1. Tim Green, MGTS Precision Linear Analog Applications January 8, 2015
OPA316 Cap Drive
Tim Green, MGTS
Precision Linear Analog Applications
January 8, 2015

2. OPA316 Zo Test

3. OPA316 Zo Test

4. Zload Test

5. Zload & Zo Difference in slopes = 20dB/decade implies
no resonance between Zo and Zload
which makes stability compensation possible

6. OPA316 Modified Aol Test

7. OPA316 ModAol, FB#1 and where to add FB#2

8. OPA316 Final Loop Gain Test

9. OPA316 Final Loop Gain Test
Phase Margin = 62 degrees

10. OPA316 Square Wave Transient Stability Test

11. OPA316 Square Wave Transient Stability Test

12. OPA316 Square Wave Transient Stability Test

13. OPA316 Closed Loop Transient AC

14. OPA316 Closed Loop Transient AC

15. OPA316 Recommended Circuit for Real World Protection
DA_DB divert any real world transients around op amp output into Vcc supply or Ground.
TVS1 absorbs any real world positive transients since positive LDO can only source current and not sink current.

16. For Op Amp Stability Primer:
Note:
Appendix 13 covers the Riso with Dual Feedback compensation
technique used in this application.

17. Free SPICE Simulator from TI:
All schematics embedded in this presentation can be run using TINA-TI
available at this link: