CC2340R5: Temperature variation of battery monitor function

Shunsuke Yamamoto

Part Number: CC2340R5

Hi team,

May I know how much is the temperature variation of battery monitor function
Is there any document that shows how much error there is due to temperature effects regarding the Battery monitor function?

Best regards,

Shunsuke Yamamoto

over 1 year ago

0 Ryan Brown1 over 1 year ago

TI__Guru**** 217867 points

Hi Shunsuke,

The answer is the same as this related E2E thread: https://e2e.ti.com/f/1/t/1314538

Please see Chapter 14 of the TRM and Section 8.7 of the Datasheet. The battery monitor measures both voltage and temperature of the device, and has an accuracy of 30 mV at nominal conditions, however you should expect minor variation across temperature.

Regards,
Ryan

0 Shunsuke Yamamoto over 1 year ago in reply to Ryan Brown1

TI__Expert 7871 points

Hi Ryan-san,

Thank you for the reply. May I know the minor variation across temperature if possible?

Best regards,

Shunsuke Yamamoto

0 Ryan Brown1 over 1 year ago in reply to Shunsuke Yamamoto

TI__Guru**** 217867 points

This information is not specified in the datasheet and thus not typically shared with broader audiences. Please contact me directly if there is a critical business opportunity which necessitates more detail on this topic.

Regards,
Ryan

0 Shunsuke Yamamoto over 1 year ago in reply to Ryan Brown1

TI__Expert 7871 points

Hi Ryan-san,

Thank you for the reply. May I know the current consumption of battery monitor functio as well?

Best regards,

Shunsuke Yamamoto

0 Ryan Brown1 over 1 year ago in reply to Shunsuke Yamamoto

TI__Guru**** 217867 points

Hi Shunsuke-san,

As part of the always-on power domain (AON PD), the battery monitor function current consumption is enveloped by total power consumption for the device in its current operating power mode.

Regards,
Ryan

0 Shunsuke Yamamoto over 1 year ago in reply to Ryan Brown1

TI__Expert 7871 points

Hi Ryan-san,

Thank you for the reply.

In the TRM, "The battery monitor function uses 7-bit SAR-like ADC" is stated. So could you please check if we have the power consumption data and temperature variant of this ADC?

Best regards,

Shunsuke Yamamoto

+1 Ryan Brown1 over 1 year ago in reply to Shunsuke Yamamoto

TI__Guru**** 217867 points

You have already opened an internal request to further investigate this topic, please respond there so that the correct experts may review your request.

Regards,
Ryan

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CC2340R5: Temperature variation of battery monitor function