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Re: "E" model scrypt style of spice file for ADG508F

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Hi Sofy,

 

I'd like to clarify the E model description/syntax in line 133. The E model syntax is used an ABM voltage source. I think you misinterpret it as a voltage controlled voltage source. Please see syntax comparison below.

 

SPICE Syntax:

voltage controlled voltage source

Exxx<N+> <N-> <NC+> <NC-> <value>

 

ABM voltage source

Exxx<N+> <N-> VALUE = {<mathematical equation>}

 

Voltage Controlled Voltage Sources and ABM Voltage Sources are quite the same, it's just that ABM voltage sources can use mathematical equations that could also be dependent to the voltage across the desired nodes. Where as voltage controlled voltage sources can only accept specific numerical value which would be its gain and is dependent only to the voltage across its controlling nodes (NC+,NC-).

 

The line 133 in the ADG508F spice model used an ABM voltage source with a mathematical equation that is dependent to the voltage across the nodes (8,0) and (13,14). Meaning, E_1_E with nodes 611 and 0 would source a voltage that is equal to 10 multiplied by the voltage across the nodes (8,0) divided by the voltage across the nodes (13,14) plus 0.15. This is also the same with line 134 with its respective nodes.

 

Hope this clarifies the E model you're referring to.

 

 

Best Regards,

May


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