sunbeam
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the bootstrapped technique(fig.1) can enhance the gain in the ota application. but the bootstrap introduces a positive feedback loop in the ota. How about its stability?
If the closed loop negative feedback is strong enough to overcome the positive feedback introduced by bootstrap, is the ota stable?
then fig.2 is the active bootstrapped technique. It can also enhance the ota gain. In the open loop, there are both positive and negative feedback. They are equal in the ideal situation. But the non-ideal interferance easily causes the non-stablity. So i am puzzled.
Thank you advance!
If the closed loop negative feedback is strong enough to overcome the positive feedback introduced by bootstrap, is the ota stable?
then fig.2 is the active bootstrapped technique. It can also enhance the ota gain. In the open loop, there are both positive and negative feedback. They are equal in the ideal situation. But the non-ideal interferance easily causes the non-stablity. So i am puzzled.
Thank you advance!