AN1711 datasheet(16/40 Pages) STMICROELECTRONICS

Part #	AN1711

Description	SOFTWARE TECHNIQUES FOR COMPENSATING ST7 ADC ERRORS

PDF	40 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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SOFTWARE TECHNIQUES FOR COMPENSATING ST7 ADC ERRORS

Comments

1. The Histogram technique requires lot of RAM for storing the data.

2. It takes a lot of time to process the data to find the outlier conversion results caused by

noise.

3. This technique is mostly used to analyze ADC performance and not in the final application

because of the above disadvantages.

4. If the outlier results caused by noise are symmetrically placed around the expected result

then the averaging technique can be as good as the histogram technique.

5. If the results received do not vary much, then it is better to use averaging.

Algorithm improvement

The histogram technique algorithm can be further improved by not storing the converted

values. Instead, an array can hold the number of occurrences of each result as an offset from

the first digital value. If the first conversion is disturbed by noise, then the array size limitation

will be a problem.

AN1711 Datasheet(PDF) 16 Page - STMicroelectronics