PGA309EVM-USB Datasheet, PDF (1/54 Pages) Texas Instruments – This user’s guide describes the characteristics, operation, and use of the PGA309EVM-USB evaluation module (EVM).

User's Guide
SBOU084A – February 2010 – Revised February 2011
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 ................................................................................................. 2
2 System Setup ................................................................................................................ 5
3 PGA309EVM-USB Hardware Setup .................................................................................... 16
4 PGA309EVM-USB Software Overview ................................................................................. 25
List of Figures
1 Hardware Included with the INA282-286EVM........................................................................... 3
2 PGA309EVM-USB Hardware Setup...................................................................................... 5
3 PGA309_Test_Board Block Diagram .................................................................................... 5
4 PGA309_Test_Board Schematic: Input Circuitry ....................................................................... 7
5
PGA309_Test_Board Schematic: Power, Reference, and Digital Connections .................................... 8
6 PGA309_Test_Board Schematic: Output Circuitry ..................................................................... 9
7 PGA309_Test_Board Schematic: Sensor Emulator Circuitry........................................................ 10
8 PGA309_Test_Board Connections to USB-DAQ-Platform and EEPROM......................................... 11
9 Theory of Operation For USB-DAQ-Platform .......................................................................... 16
10 PGA309EVM-USB Typical Hardware Connections................................................................... 17
11 Connecting the Two EVM PCBs ........................................................................................ 18
12 Connecting Power to the EVM........................................................................................... 19
13 Connecting the USB Cable............................................................................................... 20
14 Default Jumper Settings (PGA309_Test_Board)...................................................................... 21
15 Default Jumper Settings (USB-DAQ-Platform) ........................................................................ 22
16 PGA309EVM-USB Software: Block Diagram.......................................................................... 26
17 PGA309EVM-USB Software: Registers Tab........................................................................... 27
18 PGA309EVM-USB Software: Set-Up Cal Tab......................................................................... 28
19 PGA309EVM-USB Software: Auto Calibrate Tab ..................................................................... 29
20 PGA309EVM-USB Software: EEPROM Tab .......................................................................... 30
21 PGA309EVM-USB Software: Set-Up Cal Tab with Select Model File Dialog ..................................... 31
22 PGA309EVM-USB Software: Set-Up Cal Tab with Create Model Dialog.......................................... 32
23 PGA309EVM-USB Software: Set-Up Cal Tab with Sensor Emulator Control Tool Dialog ...................... 33
24 PGA309EVM-USB Software: Set-Up Cal Tab with Configure DMM Interface Dialog............................ 34
25 PGA309EVM-USB Software: Auto Calibrate Tab with Auto-Continue Feature Enabled ........................ 35
26 PGA309EVM-USB Software: Auto Calibrate Tab at Start of Calibration Process ................................ 36
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SBOU084A – February 2010 – Revised February 2011
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