May 11, 2012 #1 D didibabawu Member level 5 Joined Dec 21, 2005 Messages 90 Helped 3 Reputation 6 Reaction score 0 Trophy points 1,286 Activity points 1,851 The circuit is used in a high speed sample hold circuit. The output swing for both circuit is enough. So can any one tell me which one is better, the right or the left? Why? 3X! Last edited: May 12, 2012
The circuit is used in a high speed sample hold circuit. The output swing for both circuit is enough. So can any one tell me which one is better, the right or the left? Why? 3X!
May 11, 2012 #2 dselec Advanced Member level 1 Joined Jan 19, 2012 Messages 451 Helped 47 Reputation 94 Reaction score 47 Trophy points 1,308 Activity points 3,734 Attachment 74035...checkout the attach ment u posted from your own post first...what is this device ?
Attachment 74035...checkout the attach ment u posted from your own post first...what is this device ?
May 11, 2012 #3 D didibabawu Member level 5 Joined Dec 21, 2005 Messages 90 Helped 3 Reputation 6 Reaction score 0 Trophy points 1,286 Activity points 1,851 It's OK now. Thank you!
May 11, 2012 #4 G godfreyl Advanced Member level 5 Joined Apr 18, 2012 Messages 1,974 Helped 632 Reputation 1,266 Reaction score 621 Trophy points 1,393 Activity points 12,772 Those are output stages? The one on the left looks like an input stage, but I suppose you could use it for output. The one on the right.... I dunno. How does that one work? :???:
Those are output stages? The one on the left looks like an input stage, but I suppose you could use it for output. The one on the right.... I dunno. How does that one work? :???:
May 12, 2012 #5 D didibabawu Member level 5 Joined Dec 21, 2005 Messages 90 Helped 3 Reputation 6 Reaction score 0 Trophy points 1,286 Activity points 1,851 Suppose the dc operation point is ok and both circuit have cmfb.
May 12, 2012 #6 G godfreyl Advanced Member level 5 Joined Apr 18, 2012 Messages 1,974 Helped 632 Reputation 1,266 Reaction score 621 Trophy points 1,393 Activity points 12,772 OK, so you want balanced output like this? I didn't think that would be useful for a sample and hold circuit. Anyway, I think both circuits can have the same speed. Implementation of cmfb will be different though, so a lot depends on the first stage. ---------- Post added at 08:08 ---------- Previous post was at 08:06 ----------
OK, so you want balanced output like this? I didn't think that would be useful for a sample and hold circuit. Anyway, I think both circuits can have the same speed. Implementation of cmfb will be different though, so a lot depends on the first stage. ---------- Post added at 08:08 ---------- Previous post was at 08:06 ----------
May 12, 2012 #7 D didibabawu Member level 5 Joined Dec 21, 2005 Messages 90 Helped 3 Reputation 6 Reaction score 0 Trophy points 1,286 Activity points 1,851 godfreyl said: OK, so you want balanced output like this? I didn't think that would be useful for a sample and hold circuit. Anyway, I think both circuits can have the same speed. Implementation of cmfb will be different though, so a lot depends on the first stage. ---------- Post added at 08:08 ---------- Previous post was at 08:06 ---------- Click to expand... Thank you godfreyl, the pic was wrong and was modified.
godfreyl said: OK, so you want balanced output like this? I didn't think that would be useful for a sample and hold circuit. Anyway, I think both circuits can have the same speed. Implementation of cmfb will be different though, so a lot depends on the first stage. ---------- Post added at 08:08 ---------- Previous post was at 08:06 ---------- Click to expand... Thank you godfreyl, the pic was wrong and was modified.
May 12, 2012 #8 dselec Advanced Member level 1 Joined Jan 19, 2012 Messages 451 Helped 47 Reputation 94 Reaction score 47 Trophy points 1,308 Activity points 3,734 With the limited info u give about vbn both circuits r the same although the left having -vbn allows u to get tri-state action
With the limited info u give about vbn both circuits r the same although the left having -vbn allows u to get tri-state action
May 12, 2012 #9 D didibabawu Member level 5 Joined Dec 21, 2005 Messages 90 Helped 3 Reputation 6 Reaction score 0 Trophy points 1,286 Activity points 1,851 dselec said: With the limited info u give about vbn both circuits r the same although the left having -vbn allows u to get tri-state action Click to expand... Suppose all the transistors are in satuation region.
dselec said: With the limited info u give about vbn both circuits r the same although the left having -vbn allows u to get tri-state action Click to expand... Suppose all the transistors are in satuation region.