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.

  • Resolved

TLV2371-Q1: TLV2371-Q1 No Output Issue

Expert 1915 points

Replies: 5

Views: 800

Part Number: TLV2371-Q1

Hi.

Some TLV2371-Q1's output is not good.

So I measured between positive input and negative input.

Abnormal TLV2371-Q1 is open and normal(good) one is about 930mV.

I already used upper 20K but this issue is not occurred.

Why this issue is occurred? What is checking point?

Please let me know and help me.

Thanks

I attached test file.

1212.TLV2371QDBVRQ1.ppt

  • Do you have problem with the op amp output? can you please give some more details? Where do you insert the 20K resistor? Can you please measure between each input and GND/VDD? I believe it is normal to measure certain voltage between the 2 inputs using DC meter.

    Please make sure your meter probes touch the device pins 

    Find the right power solution for your processor or FPGA. Visit www.ti.com/SoCPower today!

  • In reply to Mahmoud Harmouch:

    Thank you for your reply.

    TLV2371-Q1's Input is Humidity sensor. But some abnormal TLV2371-Q1's output is nothing.

    20K is not resistor value.
    I means I used 20K TLV2371-Q1s in this product, and good until now. But at this time this issue is occurred.

    Input vs GND/VDD test is not yet, I will test.

    I discovered some symptom.
    Please check upper attached PPT file.

    All abnormal TLV2371-Q1 is Open, all normal parts is 930~940mV.
  • In reply to Jake Jung:

    I attached test result using multimeter.

    Please check this file and let me know this abnormal cause.

  • In reply to Jake Jung:

    I asked to measure the continuity on each pin and this can be done by having the positive probe at GND and negative probe at others pins. The reading should be diode drop around 0.7V.

    It is very important to explain in detail the failure mode. What is the expected output and what you are measuring? How many devices are failing in application?

    Find the right power solution for your processor or FPGA. Visit www.ti.com/SoCPower today!

  • In reply to Jake Jung:

    Hello SS Jung,

    Please accept my friend request.

    Regards,

    Pete Semig

    Applications Manager, General Purpose Amplifiers

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.