TLV4113: TLV4113 output

Hugo Liu

Genius 5095 points

Part Number: TLV4113

Hi Sir,

Our customer used the TLV4113 on product, But they are found out have glitch on AL_OUT in system Shutdown.

We have check open the output side, but not improve.

Can you give me some suggest for this issue?

over 5 years ago

0 Alexander Davis over 5 years ago

TI__Expert 6250 points

Hi Hugo,
When the power supply to an op amp is below its minimum operating voltage, the behavior of its output may not be well defined. This can give rise to transient behaviors during power up and power-down. We have sometimes seen improvement of these transients by lightly loading the op amp output. For example, duplicating the 10kΩ resistor on AR_OUT to AL_OUT may help reduce the amplitude of this transient.

0 Dennis Goeke over 5 years ago in reply to Alexander Davis

TI__Genius 11135 points

Hugo

We haven't heard back from you so we assume this answered your question. If you need additional help just post another reply below.

Thanks
Dennis

0 Hugo Liu over 5 years ago in reply to Dennis Goeke

Genius 5095 points

Hi Alex,

May I Double check with you, So We need add the 10K between AR_OUT & AL_OUT? or 10k to GND?

Hugo

0 kai klaas69 over 5 years ago in reply to Hugo Liu

Guru 140200 points

Hi Hugo,

each output should have a 10k load to GND, as shown in your right scheme.

Experiment a bit with this resistance to get the lowest acceptable glitch.

Kai

0 Alexander Davis over 5 years ago in reply to Hugo Liu

TI__Expert 6250 points

Hi Hugo,
The 10k resistor should be placed from the output to GND on each channel.

0 Dennis Goeke over 5 years ago in reply to Alexander Davis

TI__Genius 11135 points

Hugo

Did this resolve your issue? If not, just post another reply.

Thanks
Dennis

0 Hugo Liu over 5 years ago in reply to Dennis Goeke

Genius 5095 points

Hi Dennis,

OK, Thanks for your team support,

Hugo

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TLV4113: TLV4113 output