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Electronics Forum / CAD / December 2004AD538 SPICE model?
Hi. Anybody here has a SPICE model for AD538 IC? It's IC used for applications like multiplication, division and square root of voltage. My simulators are SIMetrix and LTSpice. Thanks!  SignatureChaos Master®, posting from Canoas, Brazil - 29.55° S / 51.11° W "People told me I can't dress like a fairy. I say, I'm in a rock band and I can do what the hell I want!" -- Amy Lee NOTE: messages are automatically sent after 00:00AM! I'm on dial-up! > Hi. > > Anybody here has a SPICE model for AD538 IC? It's IC used for > applications like multiplication, division and square root of voltage. > > My simulators are SIMetrix and LTSpice. The block diagram probably has enough detail for you to create your own model. Leon This is Leon Heller for forever: > The block diagram probably has enough detail for you to create your own > model. Here comes the problem! I almost don't have any knowledge in making models from a block diagram :( SignatureChaos Master®, posting from Canoas, Brazil - 29.55° S / 51.11° W "People told me I can't dress like a fairy. I say, I'm in a rock band and I can do what the hell I want!" -- Amy Lee NOTE: messages are automatically sent after 00:00AM! I'm on dial-up! > This is Leon Heller for forever: > [quoted text clipped - 5 lines] > I almost don't have any knowledge in making models from a block > diagram :( Then now would be a good time to start learning. Kevin Aylward salesEXTRACT@anasoft.co.uk http://www.anasoft.co.uk SuperSpice, a very affordable Mixed-Mode Windows Simulator with Schematic Capture, Waveform Display, FFT's and Filter Design. > This is Leon Heller for forever: > [quoted text clipped - 4 lines] > > I almost don't have any knowledge in making models from a block diagram It's just a schematic; it even gives the resistor values. Make some assumtions about the transistors, and it should be quite easy. Leon This is Leon Heller for forever: > It's just a schematic; it even gives the resistor values. Make some > assumtions about the transistors, and it should be quite easy. Then, it's easier. I will try to make my own model. I think I can draw the schematic and make it into netlist for model. []s SignatureChaos Master®, posting from Canoas, Brazil - 29.55° S / 51.11° W "People told me I can't dress like a fairy. I say, I'm in a rock band and I can do what the hell I want!" -- Amy Lee NOTE: messages are automatically sent after 00:00AM! I'm on dial-up! >This is Leon Heller for forever: > [quoted text clipped - 5 lines] > >[]s Any garden variety transistor will work, just choose one small enough so it doesn't limit bandwidth. ...Jim Thompson | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. >> This is Leon Heller for forever: >> [quoted text clipped - 8 lines] > Any garden variety transistor will work, just choose one small enough > so it doesn't limit bandwidth. One doesn't need transistors. e.g. .subckt AD538 out 1 2 3 ... b1 out 0 v= v(1)*v(2)/v(3) ... .ends Or whatever it actually does. Kevin Aylward salesEXTRACT@anasoft.co.uk http://www.anasoft.co.uk SuperSpice, a very affordable Mixed-Mode Windows Simulator with Schematic Capture, Waveform Display, FFT's and Filter Design. |
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