AD633 multiplier connection error

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SUMMARY

The forum discussion addresses a simulation issue encountered while using Proteus 7.4SP3 to simulate the AD633 multiplier. The user reports two specific SPICE warnings: "DELMIN increased to 1.11022e-016 due to lack of time precision" and "TRAN: Timestep too small; timestep = 0: trouble with node #v:u1:nc#branch." To resolve the simulation errors, it is essential to ensure that the unused X2 and Y2 inputs are connected to an appropriate voltage, likely Ground, to stabilize the circuit.

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  • Understanding of SPICE simulation principles
  • Familiarity with Proteus 7.4SP3 software
  • Knowledge of operational amplifier (op-amp) configurations
  • Basic concepts of the AD633 multiplier functionality
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  • Investigate SPICE simulation settings to adjust timestep parameters
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Electronics engineers, circuit designers, and students working with simulation software who are troubleshooting issues related to the AD633 multiplier and SPICE simulations.

syee10
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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 =)
 

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The four X and Y inputs are op-amp inputs, the unused X2, Y2 inputs must be connected to an appropriate voltage, probably Ground in your circuit.
 

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