SBOA594 August   2024 OPA2990

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Circuit Description
  6. 3 Supporting Multiple Output Ranges
  7. 4 Resistor Sizing, M2 Selection, and Other Design Considerations
  8. 5 Mode and Range Control
  9. 6 Supply Level for Current Output
  10. 7 Supply Levels for Voltage Output
  11. 8 Protection Features
  12. 9 Measurement Results
  13. 10Power Consumption
  14. 11Error Monte-Carlo Analysis
  15. 12Rise and Fall Times
  16. 13Building Multi-Channel Output
  17. 14Summary
  18. 15References

12 Rise and Fall Times

Full scale rise and fall times for bipolar voltage output are below 15us as shown in Figure 12-1.

Rise and fall times for current mode is below 20us for either 0-20mA or 4-20mA modes as shown in the following figures.

Risetime, Bipolar VoltageFigure 12-1 Risetime, Bipolar Voltage
Risetime, Current ModeFigure 12-3 Risetime, Current Mode
Falltime, Bipolar VoltageFigure 12-2 Falltime, Bipolar Voltage
Falltime, Current ModeFigure 12-4 Falltime, Current Mode