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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN1711 датащи(PDF) 35 Page - STMicroelectronics |
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AN1711 датащи(HTML) 35 Page - STMicroelectronics |
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35 / 40 page  35/40 SOFTWARE TECHNIQUES FOR COMPENSATING ST7 ADC ERRORS 5 SOFTWARE The software available with this application note is provided in C language. The software is provided for guidance and you can use it directly or change it to meet your requirements. For demonstration and easy usability, some parts of the code are repeated. For example, aver- aging etc.) is tested on ST72F324 and ST72F521 but it can be used with other ST7 devices also. The software covers the following techniques. Table 3. General techniques for improving ADC accuracy Table 4. Noise reduction techniques Table 5. Calibration techniques 5.1 FILE PACKAGE The package provided with this application note contains the workspace, make-files and the source code. You can include ADC_tech.c and ADC_tech.h in your workspace to use the ADC software techniques. No. Software technique Software available 1 Averaging Yes 2 Averaging using queue implementation Yes 3 Histogram technique Yes 4 Noise filtering technique Yes No. Noise Reduction technique Software available 1 Using Slow mode Yes 2 Inserting NOPs Yes 3Using WFI mode Yes 4 Executing code from RAM Yes No. Calibration technique Software available 1 Use of accurate voltage reference No 2 Use of external DAC No 3 Maintaining lookup table No 4 Using Linear compensation No 5 Zone compensation Yes 6 Autocalibration of offset and gain errors Yes |
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