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ADVANCED COMMUNICATIONS & SENSING
USER GUIDE
SX8724SEVK
Evaluation Kit for SX8724S Data Acquisition System
ACS - Revision 1.0 May 2011
© Semtech Corp.
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:
Table 3. Sensor main characteristics
Characteristic
Value (Typ)
Unit
Pressure range
0-200
kPa
Supply voltage
3.3
Vdc
Supply current
3.3
mAdc
Full scale span
3.3
mVdc
