Home Sensors Specialty sensors Inductive sensor AFEs
Home
Sensors
Specialty sensors
Inductive sensor AFEs

LDC1101

ACTIVE

1-Ch, 1.8V, 24-bit L, 16-bit Rp, inductance to digital converter for high speed applications

Order now
Data sheet

LDC1101

ACTIVE
Data sheet Order now

Product details

Applications Metal proximity detection Number of input channels 1 Rating Catalog Vs (max) (V) 3.46 Vs (min) (V) 1.71 Operating temperature range (°C) -40 to 125
Applications Metal proximity detection Number of input channels 1 Rating Catalog Vs (max) (V) 3.46 Vs (min) (V) 1.71 Operating temperature range (°C) -40 to 125
VSON (DRC) 10 9 mm² 3 x 3
  • Wide Operating Voltage Range: 1.8 V to 3.3 V
  • Sensor Frequency Range: 500 kHz to 10 MHz
  • RP Resolution: 16-Bit
  • L Resolution: 16- or 24-Bit
  • 180-kSPS Conversion Rate
  • Threshold Detection Functionality
  • 1% Part-to-Part Variation in RP Measurement
  • Supply Current:
    • 1.4-µA Shutdown mode
    • 135-µA Sleep mode
    • 1.9-mA Active Mode (no sensor connected)
  • Sub-Micron Distance Resolution Achievable
  • Remote Sensor Placement Isolating the LDC from Harsh Environments
  • Robust Against Environmental Interferences such as Oil, Water, Dirt, or Dust
  • Minimal External Components
  • Magnet-Free Operation
  • Operating Temperature: –40°C to +125°C
  • Wide Operating Voltage Range: 1.8 V to 3.3 V
  • Sensor Frequency Range: 500 kHz to 10 MHz
  • RP Resolution: 16-Bit
  • L Resolution: 16- or 24-Bit
  • 180-kSPS Conversion Rate
  • Threshold Detection Functionality
  • 1% Part-to-Part Variation in RP Measurement
  • Supply Current:
    • 1.4-µA Shutdown mode
    • 135-µA Sleep mode
    • 1.9-mA Active Mode (no sensor connected)
  • Sub-Micron Distance Resolution Achievable
  • Remote Sensor Placement Isolating the LDC from Harsh Environments
  • Robust Against Environmental Interferences such as Oil, Water, Dirt, or Dust
  • Minimal External Components
  • Magnet-Free Operation
  • Operating Temperature: –40°C to +125°C

The LDC1101 is a 1.8-V to 3.3-V, high-resolution inductance-to-digital converter for short-range, high-speed, contactless sensing of position, rotation, or motion, enabling reliable, accurate measurements even in the presence of dust or dirt, making it ideal for open or harsh environments.

The LDC1101 features dual inductive measurement cores, allowing for > 150 ksps 16-bit RP and L measurements simultaneous with a high-resolution L measurement which can sample at > 180 ksps with a resolution of up to 24 bits. The LDC1101 includes a threshold-compare function which can be dynamically updated while the device is running.

Inductive sensing technology enables precise measurement of linear/angular position, displacement, motion, compression, vibration, metal composition, and many other applications in markets including automotive, consumer, computer, industrial, medical, and communications. Inductive sensing offers better performance and reliability at lower cost than other, competing solutions.

The LDC1101 offers these benefits of inductive sensing in a small 3-mm × 3-mm 10-pin VSON package. The LDC1101 can be easily configured by a microcontroller using the 4-pin SPI™.

The LDC1101 is a 1.8-V to 3.3-V, high-resolution inductance-to-digital converter for short-range, high-speed, contactless sensing of position, rotation, or motion, enabling reliable, accurate measurements even in the presence of dust or dirt, making it ideal for open or harsh environments.

The LDC1101 features dual inductive measurement cores, allowing for > 150 ksps 16-bit RP and L measurements simultaneous with a high-resolution L measurement which can sample at > 180 ksps with a resolution of up to 24 bits. The LDC1101 includes a threshold-compare function which can be dynamically updated while the device is running.

Inductive sensing technology enables precise measurement of linear/angular position, displacement, motion, compression, vibration, metal composition, and many other applications in markets including automotive, consumer, computer, industrial, medical, and communications. Inductive sensing offers better performance and reliability at lower cost than other, competing solutions.

The LDC1101 offers these benefits of inductive sensing in a small 3-mm × 3-mm 10-pin VSON package. The LDC1101 can be easily configured by a microcontroller using the 4-pin SPI™.
filter Find other Inductive sensor AFEs
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 13
Type Title Date
* Data sheet LDC1101 1.8-V High-Resolution, High-Speed Inductance-to-Digital Converter datasheet (Rev. D) PDF | HTML 03 Oct 2016
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
Application note EMI Considerations for Inductive Sensing 22 Feb 2017
Technical article How to use the LDC calculations tool PDF | HTML 10 Nov 2016
Technical article Did you know inductive proximity sensing can be implemented with a single chip? PDF | HTML 25 Apr 2016
Application note Setting LDC1312/4, LDC1612/4, and LDC1101 Sensor Drive Configuration 05 Apr 2016
Application note Optimizing L Measurement Resolution for the LDC161x and LDC1101 12 Feb 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 Oct 2015

Design & development

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

Evaluation board

LDC1101EVM — LDC1101 1.8V, High Resolution Inductance to Digital Converter Evaluation Module

The LDC1101 evaluation module demonstrates inductive sensing technology to sense and measure the presence or position of a conductive target. The evaluation board includes an example PCB sensor coil that connects to the LDC1101. An MSP430 microcontroller is used to interface the LDC to a host (...)
User guide: PDF
Not available on TI.com
GUI for evaluation module (EVM)

SNOC028 — Sensing Solutions EVM GUI Tool v1.10.0

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-channel 16-bit capacitance-to-digital converter with active shield driver for EMC protection
  • FDC1004-Q1 — Automotive, 4-channel 16-bit capacitance-to-digital converter with active shield driver for EMC
  • 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
Download
Simulation model

LDC1101 IBIS MODEL

SNIM009.ZIP (50 KB) - IBIS Model
Download
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
Download
Reference designs

TIDA-00563 — Inductive Proximity Switch BoosterPack Reference Design

TIDA-00563 offers highly-integrated analog front end (AFE) inductance-to-digital converters (LDCs) optimized for use in industrial proximity sensors for contactless and robust applications such as presence detection and event counting. Inductive sensing technology provides reliable and accurate (...)
User guide: PDF
Schematic: PDF
Reference designs

TIDA-00460 — Inductive Linear Position Sensing Booster Pack Reference Design

Typical implementations of distance measurements use expensive rare-earth magnets. To lower overall system cost, this reference design walks through the implementation of industry’s first inductance-to-digital converters from TI for linear position sensing without the use of any expensive (...)
User guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
VSON (DRC) 10 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos