Log in to myMicrochip to access tools and benefits. Sign up in just one minute.
Maximize Your Experience: Reap the Personalized Advantages by Completing Your Profile to Its Fullest! Update Here
Stay in the loop with the latest from Microchip! Update your profile while you are at it. Update Here
Complete your profile to access more resources.Update Here!
true
AN780
| Title |
Title
15-Kilogram Scale Using the TC520 (TC500/A, TC520)
|
|---|---|
| Name |
Name
AN780
|
| Date |
Date
06/24/2015
|
| Application Categories |
Application Categories
Signal Conditioning & Measurement /
ADC
|
| Product Categories |
Product Categories
Mixed Signal /
A D Converters Dual Slope
|
| Description |
Description
A 15kg weighing scale was designed using Microchip's TC500A Analog Processor and the TC520 16-bit Controller. The scale is required to resolve down to 1/8 gram and correct to within 61/2 gram. This project takes into account all aspects of a functional scale: Dynamic Range, Strain Gauge Compensation, Zeroing, Oversampling, Units Conversion (kilograms to pounds). The TC500A is an analog processor device which performs a dual-slope analog-to-digital conversion function. All of the counting and timing for the conversion must be controlled by an external source. In nearly all applications, this control source is a microprocessor. The microprocessor is programmed to monitor the status and to control the timing of the TC500A. It must also be programmed to count the conversion results.
|