ant said:
I dont mean a simulator ,but a sw that inputs performance
specifications of a block(i.e. amplifier,oscillator..)
and outputs a schema with values already calculated.
Thanks.
There is not too much of this around. It is a difficult problem in
general. There are a few bits and pieces that can handle some specific
types of circuits. The key idea here is "optimisation" or "optimiser",
but you need to have the circuit topology first.
SuperSpice
http://www.anasoft.co.uk has a DeviceDesigner feature that
will automatically calculate all the bias resisters and mosfet sizes for
a circuit if you specify the node voltages and device currents. SS can
also place an automatically designed filter schematic.
Barcelona Design
http://www.barcelonadesign.com/ has design optimisation
for standard topologies that calculates device sizes.
There are also some power supply designers, e.g. LTSpice.
Kevin Aylward
[email protected]
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.