SLOA059B October   2022  – March 2023 OPA2991 , TLC2654 , TLC4502 , TLE2021 , TLV2721

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Input Offset Voltage Defined
  5. 3Cause of VOS
  6. 4VOS and Temperature Drift in the Major Device Types
    1. 4.1 Bipolar
    2. 4.2 JFET
    3. 4.3 CMOS
  7. 5Manufacturer Measurement, Trim, and Specification of VOS
    1. 5.1 Measurement
    2. 5.2 Trim
    3. 5.3 Specifications
  8. 6Impact of VOS on Circuit Design and Methods of Correction
    1. 6.1 AC Coupling
    2. 6.2 DC Feedback
    3. 6.3 Internal Calibration
  9. 7Summary
  10. 8References
  11. 9Revision History

5 Manufacturer Measurement, Trim, and Specification of VOS

The salient DC parameters for any device are printed in the data sheet. To fully understand the specifications on the data sheet, it is necessary to understand the methods used by the manufacturer to measure and then trim (reduce) VOS. This section briefly explains how the measurement and trim process is performed. It then explains and provides examples of the specifications for various devices.