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    Help needed with ModelSim Generics

    Hi, I have a generic defined as a std_logic_vector(31 downto 0). It defaults to all bits being high ("H"). I have a question regarding passing the generics value in modelsim. Is it possile to set only particular bits of the generic? For example, say set only bits 12 downto 10, while the...
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    Need help with Monte Carlo Analysis

    Hi, Thanks for the help. I am facing another problem - Orcad Capture is not allowing me to use Monte Carlo analysis where each run is a DC sweep of a model parameter :cry: Is there any way I can go around this limitaion? Thanks, -D
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    Need help with Monte Carlo Analysis

    Hi, I am using Orcad Capture for simulating my design. I have an opamp based design. I need to find out how the offset voltage of the opamp varies when there is variation in the Vth of the other transistors. Basically, I need to use a distribution, say Gaussian, for the Vth variation of all...
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    How to calculate gain of this circuit?

    Hi, I have the following opamp circuit (attached). I would like to calculate the expression for the gain Vout/Vin. An offset voltage is present in the opamp. The reference that I have sites the Vout as: Vout = Vin - Vos(1 + R2/R1) But I am unable to understand how to arrive at this result...
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    How to do Monte Carlo analysis when the DC analysis sweeps a model parameter?

    Hi, I have to find the variation in the output of my design when the vth0 parameter of the mos devices varies. I inserted the required DEV and LOT values in the models and tried doing a MC analysis. The problem I encounter is that each run is a DC analysis of the circuit where one of the model...
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    Need help with Monte Carlo Analysis

    Hi, I have to find the variation in the output of my design when the vth0 parameter of the mos devices varies. I inserted the required DEV and LOT values in the models and tried doing a MC analysis. The problem I encounter is that each run is a DC analysis of the circuit where one of the model...
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    Measure Leakage Current in MOS in a Lab

    Hi, I have a really basic question. I have an NMOS transistor whose Id-Vgs curve I have obtained by biasing VDS=0.1 V and sweeping VGS from -0.5 v to 2 V. The threshold voltage is around 1.1 V (its a 5V technology). I need to obtain Ileak from this data. Usually Ileak is equal to Ids measured...

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