SNOU162A November   2018  – June 2026

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Device Information
  6. 2Hardware
    1. 2.1 EVM Connections
      1. 2.1.1 Theory of Operation
      2. 2.1.2 EVM Connections
      3. 2.1.3 EVM Interface
    2. 2.2 Quick Start Guide
      1. 2.2.1 Supply Power to the LDC5072EVM
      2. 2.2.2 Adjust the AGC
      3. 2.2.3 Connect the Inductive Sensor
      4. 2.2.4 Measure the Analog Outputs
  7. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  8. 4Additional Information
    1. 4.1 Trademarks
  9. 5Revision History

1.3 Device Information

The LDC5072-Q1 IC is an analog front-end for contact-less, inductive position sensors targeted for absolute rotary position . The LDC5072-Q1 excites a coil that is typically printed on a printed circuit board (PCB). The excitation is coupled back into two sets of receiver coils on the same PCB using a conductive target that is placed in close proximity of the PCB. The conductive target can also be a pattern printed on another PCB. The coil PCB stays stationary and the target moves with the motor, actuator, or valve. The excitation coil generates a secondary voltage on the receiver coils depending on the position of the target relative to the receiver coils. A signal representation of the position is obtained by reading in the voltages from the receiver coils, processing the voltages, and giving analog outputs representing the Sine and Cosine components of the position of the target.

The following table shows the devices that are compatible with the LDC5072-Q1 EVM.

Table 1-1 Device Compatibility
PART NUMBER PACKAGE PACKAGE

SIZE
LDC5072-Q1 PW (TSSOP, 16) 5.00mm × 6.40mm
LDC5071-Q1