What is op amp bootstrapping?

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#1 21668630 20 Jun 2013 10:41

Sankalp Gitaje Sankalp Gitaje

Anonymous

Post #1
21668630 20 Jun 2013 10:41

can anyone suggest how to implement op amp bootstrapping for wide range of supply voltage?
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#2 21668631 21 Jun 2013 01:40

Rohit Dubla Rohit Dubla

Anonymous

Post #2
21668631 21 Jun 2013 01:40

I think it is about making the op-amp's supply rails modulate according to the o/p voltage. The o/p of the circuit is coupled back to the supply rails via a diode-transistor combination such that it allows the o/p to swing to the full supply voltage whilst keeping the overall supply to the op-amp within its specification. In effect the supply to the op-amp is floating and varies according to the o/p voltage.

See this for an example: http://sound.westhost.com/articles/dwopa3.htm#pwr
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#3 21668632 21 Jun 2013 07:32

Sankalp Gitaje Sankalp Gitaje

Anonymous

Post #3
21668632 21 Jun 2013 07:32

Thnx Rohit..
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#4 21668633 21 Jun 2013 12:16

DAVID CUTHBERT DAVID CUTHBERT

Anonymous

Post #4
21668633 21 Jun 2013 12:16

here is a link that expounds on what Rohit Dubla says...

http://www.edn.com/design/analog/4361336/Bootstrapping-your-op-amp-yields-wide-voltage-swings
#5 21668634 05 Jul 2013 12:27

mark Spend mark Spend

Anonymous

Post #5
21668634 05 Jul 2013 12:27

Hey Guys well I don't see the objective of bootstrapping with a cost firm. You have Cf/Rf they are dimension according to the designed exchange function.Thanks!!
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