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Nexxim Simulator >
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Voltage-Controlled Current Source, Linear

Voltage-Controlled Current Source, Linear

Linear VCCS Netlist Format

The format for a linear voltage-controlled current source (VCCS) is:

Gxxxx out+ out- [VCCS] in+ in- [TRANS=]transconductance

[MAX=val] [MIN=val] [M=val]

[SCALE=val] [TC1=val] [TC2=val] [ABS=0|1]

out+ is the positive node and out- is the negative node of the current source. VCCS is the default for the G element type. in+ and in- are the positive and negative nodes for the control voltage drop.

The functional equation for the linear VCCS is:

I(out+, out-) = TRANS ´ (V(in+) - V(in-)) ´ SCALE ´ (1 + DT ´ TC1 + DT² ´ TC2)

If the result is less than MIN,

I(out+, out-) = MIN

If the result is greater than MAX,

I(out+, out-) = MAX

**Linear VCCS Instance Parameters**
Parameter	Description	Unit	Default
ABS	When ABS=1, output is an absolute value	None	0
M	Number of elements in parallel	None	1.0
MAX	Maximum output current	Amp	None
MIN	Minimum output current	Amp	None
SCALE	Multiplier for current	None	1.0
TC1	Linear (1st-order) temperature coefficient	°K^-1	0.0
TC2	Quadratic (2nd-order) temperature coefficient	°K^-2	0.0
TRANS	Transconductance of the voltage-to-current conversion	Mho	1.0

Linear VCCS Netlist Example

G20 42 0 VCCS 12 34 TRANS=0.004

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