ADS1294R: Internal Clock Accuracy Vs Temeprature curve

Hi,

I also see a similar post by your company in these thread -

https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1178043/ads1294r-ads1294r

https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/1186361/ads1294r-ads1294r

After discussing internally, this is the information we are allowed to disclose -

The internal clock oscillator is trimmed at room temperature, and the max is guaranteed by characterization by bench measurement. The spec in datasheet will guarantee this performance.

Customer may use EVM to route the internal clock signal out and use frequency counter to evaluate.

Thanks.

Hi Yang,

Yes, our engineers are interested to know this so that we can implement what is needed to be corrected.

Even though we test it using EVM on the bench, we will be only measuring the characteristics of that particular IC, we will not be able to confidently say the same for future batches we use in production.

 The main temperature range in which we are interested is up to 50C if it is 2% for 70C then what is the accuracy for 50C, is it 1%, so that we can correct for 1%  rather than 2% which requires much more effort from us.

Can you help us with up to 50C internal clock accuracy value?

Hi Kumar,

Thanks for the detail info and explanation.

I already provided all the info I can provide and allow to disclose.

Sorry about that.