baseline tracking for low power touch buttons
Signal conditioners
FDC1004 — 4-Ch, 16-bit, capacitance to digital converter with active shield driver FDC1004-Q1 — 4-Ch, 16-bit, automotive capacitance to digital converter with active shield driver FDC2112 — 2-Ch, 12-bit, capacitance to digital converter FDC2112-Q1 — 2-Ch, 12-bit, automotive capacitance to digital converter FDC2114 — 4-Ch, 12-bit, capacitance to digital converter FDC2114-Q1 — 4-Ch, 12-bit, automotive capacitance to digital converter FDC2212 — 2-Ch, 28-bit, capacitance to digital converter FDC2212-Q1 — 2-Ch, 28-bit, automotive capacitance to digital converter FDC2214 — 4-Ch, 28-bit, capacitance to digital converter FDC2214-Q1 — 4-Ch, 28-bit, automotive capacitance to digital converter
Hardware development
Evaluation board
FDC1004EVM — FDC1004EVM - 4 Channel Capacitive to Digital Converter Evaluation Module FDC1004QEVM — Automotive 4-Channel Capacitive to Digital Converter Evaluation Module FDC2114EVM — FDC2114 with Two Capacitive Sensors Evaluation Module FDC2214EVM — FDC2214 with Two Capacitive Sensors Evaluation Module HDC1010EVM — HDC1010 Low Power Humidity and Temperature Sensor Evaluation Module HDC1080EVM — HDC1080 low-power humidity and temperature sensor evaluation module HDC2010EVM — HDC2010 Low Power Humidity and Temperature Sensor Evaluation Module HDC2080EVM — HDC2080 Low Power Humidity and Temperature Sensor Evaluation Module LDC1000EVM — LDC1000EVM - Evaluation Module for Inductance to Digital Converter with Sample PCB Coil LDC1312EVM — LDC1312 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils LDC1314EVM — LDC1314 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils LDC1612EVM — LDC1612 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils LDC1614EVM — LDC1614 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils LDC2114EVM — LDC2114 1.8V 4-Channel Inductive Touch Evaluation Module
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Calculation tool

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.

Supported products & hardware

Supported products & hardware

Products
Inductive sensor AFEs
LDC0851 — Differential inductive switch for MCU-less applications LDC1041 — 1-Ch, 5V, 24-bit L, 8-bit Rp, inductance to digital converter LDC1051 — 1-Ch, 5V, 8-bit Rp, inductance to digital converter LDC1101 — 1-Ch, 1.8V, 24-bit L, 16-bit Rp, inductance to digital converter for high speed applications LDC1312 — 2-Ch, 12-bit, general purpose inductance to digital converter LDC1312-Q1 — 2-Ch, 12-bit, general purpose automotive inductance to digital converter LDC1314 — 4-Ch, 12-bit, general purpose inductance to digital converter LDC1314-Q1 — 4-Ch, 12-bit, general purpose automotive inductance to digital converter LDC1612 — 2-Ch, 28-bit, high-resolution Inductance to digital converter LDC1612-Q1 — 2-Ch, 28-bit, high-resolution automotive inductance to digital converter LDC1614 — 4-Ch, 28-bit, high-resolution Inductance to digital converter LDC1614-Q1 — 4-Ch, 28-bit, high-resolution automotive inductance to digital converter LDC2112 — 2-Ch inductance to digital converter with baseline tracking for low power touch buttons LDC2114 — 4-Ch inductance to digital converter with baseline tracking for low power touch buttons LDC3114 — 4-channel inductance-to-digital converter for low-power proximity and touch-button sensing LDC3114-Q1 — Automotive 4-channel inductance-to-digital converter for low-power proximity & touch-button sensing
Hardware development
Evaluation board
LDC0851EVM — LDC0851EVM - High Accuracy Inductive Switch with Stacked Coils Evaluation Module LDC1614EVM — LDC1614 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils
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Reference designs

TIDA-00215 — Distance and Weight Measurement Using Inductive Sensing Reference Design

The Distance and Weight Measurement Using Inductive Sensing Reference Design is a sub-system design which converts a distance measurement to a weight measurement. This design is intended as a reference design for building automation and weigh scale applications. In mechanical systems, there (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
WSON (NHR) 16 View options
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