Evaluation Board User Guide
UG-223
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Te l: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluation Board for the AD7193, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta (Σ-Δ) ADC
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 20
FEATURES
Full-featured evaluation board for the AD7193
PC software for the control of the AD7193 using a
USB interface
Various linking options
INTRODUCTION
This user guide describes the EVAL-AD7193EBZ evaluation
board. The AD7193 is a 4.8 kHz, ultralow noise, 24-bit Σ-Δ ADC.
The AD7193 is a complete analog front end for low frequency
measurement applications. It contains four differential inputs/
8 pseudo differential inputs and includes a low noise instrumentation
amplifier, reference detect, and a low side power switch.
Full data on the AD7193 is available in the AD7193 data sheet
available from Analog Devices, Inc., and should be consulted in
conjunction with this user guide when using the evaluation board.
GENERAL DESCRIPTION
The AD7193 evaluation kit is a powerful tool for exploring and
evaluating the AD7193 features.
When the board is connected to (and possibly powered from) a
PC via a standard USB interface, the PC software allows for
• The graphical display of real-time data and logs this data
into a text file.
• The modification of the internal settings of the AD7193.
This software also helps in understanding the part features and
performance.
Finally, the flexible interface structure of the board allows it to
be connected in a number of useful configurations. For example,
the digital section of the evaluation board can be used
independently as a convenient digital interface for a user’s own
sensor design printed circuit board (PCB) or module containing
the AD7193. Alternatively, an external microcontroller can be
interfaced to the AD7193, and the evaluation board can act as a
complete analog front end for creating and debugging software
on the digital platform of the user.
AD7193 EVALUATION BOARD
VOLTAGE
REFERENCE
ANALOG
INPUTS
SPI/USB
INTERFACE
REFIN
VOLTAGE
REGULATOR
EXT
AD7193
NOISE TEST
CIRCUITRY
PC
AND
LabVIEW™
BASED
SOFTW ARE
09552-001
Figure 1.
UG-223 Evaluation Board User Guide
Rev. 0 | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
Introduction ...................................................................................... 1
General Description ......................................................................... 1
AD7193 Evaluation Board ............................................................... 1
Revision History ............................................................................... 2
Evaluation Board Hardware ............................................................ 3
Power Supplies .............................................................................. 3
Sockets ........................................................................................... 3
Noise Test ....................................................................................... 3
Using an Absolute Reference ...................................................... 3
Connecting the AD7193 to an External Microcontroller ....... 3
Using the AD7193 Evaluation Board with the PC Software ....... 4
Software Installation .................................................................... 4
Evaluation Software Installation .................................................4
Evaluation Board Installation ......................................................4
Using the Evaluation Board Software .........................................4
Main Window ................................................................................5
ADC Setup .....................................................................................7
Configuration Assist Tool ............................................................8
Fast 50Hz Quick Test ....................................................................9
Low Noise Quick Test ................................................................ 10
User Units Setup ......................................................................... 11
Evaluation Board Schematics and Artwork ................................ 12
Ordering Information .................................................................... 16
Bill of Materials ........................................................................... 16
REVISION HISTORY
12/10—Revision 0: Initial Version