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Nexxim Simulator >
Nexxim Component Models >
Switches >
Current-Controlled Switch, SPDT

Current-Controlled Switch, SPDT

Netlist Format

An instance of a current-controlled single-pole, double throw switch has the netlist syntax:

Gxxx ( n1 n2 n3 ) ISPDT PROBE=name [ROFF=val] [RON=val] [IOFF=val] [ION=val] [AREA=val]

n1 is the input node, n2 is the “OFF” output node, n3 is the “ON” output node, n4 and n5 are the control nodes. The parentheses are required around the list of node names. The entry ISPDT identifies the element as a current-controlled SPDT switch.

**Current-Controlled Switch, SPDT Instance Parameters**
Parameter	Description	Units	Default
ROFF	Off resistance	Ohm	1e6
RON	On resistance	Ohm	1.0
IOFF	Control current for off state	Ampere	0.0
ION	Control current for on state	Ampere	1.0
AREA	Area scaling factor	None	1.0
PROBE	Name of the controlling current probe or voltage source	None	None

Netlist Example

v1 c1 0 SIN(0 10 1e6) // Control source

R1 c1 0 1

Vn1 n1 0 10

Rn2 n2 0 10

Rn3 n3 0 10

G1 (n1 n2 n3) ispdt probe=v1

Notes

1. In normal operation, ION is greater than IOFF. Output node n2 is selected whencontrol current IC is less than or equal to IOFF, and output node n3 is selected when IC is greater than or equal to ION.

2. In inverted operation, IOFF is greater than ION. Output node n2 is selected when IC is greater than or equal to IOFF, and output node n3 is selected when IC is less than or equal to ION.