NAME_TABLE:

C_Function_Name: cm_gain

Spice_Model_Name: gain

Description: "A simple gain block"

PORT_TABLE:

Port Name: in out

Description: "input" "output"

Direction: in out

Default_Type: v v

Allowed_Types: [v,vd,i,id,vnam] [v,vd,i,id]

Vector: no no

Vector.Bounds: - -

Null.Allowed: no no

PARAMETER_TABLE:

Parameter_Name: in_offset gain out_offset

Description: "input offset" "gain" "output offset"

Data_Type: real real real

Default_Value: 0.0 1.0 0.0

Limits: - - -

Vector: no no no

Vector_Bounds: - - -

Null_Allowed: yes yes yes

• Description:
  This function is a simple gain block with optional offsets on the input and the output. The input offset is added to the input, the sum is then multiplied by the gain, and the result is produced by adding the output offset. This model will operate in DC, AC, and Transient analysis modes.

Example:

 
a1 1 2 amp 
.model amp gain(in_offset=0.1 gain=5.0 
+ out_offset=-0.01)