SX8724SEVK Semtech

SX8724SEVK Evaluation Kit for SX8724S Data Acquisition System ADVANCED COMMUNICATIONS & SENSING USER GUIDE SX8724SEVK USER GUIDE Evaluation Kit for SX8724S Data Acquisition System Description Features The SX8724SEVK is a platform for SX8724S evaluation Evaluation Board and sensing application prototyping. It consists of a Directly connects most types of sensors single board with the ZoomingADC device interfaced to Extended temperature range from -40 to 125C the computer through a USB gateway. 2.4V to 5.5V operation Supply from 5V USB, externally or regulated 3.3V USB interface with gateway to the SX8724S All SX8724S I/Os are available and placed on breakout On board master MCU with flash memory, access pads for easy access. The tool is intended to be the to all IO interface between the sensor and the PC in order to Prototyping area ease the handling of the SX8724S. I/Os, board supplies and grounds placed on pads Graphical User Interface Easy settings through registers and controls System and device performance analysis tool Save and load configurations Log to file SX8724S ZoomingADC System Evaluation Up to 16-bit differential data acquisition Programmable gain: (1/12 to 1000) Sensor offset compensation up to 15 times full scale of input signal 3 differential or 6 single-ended signal inputs Programmable Resolution versus Speed versus Supply current External reference input voltage Internal reference output Digital outputs to bias sensors Low-power (250 uA for 16b 500 S/s) Equipment Needed Digital Interface PC with Windows XP or a latest version Access to SPI signal Powered USB 2.0 port ADC conversion ready 2 GPIO Possibility to chain boards on the same bus Ordering Informations Application Examples in this User Guide EVK Part Number Function Interfacing your first pressure sensor SX8724SEVK SX8724S (SPI) Evaluation ACS - Revision 1.0 May 2011 Page 1 www.semtech.com Semtech Corp.SX8724SEVK Evaluation Kit for SX8724S Data Acquisition System ADVANCED COMMUNICATIONS & SENSING USER GUIDE TABLE OF CONTENT Section Page GETTING STARTED 4 1 Introduction . 4 2 Evaluation Kit Contents . 4 3 Board Overview . 5 4 Software Installation 6 4.1 About Microsoft .NET Framework 7 5 Board Connection and Drivers Installation (first time) 8 HARDWARE DESCRIPTION . 9 6 Board Schematic 9 7 User Interfaces . 10 7.1 Prototyping Area 11 8 Power Supply 12 8.1 Power Sources Specifications 12 8.2 Power Supply Selection 13 9 USB Interface 14 9.1 Gateway to SX8724S 14 10 EVK Bill of Materials List . 16 11 Board Physical Dimensions . 18 GRAPHICAL USER INTERFACE . 19 12 Software Tool Overview 19 13 Main Window 20 13.1 Menu Tool Bar 20 13.2 Window Tool Bar 22 13.3 Status Bar . 23 13.4 ZoomingADC controls 24 13.5 Voltage Control . 27 13.6 Estimated Device Performances 27 13.7 Display Chart . 29 13.8 Log Data to File . 30 14 ZoomingADC Data Display Window . 31 14.1 ZoomingADC data display panel 31 14.2 Histogram Panel - Noise Analysis . 32 14.3 Measured System Performances . 32 15 Registers Display Window 34 16 Verification Mode Window 34 APPLICATION EXAMPLES . 35 17 Interfacing your first pressure sensor 35 17.1 Introduction 35 17.2 Pressure Sensor 35 17.3 Using the Evaluation Board and the GUI . 39 17.4 Reading the sensor using the GUI 40 ACS - Revision 1.0 May 2011 Page 2 www.semtech.com Semtech Corp.