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how could I trust LTspice sim result?

Category: Software
Product Number: LTspice
Software Version:

very simple OP amp circuit and it comes out with .......

  • Hi:

    You need to increase the value of your feedback resistors. Try making them 5K instead of 500. If you read the data sheet the LT1494 is a low power amplifier. On the Spec page (pg3) the output short circuit current limit is only 1.3 mA typical 0.7 min. The two 500 ohm resistors will need 2 mA of current for the output to reach 2V as you are trying to simulate.