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04 11th, 2008| 
Chapter 7: A/D Converter
* Introduction
* 7.1 12-bit A/D converter
* 7.1.1 A/D conversion sequence
* 7.1.3 A/D converter configuration
* 7.1.3 Starting A/D conversion process – start of the sampling process
* 7.1.4 Stopping sampling and starting conversions
* 7.1.5 External event trigger conversion start
* 7.1.6 Controlling sample/conversion operation
* 7.1.7 Writing conversion results into the buffer
* 7.1.8 A/D sampling requirements
* 7.1.9 Reading the A/D result buffer
* 7.1.10 Operation during SLEEP and IDLE modes
* 7.1.10 Operation during SLEEP and IDLE modes
Introduction
A/D (Analogue-to-Digital) converter is a “mixed signal” circuit which performs digitization of the external analogue signals. In the dsPIC30F family there are two microcontroller versions one with 10-bit and the other with 12-bit A/D converter. It has been shown in practice that for the control or regulation systems the 10-bit A/D converters gave satisfactory solutions. The additional bits in the A/D converters in these applications are almost unsuable because they are masked by the high levels of electro-magnetic noise. In the measuring systems the practice showed that with the 12-bit converters one could achieve a good compromise between the sampling rate and accuracy (0.02% for a 12-bit converter).
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