anyong can give a detail circuit about two current source

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xiongshoufen

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one current source is propportional to absolute temperature, another is negative temperature coefficient. and there are only bipolar transistors in the circuit. in other words , there can not be mos transistor in the circuit.
thanks
 

Search for bandgap references.
 

Re: anyong can give a detail circuit about two current sour

i think the answer to ur question will be in the allen holberg book
 

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