Application Examples; Interfacing Your First Pressure Sensor; Introduction; Pressure Sensor - Semtech SX8724SEVK User Manual

ADVANCED COMMUNICATIONS & SENSING

APPLICATION EXAMPLES

17

Interfacing your first pressure sensor

17.1

Introduction

This chapter intends to show how to interface a pressure sensor using the SX8724SEVK evaluation board.
It also shows how to use efficiently the ZoomingADC™ of the SX8724S and demonstrate the benefits of the
zooming feature.
17.2

Pressure Sensor

The chosen sensor for this application is a 200kPa absolute pressure sensor type MPX2202AP by Freescale.
Its main characteristics are described in the table below:
ACS - Revision 1.0
© Semtech Corp.
Table 3. Sensor main characteristics
Characteristic
Pressure range
Supply voltage
Supply current
Full scale span
May 2011
Evaluation Kit for SX8724S Data Acquisition System
Value (Typ)
0-200
3.3
3.3
3.3
Page 35
SX8724SEVK
USER GUIDE
Unit
kPa
Vdc
mAdc
mVdc
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