1. Riso with Dual Feedback Plus RFx Op Amp Stability OPA192 Definition-by-Example
Collin Wells
Tim Green
Precision Linear Analog Applications
December 2, 2013

2. Riso with Dual FB plus FX Topology

3. Zo Test

4. Zo Test

5. Zload on Aol

6. Modified Aol

7. Modified Aol

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

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

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

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

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

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

14. Loop Gain for CL=10uF, Riso=37.4ohms, RF=1k, RFx=10k
Phase Margin = deg

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

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