A First Example (SIMetrix)

Running First Example

Before running the optimiser, open the associated schematic. Simply click the Open... button located at the top left of the optimiser GUI. The schematic is shown below:

The circuit is a DC coupled wide-bandwidth differential amplifier with a single ended output. The desired aim is to minimise the current consumption of the design while maintaining a minimum bandwidth, gain and linearity.

To run the optimiser, highlight the optimiser GUI then click on the Play button as illustrated below:

While the optimiser is running you should see progress messages show in the command shell. E.g:

P{0.17\textwidth}P{0.17\textwidth}P{0.17\textwidth}P{0.17\textwidth}P{0.17\textwidth}

set to 200) or when the optimiser considers that it has found the best possible result based on the tolerance settings.

In our run of this circuit, the following was the result:

In summary, the first run using initial parameter values failed to comply with 2 out of 3 specifications while using 2.44mA supply current. In the final iteration, all specs were met and the supply current had been reduced to 1.74mA a 30% saving.

Running First Example - HTML Report

After the optimisation run is complete, you can generate and HTML report which will show the specification of the measurements and parameters along with the full results. To generate the HTML report, select menu Optimiser > Create Optimiser HTML Report. See below for an example of an HTML report.

Running First Example - More Runs

You might like to try experimenting with different specifications. For example