What is the most commonly used rail-to-rail OP structure??

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zhangjavier

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Can anyone give me a hint?
 

Re: What is the most commonly used rail-to-rail OP structure

zhangjavier said:
Can anyone give me a hint?
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In book <<Designing Analog Chips>>
page 8-14,Fig.8--22:Op-amp with rail-to-rail inputs and output.

Maybe this can help.
 

Re: What is the most commonly used rail-to-rail OP structure

[quote="holddreamsIn book <<Designing Analog Chips>>
page 8-14,Fig.8--22:Op-amp with rail-to-rail inputs and output.

Maybe this can help.[/quote]
That is:
 

Re: What is the most commonly used rail-to-rail OP structure

Also Willy Sansen's slices provide more examples.
 

Re: What is the most commonly used rail-to-rail OP structure

I know there are many structures such as current switch, DC shifting, e.g.

Now I am going to design a rail-to-rail op, I want to know which one is the most commonly used . So i will design my own op using this structure.

Added after 2 hours 8 minutes:


I can't find this book in this forum. Any links available ??
 

the opa with complementary input and class ab output will be rail-to-rail input and output

Added after 2 minutes:

The configuration proposed by DZC cannot be used as fully differential one.
 

Re: What is the most commonly used rail-to-rail OP structure

The configuration proposed by DZC can be used as fully differential architecture.
only else add a class ab control loop and cmfb circuit.
You can reference the book "Design of low-voltage,low power operational amplifier cells" by Ron Hogervorst & Johan H.Huijsing
 

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