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Questions tagged [hspice]

A commercial version of the analog circuit simulator SPICE ("Simulation Program with Integrated Circuit Emphasis").

A commercial version of the analog circuit simulator SPICE ("Simulation Program with Integrated Circuit Emphasis").

46 questions
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The usage/purpose of 0Ω resistor and 0V voltage source

I am a SPICE simulator developer (math major, does not possess enough knowledge for the electrical engineering part), and recently I found some interesting facts in the netlist provided by the designer. For some resistors, the designer puts the…
Rich Zhang
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Hspice to Ltspice conversion

Has anyone had any luck converting Hspice or IBIS model files to formats LtSpice can use? Any help much appreciated, thank you!
user156478
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Is this NGSPICE simulation correct with ASAP7 transistor models?

I am trying to run some 7 nm simulations with NGSPICE, and I would like to know if my results are believable or not. I am using the ASAP7 transistor model, which I have converted from HSPICE to NGSPICE. I am not interested in completely precise…
NoiseEHC
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Simulating a big circuit for a huge number of times

What is the best way to simulate a big circuit for a huge number of times? I have a big resistive network (lets say 100x100). I want to run it about 10 million times. What is the best way for that? I am using HSPICE, but it is so slow and it takes…
Shannon
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HSpice Manuals/Handbooks. What does Þ mean in the equations?

I'm working with the HSPICE MOSFET Models Manual for a university project. In some equations there's this \$Þ\$ symbol. For example from an equation regarding the Shichman-Hodges Model: $$ W_\text{eff}=M\cdot \left( W_\text{scaled} \cdot WMLT +…
Sky V
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HSPICE create a voltage source in top level and instantiate it in a .subckt

I am fairly new to HSPICE and I am investigating someone else's testbench and I am trying to track down where is the vsource generator used in the .lstb analysis in this testbench. I am a bit shorthanded in providing a bigger picture of the problem,…
San
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HSPICE command naming weirdness

I have a simple digital invert circuit using ASAP7 nmos and pmos transistors. When I use Synopsys HSPICE to simulate the below script, it throws an error Definition of model/subckt "nmos_rvt" is not found for the element "xinv1^xm1". Please specify…
user2698
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Undefined parameter name error in Hspice

I am trying to run this Hspice code in Spectre. I am getting this error Can anyone help me what is the mistake?
Rohit
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Generate HSPICE input signal

I want to add this input signal in my hspice code. Here I am doing transient analysis. How can I do it?
Tanvir Hossain
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no output error in hspice

I have this code for hspice simulation q3 simulation vs vin 0 ac 1 0 r1 vin va 2k r2 va vb 2k r3 vb 0 4k r4 vb vout 8k e1 vout 0 0 va …
Mehran
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Finding NM by writing formula in HSPICE

I want to calculate write, hold, and read the static noise margin of an SRAM block (WSNM, HSNM, and RSNM). In order to do so, I want to write a command to do it, so I need to find the input voltage when its differentiation is equal to -1 for…
arsalan ghasemian
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How can you change the precision of the pole zero ouput in HSpice?

I'm extracting the poles and zeroes of a circuit using HSpice, but I need it to be as accurate as possible. HSpice is only giving me 6 decimal places, and I'm wondering if it would be possible to increase the number of decimal places outputted.
torpdeo
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Higher cutoff frequency of op-amp circuit is different in simulation and on paper

I have the circuit below: This is an inverting amplifier, the op-amp that is used is 741 as shown in the circuit. Open-loop gain of the op-amp is \$ A_{0}=2\times 10^5 \$ and the cutoff frequency of the op-amp is \$ f_{c}=5 Hz \$. I am going to…
Ali Nategh
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Is there any way to comment a block in HSPICE?

I know "*" comments the line. Is there any way to select a group and comment the whole block in HSPICE?
Shannon
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How to implement a switch in spice?

I have designed a circuit where I want to give a pulse of very short duration using a switch. How can I implement it in spice.
Anirban Choudhury
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