OPA2197: Voltage monitor

Kuan Wei Chen (Kevin Chen)

Genius 9710 points

Part Number: OPA2197
Other Parts Discussed in Thread: TLV6700

Dear Team,

If my customer wants to monitor Vout voltage, do you have suitable reference design and use which part number?

They want to monitor Vout rail, if Vout is higher or lower the circuit need to send a signal to the MCU.

Kevin

over 5 years ago

0 kai klaas69 over 5 years ago

Guru 140200 points

Hi Kuan,

sounds like you need a window comparator?

Kai

0 Kuan Wei Chen (Kevin Chen) over 5 years ago in reply to kai klaas69

TI__Genius 9710 points

Dear Kai,

Yes, I need window comparator.
Will you suggest this reference design?
www.ti.com/.../tidub01.pdf

Or you have better suggestion?
Which comparator product will you suggest?

BR
Kevin

0 Jonathan Nguyen over 5 years ago in reply to Kuan Wei Chen (Kevin Chen)

TI__Expert 4555 points

Kevin,

What is the range of your Vout signal that you want to monitor? What would be your upper/lower window voltage points? Is it critical for your application to have low power/speed?

The more information I have about this, the better I can help. Feel free to take this offline if need be.

Regards,

Jonny

0 Kuan Wei Chen (Kevin Chen) over 5 years ago in reply to Jonathan Nguyen

TI__Genius 9710 points

Dear Jonny,

1V for output.
1.1 for upper window.
0.9 for lower window.
No need to be high speed.

BR
Kevin

0 Jonathan Nguyen over 5 years ago in reply to Kuan Wei Chen (Kevin Chen)

TI__Expert 4555 points

Kevin,

The TLV6700 would be a great option to consider for this window comparator application.

I have also sent you an email offline about another part you can consider (not released yet).

Feel free to close this thread if you wish to continue to discuss offline.

Regards,
Jonny

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OPA2197: Voltage monitor