• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 47 subscribers
  • Views 59 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

OPA348: Device Failure

user6350528
Expert 1380 points
Part Number: OPA348

Tool/software:

Dear  Team

We installed 100pcs of this device and found that the output was not functioning properly.

When we input 0V into the oscilloscope, the output should also be 0V, but the actual output reached 0.4V.

We conducted an ABA verification and found that the abnormal device was causing the issue.

Any suggestion on what I have mistaken or missed?

The circuit is:

The input:

The output:

Best regards，

Xiao

  • 0
    TI__Guru**** 154376 points

    Hello Xioa,

    user6350528 said:
    100pcs of this device and found that the output was not functioning

    Were all 100 non functioning?

    In the output waveform the output is bimodal, what changes in the setup? (power on , off perhaps). What are the power supply voltages?

    Try adding a 10pF or bigger capacitor in parallel with the feedback resistor to stabilize the feedback loop.