How to improve the linearity of an op-amp?

Status
Not open for further replies.
M

mlkang

Newbie level 1
Joined
Nov 14, 2007
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,289
Hi all,

How to improve the linearity of an op-amp.I think there should be
many methods,but I don't know it clearly.
Anyone can show me the methods used commonly?
Or some paper about it.

THX
 

opamp and linearity

try to study this book:

Op Amps for Everyone by Ron Manchini

**broken link removed**
 

Re: Linearity of OP-amp

thanks
drming said:
try to study this book:

Op Amps for Everyone by Ron Manchini

**broken link removed**
Click to expand...
 

Re: Linearity of OP-amp

mlkang said:
Hi all,

How to improve the linearity of an op-amp.I think there should be
many methods,but I don't know it clearly.
Anyone can show me the methods used commonly?
Or some paper about it.

THX
Click to expand...

i think 2 ways can help:

1. Through negative feedback, it provide more linearity to the opamp.

2. Make sure when design opmap, the current mirror is in ratio.
 

Linearity of OP-amp

At the first All you tranasistors must be in saturation. Non-lineriaty caused with changing output resistance of transistor. This occur even transistor in saturation. Because MOS has length-modulation effect. As sad surianova, you mast use local feedback to stabilize operation points. Output stage added a lot of non-lineriaty.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…