ADS124S06: R value in VBIAS circuit

Oba

Genius 16030 points

Part Number: ADS124S06

Hello,

The below is VBIAS generator block diagram from the datasheet.

They would like to know the value of one R in the voltage divider ?
Could you tell me the value?

If possible, could you also possible to tell me MIN/MAX value of R and its temperature characterestic?

Regards,
Oba

over 1 year ago

+1 Bob Benjamin over 1 year ago

TI__Guru** 113765 points

Hi Oba,

I responded to the same question yesterday. Can you share the customer name and project info in the notes section in the thread tracking at the top of the page?

You can see the response I gave yesterday here:

https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1247505/ads124s06-vbais/4718459#4718459

Best regards,

Bob B

0 Oba over 1 year ago in reply to Bob Benjamin

TI__Genius 16030 points

Hello Bob,

Thank you very much for your support.

Regards,
Oba

0 Oba over 1 year ago in reply to Oba

TI__Genius 16030 points

Hello Bob,

The customer has an additional question.

Is max value of the below analog supply current for "VBIAS buffer, no extenral load" available?
If not, is it posisble to tell me a rough estimation?

Rergards,
Oba

+1 Bob Benjamin over 1 year ago in reply to Oba

TI__Guru** 113765 points

Hi Oba,

Even if I could find a max current value it would not be guaranteed. In silicon using a value of 20% shift (12uA) may be a reasonable estimation. However it could be higher at higher operating temperatures and perhaps up to 20uA.

Best regards,

Bob B

Data converters

Data converters forum

ADS124S06: R value in VBIAS circuit