296-ALM2403Q1EVM-ND -
As a Customer of using TI parts. I have implemented the attached circuit; however, the output voltage is not as expected. I have also attached the circuit output image for your reference. Q1 - Could you please provide the PSpice simulation for this circuit?
Reply form TI Engineering Support Engineer;
Q2 - Do you have an oscilloscope capture of your input signal as well? Which output are you probing?
Answer yes drawing below
Are you using the same supply voltage of 15V?
Yes, see answer below
Customer comment back to TI Support;
- Output is coming after filter probing at R3.
- supply voltage: yes15V.
see my output here;
Reply From TI Engineering Support Engineer
We do not have the original TINA file for the specific circuit above but this schematic can be built in either our TINA or PSpice simulator.
Q3 - Just to confirm, is this appearing at EXC- or before R3?
Sent back to TI Engineer,
Ideally, we need to see the scope shots at the following pins:
GPIO
Vexc-
Vexc+
IN+1 of ALM2403-Q1.
Is this possible?
Answer- *As of now, I see that we have low amplitude on the 10kHz sine wave, but it is not clear what is causing this. Knowing the amplitude at all above listed pins will help TI Engineering Support Team in determining what may be causing this to happen before we can Resolve this issue.
See the Data sheet for knowing where all the PINs are located.
[ALM2403-Q1 data sheet, product information and support | TI.com]
(ALM2403-Q1 data sheet, product information and support | TI.com)