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hi,
Look thru these links for idea's
https://www.google.co.uk/search?q=5...s=org.mozilla:en-GB:official&client=firefox-a
Hello,
If you are going to use a micro controller chip anyway then you dont really need a 555, you can use a comparator instead, or perhaps a comparator on the uC chip itself. The idea is to build a Delta Sigma A to D converter.
I've worked on the design of SD converters and they may appear simple, but the theory behind them is not. If you want to understand A/D converters that's not the place to start.Well, the SD is a simple converter, in fact that's why it's used for various things.
I have looked around the web. It's used primarily where you want low frequency, high accuracy conversion.It's simple and cheap, it's as simple as that. Look around on the web.
The theory isnt that hard either i dont know where you got that idea from.
Well, I understand where you are coming from. It's certainly true that a SD converter is more like the 555 converter he mentioned (but still significantly different) than other types of converter architectures.Hi Carl,
Well although you may have a point there dont we have to consider that he was starting out with a 555 for an AD converter? Wouldnt that be a somewhat similar way? Or maybe you are saying that is too hard to understand too...in that case i would go for the simplest which is a voltage divider and set of comparators. But it appeared to me that he wanted to understand the way the 555 does it or similar, but then other people started suggesting other converters.
If it's the simplest possible converter than i would say a resistor divider and set of comparators, but that is gong to be nothing like how the 555 works for A to D.