* Copyright © Linear Technology Corp. 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005.  All rights reserved.
*
.subckt 2ndOrderNotch 1 2
G1 0 N002 1 0 {4/R1}
R1 N002 0 {R1/2}
R2 N003 N002 {R1/2}
R3 N003 0 {R1}
C1 N003 0 {C1} Lser={L1}
G2 0 2 N003 0 {10*H}
R4 2 0 .1
.param R1=1k
.param L1=R1*Q/(4*pi*f0)
.param C1=1/(L1*(2*pi*f0)**2)
.ends 2ndOrderNotch