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Published byClinton Bollard Modified over 2 years ago

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**Riso with Dual Feedback Plus RFx Op Amp Stability OPA192 Definition-by-Example**

Collin Wells Tim Green Precision Linear Analog Applications December 2, 2013

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**Riso with Dual FB plus FX Topology**

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Zo Test

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Zo Test

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Zload on Aol

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Modified Aol

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Modified Aol

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**FB#1 with CL=10uF, Riso=37.4ohms**

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**FB#1 with CL=10uF, Riso=37.4ohms**

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**FB#1 with CL=10uF, Riso=37.4ohms Add FB#2 for Stability**

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**FB#2 with CL=10uF, Riso=37.4ohms, RF=1k, RFx=10k**

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**FB#2 with CL=10uF, Riso=37.4ohms, RF=1k, RFx=10k**

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**Loop Gain for CL=10uF, Riso=37.4ohms, RF=1k, RFx=10k**

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**Loop Gain for CL=10uF, Riso=37.4ohms, RF=1k, RFx=10k**

Phase Margin = deg

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**Transient for CL=10uF, Riso=37.4ohms, RF=1k, RFx=10k**

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**Transient for CL=10uF, Riso=37.4ohms, RF=1k, RFx=10k**

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