LDC1312-Q1

ACTIVE

2-Ch, 12-bit, general purpose automotive inductance to digital converter

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Product details

Parameters

Features Raw code digital output Operating temperature range (C) -40 to 125 Vs (Min) (V) 2.7 Vs (Max) (V) 3.6 Resolution (Bits) 12 Rating Automotive open-in-new Find other Signal conditioners

Package | Pins | Size

WSON (DNT) 12 16 mm² 4 x 4 open-in-new Find other Signal conditioners

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1:–40°C to +125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • Easy-to-use – Minimal Configuration Required
  • Measure up to 4 Sensors with One IC
  • Multiple Channels Support Environmental and
    Aging Compensation
  • Multi-Channel Remote Sensing Provides Lowest
    System Cost
  • Pin-Compatible Medium and High-resolution Options
    • LDC1312-Q1/LDC1314-Q1: 2/4-ch 12-bit LDC
    • LDC1612-Q1/LDC1614-Q1: 2/4-ch 28-bit LDC
  • Supports Wide Sensor Frequency Range of 1kHz
    to 10MHz
  • Power Consumption:
    • 35 µA Low Power Sleep Mode
    • 200 nA Shutdown Mode
  • 3.3V Operation
  • Support Internal or External Reference Clock
  • Immune to DC Magnetic Fields and Magnets
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Description

The LDC1312-Q1 and LDC1314-Q1 are 2- and 4-channel, 12-bit inductance to digital converters (LDCs) for inductive sensing solutions. With multiple channels and support for remote sensing, the LDC1312-Q1 and LDC1314-Q1 enable the performance and reliability benefits of inductive sensing to be realized at minimal cost and power. The products are easy to use, only requiring that the sensor frequency be within 1 kHz and 10 MHz to begin sensing. The wide 1 kHz to 10 MHz sensor frequency range also enables use of very small PCB coils, further reducing sensing solution cost and size.

The LDC1312-Q1 and LDC1314-Q1 offer well-matched channels, which allow for differential and ratiometric measurements. This enables designers to use one channel to compensate their sensing for environmental and aging conditions such as temperature, humidity, and mechanical drift. Given their ease of use, low power, and low system cost these products enable designers to greatly improve on existing sensing solutions and to introduce brand new sensing capabilities to products in all markets, especially consumer and industrial applications. Inductive sensing offers better performance, reliability, and flexibility than competitive sensing technologies at lower system cost and power.

The LDC1312-Q1 and LDC1314-Q1 are easily configured via an I2C interface. The two-channel LDC1312-Q1 is available in a WSON-12 package and the four-channel LDC1314-Q1 is available in a WQFN-16 package.

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Technical documentation

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Type Title Date
* Datasheet LDC1312-Q1, LDC1314-Q1 Multi-Channel 12-Bit Inductance to Digital Converter (LDC) for Inductive Sensing datasheet Apr. 29, 2016
Application notes Common Inductive and Capacitive Sensing Applications (Rev. A) Mar. 30, 2020
Application notes Simulate Inductive Sensors Using FEMM (Finite Element Method Magnetics) Mar. 25, 2020
Application notes Configuring Inductive-to-Digital-Converters for Parallel Resistance (RP) Variati (Rev. B) Nov. 11, 2019
Application notes LDC Device Selection Guide (Rev. C) Nov. 11, 2019
Application notes LDC Sensor Design (Rev. B) Nov. 08, 2019
Application notes LDC1xxx LDC Target Design (Rev. A) May 09, 2017
Application notes EMI Considerations for Inductive Sensing Feb. 22, 2017
Application notes LDC1312, LDC1314, LDC1612, LDC1614 Sensor Status Monitoring Oct. 09, 2016
User guides LDC131x and LDC161x EVM User’s Guide (Rev. A) Sep. 21, 2016
Application notes Setting LDC1312/4, LDC1612/4, and LDC1101 Sensor Drive Configuration Apr. 05, 2016
Application notes Inductive Sensing Touch-On-Metal Buttons Design Guide Mar. 30, 2016
Application notes Power Reduction Techniques for the LDC131x/161x for Inductive Sensing Mar. 18, 2016
Application notes Optimizing L Measurement Resolution for the LDC1312 and LDC1314 Feb. 12, 2016
Technical articles SigCon Architect: The keys to your high-speed design Oct. 27, 2015
Application notes Measuring Rp of an L-C Sensor for Inductive Sensing Oct. 01, 2015
User guides LDC Reference Coils User’s Guide May 14, 2015
Technical articles Make signal conditioning easy with WEBENCH® Interface Designer Jan. 27, 2015
Technical articles Get Connected: Equalization Oct. 15, 2014
Technical articles One part for all: Multi-standard signal conditioners Mar. 07, 2014

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$99.00
Description

The LDC1312 evaluation module demonstrates inductive sensing technology for sensing and measuring the presence of a conductive target. The evaluation module includes two example PCB sensor coils that connect to the four channels of the LDC1312, and an MSP430 microcontroller is used to interface the (...)

Features
  • Multiple board perforations provide maximum evaluation and system design flexibility
  • Includes example sensor coils for the different channels
  • Accompanying GUI for quick concept demonstration and data capture
  • EVM does not require additional components for operation, enabling rapid device evaluation
EVALUATION BOARDS Download
document-generic User guide
$29.00
Description

The LDCCOILEVM is designed to provide maximum flexibility for system prototyping and allow for experimentation with different coil sizes. It includes 19 unique types of PCB coils that range from long rectangular asymmetric coils to small circular coils 3mm in diameter. Every coil is separated by (...)

Features
  • 19 different types of coils
  • Perforated edges to separate and use remotely
  • Smaller coils have extra pads for a series inductor

Design tools & simulation

SIMULATION MODELS Download
SNIM004.ZIP (26 KB) - IBIS Model
CALCULATION TOOLS Download
SLYC137E.ZIP (3713 KB)

CAD/CAE symbols

Package Pins Download
WSON (DNT) 12 View options

Ordering & quality

Support & training

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Videos

Anti-tamper Techniques to Thwart Attacks on Smart Meters—Detecting case tamper attacks using inductive switches: TIDA-01377 Case Tamper Detection using Inductive Sensing Reference Design Demo

Watch the TIDA-01377 in action as it detects when someone opens the terminal block case of an electricity meter!  

Posted: 12-Jan-2017
Duration: 07:34

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