.subckt SII2161_ideal iin vc iout
R1 iin n1 1n
V1 n1 0 0
R2 vc 0 10k

* Create output current based on the input current and the control voltage
B1 0 iout I=limit(I(V1), -1m, 1m)*2**(-5.0505*V(vc))
;B1 0 iout I=I(V1)*2**(-5.0505*V(vc))

* Limit output voltage with a specialized diode
D1 iout 0 clamp_diode
.model clamp_diode D(Ron=10 Roff=1Meg Vfwd=.1 Vrev=.1)
.ends