User manual

ManualsBrandsTEXAS INSTRUMENTS ManualsDev KitsPCB design board

2013

ti.com/ldc

LDC1000EVM

EVM Quick Start Guide

Getting started with the LDC1000EVM

1. Download and install the EVM software from ti.com/ldc

2. Plug in EVM to computer’s

USB port

3. Make sure GUI indicates EVM connection

4. Move conductive target

near to/far from coil

5. Observe GUI for changes in LDC response

LDC1000

Inductance to Digital

Converter

Fig.1 Example data capture

Summary of content (5 pages)

PAGE 1
LDC1000EVM EVM Quick Start Guide Getting started with the LDC1000EVM 1. Download and install the EVM software from ti.com/ldc 2. Plug in EVM to computer’s USB port 3. Make sure GUI indicates EVM connection 4. Move conductive target near to/far from coil LDC1000 Inductance to Digital Converter 5. Observe GUI for changes in LDC response Fig.1 Example data capture ti.
PAGE 2
Interfacing Different Sensor Coils Getting a custom sensor to operate with LDC1000 1. Break off EVM coil along perforation J2 connector block Fig.2 Custom coil connection 2. Connect custom sensor coil and capacitor (C) to J2 on the EVM (Fig. 2) Steps to pick C: a. Calculate / measure inductance of the coil (L) b. Calculate / measure resistance of the coil (RS) c.
PAGE 3
(continued) Keep target at desired minimum sensing distance. Reconfigure Rp_MIN to a higher value such that “Proximity Data” is close to 32768 (215) Keep target at desired maximum sensing distance. Reduce Rp_MAX sequentially until “Proximity Data” becomes 0. Set final value of Rp_MAX to last working value with “Proximity Data” greater than 0. 4a 4d 4b 4c Fig. 3 Example setting 5.
PAGE 4
Design Resources and References Available on ti.com/ldc • LDC1000 datasheet • Complete LDC1000 user guide • LDC1000 application note • EVM software download • WEBENCH® Inductive Sensing Coil Designer E2E Inductive Sensing Forum ti.com/e2eldc TM Important Notice: The products and services of Texas Instruments Incorporated and its subsidiaries described herein are sold subject to TI’s standard terms and conditions of sale.
PAGE 5
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.