Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic 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

The effect of non-linearity of op-amp gain on the performance of ADC

Status
Not open for further replies.

yalanand

Junior Member level 2
Joined
Aug 13, 2007
Messages
24
Helped
2
Reputation
4
Reaction score
1
Trophy points
1,283
Activity points
1,453
Hi can anyone explain me the effect of non-linearity of op-amp gain on the performance of ADC ?
 

yalanand

Junior Member level 2
Joined
Aug 13, 2007
Messages
24
Helped
2
Reputation
4
Reaction score
1
Trophy points
1,283
Activity points
1,453
Re: Query regarding ADC

Sigma delta ADC.. am planning to design 12 Bit sigma delta ADC for 100MHZ
 

A.Anand Srinivasan

Advanced Member level 5
Joined
Oct 15, 2005
Messages
1,804
Helped
257
Reputation
514
Reaction score
39
Trophy points
1,328
Location
India
Activity points
10,680
Re: Query regarding ADC

are you talking about the integrator formed using the opamp in sigma-delta ADC????

the nonlinearity would be taken care by the feedback loop because it is the one which determines the gain provided the open loop gain is very high....
 

yalanand

Junior Member level 2
Joined
Aug 13, 2007
Messages
24
Helped
2
Reputation
4
Reaction score
1
Trophy points
1,283
Activity points
1,453
Re: Query regarding ADC

Yeah.. but how do i take care the non-idealities because of non-linear op-amp gain.. ?
 

A.Anand Srinivasan

Advanced Member level 5
Joined
Oct 15, 2005
Messages
1,804
Helped
257
Reputation
514
Reaction score
39
Trophy points
1,328
Location
India
Activity points
10,680
Re: Query regarding ADC

actually it is not at all needed if you are using a opamp with high open loop gain because you are having feedback..... and you will be using it in integrator and so just design or select opamp to have high gain that is all.....
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top