commit c3275454ecf38037dcab56459fac974aa6ac0b61
Author: Gerardo Marx <gmarx_cc@itmorelia.edu.mx>
Date:   Thu Apr 14 10:55:49 2022 -0500

    opamp model

diff --git a/mymodel.mod b/mymodel.mod
new file mode 100644
index 0000000..8e15c0b
--- /dev/null
+++ b/mymodel.mod
@@ -0,0 +1,16 @@
+* OPAMP MACRO MODEL, SINGLE-POLE
+* connections:      non-inverting input
+*                   						|   inverting input
+*                   						|   |   output
+*                   						|   |   |
+.SUBCKT newOpamp     1   2   3
+* INPUT IMPEDANCE
+RIN	1	2	10MEG
+* DC GAIN (100K) AND POLE 1 (10HZ)
+EGAIN	3 0	1 2	100K
+RP1	3	4	1K
+CP1	4	0	15.915UF
+* OUTPUT BUFFER AND RESISTANCE
+EBUFFER	5 0	4 0	1
+ROUT	5	6	10
+.ENDS