Automatic range switching circuit diagram PGA202


Posted on Mar 28, 2007

As shown in FIG grounds PGA202 and comparators, counters constitute automatic range switching circuit. The circuit at the output of the comparator compares VOUT when VOUT VREF


Automatic range switching circuit diagram PGA202
Click here to download the full size of the above Circuit.

10V, the comparator outputs down signal, up/down counter output 2Bit coding PGA202 of A0, A1 side to make the PGA202 gain decrease; when VOUT [1k/(1k + 10k )] 10V 0.909V, the comparator outputs l signal, up/down counter output 2Bit coding to A0, A1 end PGA202 and PGA202 make the gain increases.




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