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

How to make ideal opamp fully differential ?

Status
Not open for further replies.
C

chencanfeng

Newbie level 4
Joined
Mar 27, 2009
Messages
6
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,311
I think there is something wrong in the circuits?
the opamp is from cadence ahdlLib,both of the gain and GBW are set to 69dB and 400M.the ac result is ok,but this fully differential opamp cant work in my loop?
is anything wrong ?
 

Attachments

  • QQ截图未命名.jpg
    QQ截图未命名.jpg
    65.1 KB · Views: 117
  • QQ截图未命名1.jpg
    QQ截图未命名1.jpg
    276.7 KB · Views: 105

chencanfeng said:
... this fully differential opamp cant work in my loop?
Click to expand...
Why can't it? What is wrong? If you need a feedback loop, use differential feedback from VOUTP to VINN, and from VOUTN to VINP.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top