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TINA and LTspice IV
I have used TINA and LT spice to simulate a same circuit but got two different result.
Which simulator i should trust?
What circuit did you simulate? Would you send the TINA and LTspice for debug? Which version of TINA did you use? We would be happy to help you with this question.
TINA version I am using is 220.127.116.11 SF-TI.
Please let me know how I can send those file to you?
The attached files are the same circuit we used TINA and LTspice IV to simulate but got total different results.
Thank you so much for your helps.
We will look into these and get back with you in a week or less with findings.
Thank you so much SaraR.
After checking the performance of the circuit, we have found two things that have added to the difference in the TINA simulation. The first was the missing 50 ohm resistor at the input. The second issue was more difficult to find. Apparently, a couple of parameters in TINA's built in transistor model were different from the current manufacturer's model. I am attaching a new TINA_reset_changed .TSC file to this post for your to evaluate. The parameters changed were the Reverse Beta (from 5 to 1.3) and the Reverse transit time (from 51.7n to 5.17n).
After these changes are made, the waveforms look more closely similar. As with any test between two simulators, there will be differences due to the individual nature of each simulator (defaults, convergence alogrithms, tolerances, numerics, etc.).
Please let us know if you have any additional questions.
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