SBOA436 October   2020 OPA192

 

  1.   Design Goals
  2.   Design Description
  3.   Design Notes
  4.   Design Steps
  5.   Design Simulations
  6.   DC Simulation Results
  7.   Design References
  8.   Design Featured Op Amp
  9.   Design Alternate Op Amp

Design Steps

GUID-20200916-CA0I-RQF8-NGBL-R7W1DKD89ZZ3-low.png

  • Calculating gain (G) for a given Iload and shunt resistor:

    Equation 1. GUID-20201007-CA0I-BWQF-0043-GZGVXJXLTFGM-low.gif
    Equation 1. GUID-20201007-CA0I-WKVN-TM02-D000BWHGWFKJ-low.gif

  • Ensure Vout is within the voltage output swing from rails (Vout_Min, Vout_Max) of the op amp at a specific output current specified in the data sheet of the op amp:

    Equation 1. GUID-20201007-CA0I-GMMR-ZNBL-LLCTJSXBWCHN-low.gif
    Equation 1. GUID-20201007-CA0I-NNZ2-33DC-0J4Z5FCFPD7Q-low.gif