SBOA441 October   2020 OPA192 , OPA2192

 

  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-1WQS-58ZT-X5JW8JDGRV4V-low.png

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

    Equation 1. GUID-20201007-CA0I-DWTC-7QSS-LSTR0RLTJ303-low.gif
    Equation 1. GUID-20201007-CA0I-LLL5-R9SG-1LN9W7DNZPWC-low.gif

  2. Ensure Vout for both op amps are within their voltage output swing from rails (Vout_Min, Vout_Max) at a specific output current specified in the data sheet.The following formula can be used to calculate U1_Vout for U1 OPA192. U2_Vout for U2 OPA192 will be Vload.

    Equation 1. GUID-20201007-CA0I-XVG3-FCCS-MSTPZLDRX1VL-low.gif
    Equation 1. GUID-20201007-CA0I-NMDP-JVTS-5NVLQRHJXDBD-low.gif