User's Guide
SBAU125A – August 2007 – Revised September 2007
ADS1230REF User's Guide
The ADS1230REF is a reference design for the
ADS1230
20-bit, delta-sigma analog-to-digital converter
(ADC). It contains all the circuitry and user interface elements needed for a weigh-scale digitizer, and is
meant as an example of good design for a basic weigh-scale system. The ADS1230REF is also suitable
for general evaluation of the ADS1230 device.
The ADS1230REF hardware has the following features:
•
ADS1230 ADC
•
Connections for load cells or other voltage sources
•
Low-side excitation switch on the load cell header connector
•
Ample EMI/RFI suppression between the ADC and rest of design
•
Eight-digit starburst LCD readout
•
USB connection for firmware updates and remote control
•
Designed for very low power consumption
•
Battery (9V) or wall power
Version 1.1.0 of the firmware includes the following features:
•
Weigh-scale mode with two-point calibration
•
Complete configuration of the device
•
Real-time peak-to-peak and RMS noise calculation
•
Autoranging voltage display
•
Noise displayed in volts, codes, and bits
•
Voltage displayed in volts or codes
•
Adjustable averaging mode
•
Raw hexadecimal code display
•
Simple and fast configuration
•
Parameters saved to internal flash memory
•
Computer link
Graphical PC software is also provided for histogram display, datalogging, and device control.
We welcome bug reports and suggestions for additional features; please contact the Texas Instruments
Precision Analog Applications Group.
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SBAU125A – August 2007 – Revised September 2007
ADS1230REF User's Guide
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