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

output swing of an OTA

Status
Not open for further replies.

r@m$

Junior Member level 3
Joined
Jun 8, 2011
Messages
25
Helped
3
Reputation
6
Reaction score
3
Trophy points
1,283
Activity points
1,439
hiii....

I have to find the output swing of an OTA.

But the required specification has two limits mentioned as 600m-1.2v
I am confused..:????:
I know how to find the maximum output swing,..
BUT how can I find the lower limit of it?????
 

LvW

Advanced Member level 5
Joined
May 7, 2008
Messages
5,819
Helped
1,738
Reputation
3,478
Reaction score
1,337
Trophy points
1,393
Location
Germany
Activity points
39,070
Without a long brain-storming I think: lowest output amplitude is zero.
 

r@m$

Junior Member level 3
Joined
Jun 8, 2011
Messages
25
Helped
3
Reputation
6
Reaction score
3
Trophy points
1,283
Activity points
1,439
But in my circuit specifications it is given that output swing is 600mV-1.2 V

then what does it mean??
 

FvM

Super Moderator
Staff member
Joined
Jan 22, 2008
Messages
47,666
Helped
14,078
Reputation
28,413
Reaction score
12,742
Trophy points
1,393
Location
Bochum, Germany
Activity points
276,928
If the output stage is formed by simple non-cascoded MOS current mirrors, it can acieve rail-to-rail output, with current reduction according to the MOS saturation characteristic. To calculate the undistorted ouput swing, you would need to know the transistor parameters.
 

erikl

Super Moderator
Staff member
Joined
Sep 9, 2008
Messages
8,112
Helped
2,687
Reputation
5,354
Reaction score
2,284
Trophy points
1,393
Location
Germany
Activity points
44,153
But in my circuit specifications it is given that output swing is 600mV-1.2 V
then what does it mean??
I think this means the OTA should achieve a linear ("undistorted") output range between these 2 given limits. Instead of a max. distortion level value, also a (-)3 or 6dB OTA gain drop could define such output range limits. Additionally, the output load should be specified.
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top