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Examples<br />

Example 3—AC and Noise Analysis of a Band Pass Filter<br />

Figure 21-6. Band Pass Filter<br />

Summary of Eldo commands used in this example:<br />

• .MODEL—Model definition.<br />

• .AC—AC analysis.<br />

• .NOISE—Noise analysis.<br />

Netlist Explanation<br />

Band-Pass filter<br />

.model ampop modfas gain=10000.0 p1=5e3<br />

The above line describes the electrical parameters of the <strong>user</strong> defined model ampop based on the<br />

opamp2 macromodel. The gain (gain) and dominant pole frequency (p1) of the model are set to<br />

10000 and 5×10 3 Hz.<br />

Tip<br />

For more details on the opamp2 macromodel and its parameters, refer to “Analog<br />

Macromodels” in the Eldo Reference Manual.<br />

1278<br />

Eldo® User's Manual, 15.3

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