[Help] Which type of OP Amp?

[shaq]

Dear all,

Can anyone tell me which type of op amp that I design can meet my spec. because I need to draw a layout?

My spec. is shown below.

 

[leomecma]

The more closer that I know are:

LM6152ACM
LM6171AIM
LM6172AMJ-QML

the prices are not well.

I found it using selector guide from national
**broken link removed**

leomecma

 

[beckchm]

why not designing a op?

because you need to draw layout.

 

[chency]

Dear all,

Can anyone tell me which type of op amp that I design can meet my spec. because I need to draw a layout?

My spec. is shown below.

a fold cascode opa is Ok,but the input output range might a difficulty,you can design a rail 2 rail opa. GL.

 

[wjxcom]

the input range is stricted, so I think folded-cascode opm is needed.

 

[shaq]

the input range is stricted, so I think folded-cascode opm is needed.

Hey! wjxcom,

Can you give me that circuit?

And, do you know what does "Sro" mean?

 

[chency]

Hope this lecture about rail to rail opa can help you ,GL

 

[beckchm]

folded cascode configuration meet your specfication

 

[Alles Gute]

You missed some key specs:
Which process will you use? How much is your supply voltage?
Regards,

 

[shaq]

You missed some key specs:
Which process will you use? How much is your supply voltage?
Regards,

Sorry, Alles.

I use TSMC 0.35µm process and Vdd=3v.

 

[xdyrick]

the baisc two stage op of gain is lower and need compensation .Folded cascode OTA the gain is hign but consume more power because it needs more bias current