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

14 Summary

A flexible combined V/I output stage with adjustable output range, and full protection is presented. Table 14-1 summarizes the typical performance of the output stage

Table 14-1 Performance Specification Summary
Modes Supported mode
Voltage 0-5V, 0-10V, ±10V
Current 0-20mA, 4-20mA
Effective Resolution

Voltage mode: 17b

Current mode: 18b
Unadjusted error 0.87%FSR for 0.5%,25ppm resistors
Power supply VCC-VSS=5V to 40V
temperature -40 to 125℃
Settling time(FS) 20us resistive load
Protection Surge, OV, UV, OC