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Nicholas Gray

Nicholas has worked in the Semiconductor industry for over 30 years and has authored a number of published articles about data converters (ADCs and DACs) and signal integrity issues.

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Former Member over 15 years ago

Sir,

Currently i am using Proteus 7.4SP3 to simulate the AD633 multiplier. The two input is a trend of pulses and i want to get the output. The problem is that it occur 2 warnings which is then stopped my simulation.

1. [SPICE] DELMIN increased to 1.11022e-016 due to lack of time precision
2. [SPICE] TRAN: Timestep too small; timestep = 0: trouble with node #v:u1:nc#branch

I had attached the jpg for you to refer. Please help and commend about the problem. I need your help very much. Thanks =)
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nickgray over 15 years ago in reply to Former Member

Hi, Stephen -

I am not familiar with Proteus, but I do suggest that you contact Lamcenter Electronics, the supplier of this software, and ask them. They do have a user's forum that may be able to help. See them at http://support.labcenter.co.uk/forums/viewforum.php?f=9&sid=9c3487a09b6bb86720bd111886391d57.

I have attached hera an Excel spreadsheet which simylates the AD633, based upon information from the AD633 data sheet. This spreadsheet generates random inputs each time you change anything. The easiest way to do this is to select an unused cell and press the DELETE key. I hope it helps.

- Nicholas "Nick" Gray

Attachments:
AD633_Simulation.xls AD633_Simulation.xls
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nickgray over 15 years ago in reply to Former Member

Hi, Stephen -

I am not familiar with Proteus, but I do suggest that you contact Lamcenter Electronics, the supplier of this software, and ask them. They do have a user's forum that may be able to help. See them at http://support.labcenter.co.uk/forums/viewforum.php?f=9&sid=9c3487a09b6bb86720bd111886391d57.

I have attached hera an Excel spreadsheet which simylates the AD633, based upon information from the AD633 data sheet. This spreadsheet generates random inputs each time you change anything. The easiest way to do this is to select an unused cell and press the DELETE key. I hope it helps.

- Nicholas "Nick" Gray

Attachments:
AD633_Simulation.xls AD633_Simulation.xls
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