Procedure

• Parameters.vi sweeps output channel Chan0_out from V_DD –1 to V_DD + 1 (where the design bias V_DD is set in the Front Panel). The gain measurement will be made at V_DD, intermediate to the sweep range. Since voltage V_SD is approximately equal to 2V_SG, V_SD will be relatively constant during the sweep, as is required for a reliable measurement of K_p and V_tpo.
  
  

  

• Run the VI for VDD set at 6 V and 8V and verify that Vtpo is close to the same for both VDD values. For the larger VDD (and VSD), kp (at VSD) should be slightly larger.
  
  
• Now set VDD = 6, 7, or 8 V and the File Mode switch to Green (on) and re-run to obtain a parameter data file. The file has R_D1, R_D2, k_p (technically, ) and V_tpo. The Parameters are actually for M₂. These will be read by the evaluation Mathcad file.
  
  
• The parameters can be obtained with SimParam.vi from the data saved in Parameters.vi. Paste the data from the Indicator Graph (sample, VDD = 7 V) of Parameters.vi into the Control Graph of SimParam.vi and run the VI with the Data Mode switch set to on (Green).