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Why Band gap reference is named so..... What is the reason?

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thirupathik

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Why Band gap reference is named so..... Whatt is the reason? Can anybody give the reply.
 

They are named so because the voltage generated is at a 1st aproximation proportional only to the bandgap of silicon. That is the energy gap between the valence and conduction band
 

Re: Why Band gap reference is named so..... What is the reas

at T=0 the volgate is the value of band gap of si .
hennce name bandgap voltage
 

Re: Why Band gap reference is named so..... What is the reas

thirupathik said:
Why Band gap reference is named so..... Whatt is the reason? Can anybody give the reply.
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Band gap is the electric potential between Si bands, and it is a constant which is not change with PVT.
So we can get a reference voltage by that.
 

Re: Why Band gap reference is named so..... What is the reas

Hay, In my view energy gap between the valence and conduction band for silicon is 1.1V to 1.2V. If you design voltage reference circuit for this voltage range then you can say, it is bandgap refernce(BGR) circuit.
 

Re: Why Band gap reference is named so..... What is the reas

Thanks for your clarifications. Now I got the correct answer.
 

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