Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

comparator circuit design?

Status
Not open for further replies.
I

ithink

Junior Member level 2
Joined
Jul 1, 2005
Messages
23
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Activity points
1,468
hi, i am thinking about design of comparator,which has 5v source supply. Input voltage of comparator varies from 0 to 5v. if we consider PMOS or NMOS transistor as input, the output will not be right respective. We should consider pmos and nmos transistor as input synchronously, but i have no circuit schematic.
Could you have designed similar comparator offer some method and document to me?
thanks
ithink
 

can you describe your circuit more particularly?
there are too less information
 

hi, feier0251
In word, i wish the comparator operate both low voltage(groud) and high voltage(vhh), so input transistor of comparator should be pmos and nmos transistor. when input voltage is low, pmos transistors work;when input voltage is high, nmos transistors work.
are you clear my view?

thanks
ithink
 

use a rail to rail opa as comparator.
and you can find many paper about it in this board.
 

download John&Martin's book and Allan's book.
Both have a good chapter on comparators
 

Hi;
I agree with sunking.
you can get and reading rail-to-rail op-amp datasheet.
in some of datasheet have detailed internal schematic, and you
can investigate that circuit.

Regards
Davood Amerion
 

hi,sunking
i have designed the comparator that i need according to the rail to rail op.
thanks
best wish!
ithink
 

congratulations!
wish you be succeed!

regard
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top