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how to construct a PTAT current source using only the output voltage of the bandgap ? (can't use any of the internal nodes of the bandgap cell. Only it's output.)
How to construct a PTAT bias current ?You can only using the output of a bandgap,but you can't use any node inside the bandgap?
How to implement it ? I can't achieve this achieve by not using the bias current node of the bandgap amplifier?
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