Hi,

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 =)

 

Start by using sine wave inputs rather than square wave to check everything works as it should.

Sims don't like abrupt changes - you could put the square wave inputs through RC filters to smooth the waveform edges applied to the AD633 - or you could reduce the 'reltol' sim parameter and reduce the time iteration. You may also need to set the I.C. voltage across the caps to help a bit.

Ciao, Tim

 

If there is an option to set something like TSEED (as in LTspice), try setting it to 0.1 x 10e-6.