LMV324: New coo LMV324 prodution test failure

Gabriel Wang1

Part Number: LMV324
Other Parts Discussed in Thread: LM324

Tool/software:

Dear Expert

Now I meet cutomer use our new fab's warfer device ,they system is not work ,the schmetic is below ,and we found now use MYS COO product can find the AL1+ output voltage amplitude could not be increase.

PMW 56khz.pdf

6 months ago

0 Clemens Ladisch 6 months ago

Guru 317750 points

The schematic shows the LM324, not the LMV324.

The schematic does show the supply connections of the opamps, and does not specify the supply voltages.

0 Ron Michallick 6 months ago in reply to Clemens Ladisch

TI__Guru**** 166116 points

Gabriel,

Can you show the differences in waveforms under the same setup?

0 Gabriel Wang1 6 months ago in reply to Ron Michallick

Genius 4725 points

Dear Ron

I test that only at using detection circuit ,lmv324 use us a compartor ,the output amplitude will decrease about 20%-30%.

And customer found that it's wrone output will cause the fouction failure.

0 Clemens Ladisch 6 months ago in reply to Gabriel Wang1

Guru 317750 points

What are the voltages that you measure at pins 12, 13, and 14? What is the load connected to AL1+?

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LMV324: New coo LMV324 prodution test failure