Original Question: How to simulate signal? by Kevin1102
I used our ADIsimPE to simulate circuit doubt and try to imitate Oscilloscope.
Attachment is my ADIsimPE file, I try to measure Vin and Vout Waveform or voltage.
I want to show waveform method.@
Could you teach us how to do steps (Probe) or change the file directly once send back to me?
I will appreciate your help with this situation.
Verified Answer: RE: How to simulate signal? by ezadminThis question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.Thank you,EZ AdminQuestion: RE: How to simulate signal? by hyao
Sorry for the late response.
The inverting amplifier in your schematic won't work as the single power supply is used and the output voltage is limited to within the rails, the output can not go to negative. Also, it's good to add another resistor R3 from the Vin+ to GND for the bias current cancellation. usually set R3=Rin//Rf. Attached is the modified model for your reference. Double click the Vin probe and select "Auto" instead of "use separate grid", you will get Vin and Vout waveform in same the grid.
Question: RE: How to simulate signal? by hyao
Hi Harry, thanks for pointing it out.
Question: RE: How to simulate signal? by FormerMember
I disagree w/ Hong. You do NOT need R3. The input offset current is almost as large as the input bias current,
so it doesn't buy you anything. If the bias current was microamps, yes, when bias current is picoamps,
you don't need the resistor.