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Type: Posts; User: jonr

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  1. Here is some very general advice. Learn the...

    Here is some very general advice. Learn the basics of LTSpice and use it, even for simple circuits. Never perfect, but it's a great way to learn things like "what would happen if I injected a...
  2. > a virtual GND of 1.65V and power the AD8224...

    > a virtual GND of 1.65V and power the AD8224 with +-3.3V)?

    You would want the AD8224 to operate without a virtual ground. And the 2nd stage needs power too. Probably not worth the changes,...
  3. You could also add an inverting charge pump - the...

    You could also add an inverting charge pump - the AD8224 will run on 3.3V and -3.3V.
  4. Your first graph has a scale that goes negative. ...

    Your first graph has a scale that goes negative. But in single ended mode, the output of the ADC is unsigned. Mix up signed and unsigned and you get strange jumps at 32767.
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