Other Parts Discussed in Thread: TINA-TI
during simulating open-loop characteristics the OPA171 in simple inverting configuration I found different results when using TINA-TI and LTSpice. After some investigation I found potential discrepancy in the OPA171 SPICE model (Final 1.1, 2019).
It seems that the name of the internal node "en_n" is used inconsistently. In some cases the "en_n" node is replaced with "N049" node but not everywhere. Here are the suspicious lines:
C_DIFF en_p N049 3e-12
C_CMn N049 MID 3e-12
C_CMp MID en_p 3e-12
R52 MID en_p R_NOISELESS 1T
R53 N049 MID R_NOISELESS 1T
R34 en_p IN+ R_NOISELESS 1e-3
R35 N049 IN- R_NOISELESS 1e-3
Xi_np en_n MID FEMT_OPA171 //looks like here should be "en_p"
Xi_nn N049 MID FEMT_OPA171
Could you please verify the above lines and overall correctness of the OPA171 SPICE model?