5V, High Resolution, AECQ100, Inductance to Digital Converter for Inductive Sensing Applications - LDC1000-Q1


5V, High Resolution, AECQ100, Inductance to Digital Converter for Inductive Sensing Applications



Inductive sensing is a contactless, short-range sensing technology that enables low-cost, high-resolution sensing of conductive targets in the presence of dust, dirt, oil, and moisture, making this technology extremely reliable in harsh environments. Using a coil that can be created for example on a PCB as a sensing element, the LDC1000-Q1 device enables ultra-low cost system solutions.

Inductive sensing technology enables precise measurement of linear or 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 competitive solutions.

The LDC1000-Q1 device is the first automotive-qualified LDC, offering the benefits of inductive sensing in a low-power, small-footprint solution. The product is available in a 16-pin TSSOP package and offers several modes of operation. An SPI interface simplifies connection to an MCU.


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 0: –40°C to 150°C
      Ambient Operating Temperature Range E
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range Q
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Magnet-Free Operation
  • Sub-Micron Precision
  • Adjustable Sensing Range (through Coil Design)
  • Lower System Cost
  • Remote Sensor Placement (Decoupling the LDC
    from Harsh Environments)
  • High Durability (by Virtue of Contact-Less Operation)
  • Insensitivity to Environmental Interference (such as
    Dirt, Dust, Water, Oil)
  • Supply Voltage, Analog: 4.75 to 5.25 V
  • Supply Voltage, IO: 1.8 to 5.25 V
  • Supply Current (Without LC Tank): 1.7 mA
  • RP Resolution: 16-bit
  • L Resolution: 24-bit
  • LC Frequency Range: 5 kHz to 5 MHz

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Parametrics Compare all products in Inductance to Digital Converters

# Input Channels
L (Inductance) Resolution (Bits)
Sensor Frequency (Hz)
Rp (Parallel Resonance Impedance) Resolution (Bits)
Operating Temperature Range (C)
5k to 5M   
-40 to 125
-40 to 150   

Other qualified versions of LDC1000-Q1

Version Part Number Definition
Catalog LDC1000 TI's standard catalog product

WEBENCH® Designer LDC1000-Q1

 Inductive Sensing  Coil Designer
Use this tool to get started with inductive sensing coil design.
Distance (d)  cm
Resolution (r)  μm
Diameter of Target (td)  cm
Target Material (tm)
Resolution based on  Rp  L