LMV358-N: LMV358-N problem

Aosker Liu

Prodigy 520 points

Part Number: LMV358-N
Other Parts Discussed in Thread: LMV358

my customer has a problem

they will product 200 device,now they have used 10 LMV358-N but 3 of them have some problem.

data No.4.6.7 are not right.

The data is very volatile

Here is the schematics

customer want to know why.

Regards,
Aosker Lau

over 5 years ago

0 Ron Michallick over 5 years ago

TI__Guru**** 157366 points

Hello Aosker,

Could you explain the data table in more detail? The left column appears to be part sample number.

I do not know what F41 though F46 means. The numbers is the table are time , voltage, current? At what node(s)?

0 kai klaas69 over 5 years ago

Guru 140200 points

Hi Aosker,

I would omit C2 and C7.

Kai

0 Ron Michallick over 5 years ago in reply to kai klaas69

TI__Guru**** 157366 points

Aosker,

In addition to my original questions and Kai's advice. The DC voltage operating point is zero in and out. LMV358 is not good for zero out due to the anti saturation circuit on the output. AC coupled circuits will lose half the waveform when run at ground rail.

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LMV358-N: LMV358-N problem