Texas Instruments PGA309EVM-USB manual Users Guide

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		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: Registers Tab		26
17	PGA309EVM-USB Software: EEPROM Tab		27
18	PGA309EVM-USB Software: Block Diagram		28
19	PGA309EVM-USB Software: Auto Calibrate Tab— Sensor Definition		29
20	PGA309EVM-USB Software: Sensor Emulator Control Panel Tool		30
21	PGA309EVM-USB Software: Auto Calibrate Tab— PGA Setup		31
22	PGA309EVM-USB Software: Auto Calibrate Tab— Two-Point Calibration and Linearization		32
23	PGA309EVM-USB Software: Auto Calibrate Tab— Temperature Error Compensation		33
24	PGA309EVM-USB Software: Auto Calibrate Tab— Post Cal Error Check		34
25	PGA309EVM-USB Software: Auto Calibrate Tab— DMM Options		35
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SBOU084 –February 2010		PGA309EVM-USB	1
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