Texas Instruments PGA309EVM-USB manual

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User's Guide

SBOU084 – February 2010

PGA309EVM-USB

This user’s guide describes the characteristics, operation, and use of the PGA309EVM-USB evaluation module (EVM). This EVM is designed to evaluate the performance of the PGA309, a voltage output, programmable sensor conditioner. This document covers all pertinent areas involved to properly use this EVM board, allowing for user evaluation suitable to a variety of applications. This document also includes the physical printed circuit board (PCB) layout and circuit descriptions. A schematic of the PGA309EVM-USB is available as a separate download from the TI web site.

 

Contents

 

 

1

Introduction and Overview

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2

System Setup

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3

PGA309EVM-USB Hardware Setup

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4

PGA309EVM-USB Software Overview

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List of Figures

 

 

1

Hardware Included with the INA282-286EVM

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2

PGA309EVM-USB Hardware Setup

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3

PGA309_Test_Board Block Diagram

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4

PGA309_Test_Board Schematic: Input Circuitry

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5

PGA309_Test_Board Schematic: Power, Reference, and Digital Connections

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PGA309_Test_Board Schematic: Output Circuitry

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PGA309_Test_Board Schematic: Sensor Emulator Circuitry

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PGA309_Test_Board Connections to USB-DAQ-Platform and EEPROM

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Theory of Operation For USB-DAQ-Platform

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PGA309EVM-USB Typical Hardware Connections

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Connecting the Two EVM PCBs

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12

Connecting Power to the EVM

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Connecting the USB Cable

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14

Default Jumper Settings (PGA309_Test_Board)

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Default Jumper Settings (USB-DAQ-Platform)

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PGA309EVM-USB Software: Registers Tab

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PGA309EVM-USB Software: EEPROM Tab

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PGA309EVM-USB Software: Block Diagram

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PGA309EVM-USB Software: Auto Calibrate Tab— Sensor Definition

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PGA309EVM-USB Software: Sensor Emulator Control Panel Tool

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PGA309EVM-USB Software: Auto Calibrate Tab— PGA Setup

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PGA309EVM-USB Software: Auto Calibrate Tab— Two-Point Calibration and Linearization

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PGA309EVM-USB Software: Auto Calibrate Tab— Temperature Error Compensation

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PGA309EVM-USB Software: Auto Calibrate Tab— Post Cal Error Check

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PGA309EVM-USB Software: Auto Calibrate Tab— DMM Options

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Microsoft, Windows are registered trademarks of Microsoft Corporation.

 

 

I2C is a trademark of NXP Semiconductors.

 

 

All other trademarks are the property of their respective owners.

 

 

SBOU084 –February 2010

PGA309EVM-USB

1

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Copyright © 2010, Texas Instruments Incorporated

 

 

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Contents PGA309EVM-USB USB-DAQ-Platform Jumper Settings Hardware Included with the INA282-286EVM PGA309EVM-USB HardwareIf You Need Assistance Related Documentation from Texas InstrumentsInformation About Cautions and Warnings Theory of Operation for PGA309TestBoard Hardware PGA309EVM-USB Hardware SetupPGA309TestBoard Connections PGA309TestBoard Schematic Input Circuitry System Setup PGA309TestBoard Schematic Output Circuitry PGA309TestBoard Schematic Sensor Emulator Circuitry PGA309TestBoard Connections to USB-DAQ-Platform and Eeprom PGA309 Test Board Parts List PGA309TestBoard Parts ListJMP1, JMP2, JMP3, JMP4 1 J1 25-Pin Male Dsub PGA309TestBoard Signal Definitions and PinoutsJ1 Pinout 25-Pin Male Dsub J2 Pinout 25-Pin Female Dsub 2 J2 25-Pin Female DsubTheory of Operation for USB-DAQ-Platform ToPCandPowerSuppliesElectrostatic Discharge Warning USBDAQPlatformPGA309EVM-USB Typical Hardware Connections Typical Hardware ConnectionsConnecting the Two EVM PCBs Connecting the HardwareConnecting Power to the EVM Connecting PowerConnecting the USB Cable Connecting the USB Cable to the PGA309EVM-USBDefault Jumper Settings PGA309TestBoard PGA309EVM-USB Jumper SettingsPGA309TestBoard Jumper Functions General Default Jumper Settings USB-DAQ-PlatformPGA309TestBoard Jumper Functions Sensor Emulator Section PGA309TestBoard Jumper Functions Miscellaneous ConnectionsJUMP1 EXT USB-DAQ-Platform Jumper SettingsUsing the PGA309EVM-USB Software PGA309EVM-USB Software InstallOperating Systems for PGA309 Software Starting the PGA309EVM-USB SoftwarePGA309EVM-USB Software Registers Tab Registers TabPGA309EVM-USB Software Eeprom Tab Eeprom Table TabPGA309EVM-USB Software Block Diagram Block Diagram TabSensor Definition Functions Auto Calibrate TabPGA309EVM-USB Software Sensor Emulator Control Panel Tool PGA309EVM-USB Software Auto Calibrate Tab-PGA Setup PGA Setup FunctionsTwo-Point Calibration and Linearization Functions Shows the Temperature Error Compensation sub-tab Temperature Error Compensation FunctionsPost Cal Error Check PGA309EVM-USB Software Auto Calibrate Tab-DMM Options DMM OptionsFCC Warning Evaluation Board/Kit Important NoticeEVM Warnings and Restrictions Important Notice

PGA309EVM-USB specifications

The Texas Instruments PGA309EVM-USB is an Evaluation Module designed specifically for the PGA309 Precision Analog Front End (AFE) family. This versatile and powerful device serves various applications in the realm of sensor signal conditioning, particularly for pressure sensors, temperature sensors, and other analog sensors requiring high precision.

One of the main features of the PGA309EVM-USB is its high-performance PGA309 device, which incorporates a programmable gain amplifier (PGA) allowing for flexible signal amplification. The PGA309 has a gain range from 1 to 128, enabling it to adapt to a wide array of sensor types and output levels. This flexibility is crucial for achieving optimal performance in diverse applications.

The module also leverages advanced analog and digital processing technologies, which enhance its capabilities. It integrates an onboard microcontroller, allowing users to easily configure settings, execute control algorithms, and manage data acquisition. The built-in USB interface simplifies the communication with a PC, making it straightforward to control the EVM through intuitive software provided by Texas Instruments.

Another significant characteristic of the PGA309EVM-USB is its highly accurate signal conditioning features, such as offset and gain calibration, which ensure minimized errors and improved measurement reliability. The device supports a variety of digital output configurations, including I2C and SPI, to allow easy integration into different system architectures.

In addition to its robust signal processing core, the PGA309EVM-USB is designed with user-friendly interfaces, making it suitable for both experienced engineers and those new to sensor design. The comprehensive software toolkit offers a graphical user interface (GUI) that enables real-time monitoring and adjustment of parameters, ensuring users can optimize their applications.

Furthermore, the device is designed for functionality in harsh environments, incorporating features to withstand temperature variations and electrical noise. This reliability adds value for applications in industrial automation, automotive systems, and medical devices.

In summary, the Texas Instruments PGA309EVM-USB stands out as a powerful tool for engineers looking to design and prototype high-precision sensor signal conditioning applications. With its programmable gain amplifier, advanced processing capabilities, and user-friendly interfaces, it represents a significant advancement in the field of analog signal processing, allowing for greater flexibility and accuracy in diverse applications.