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Inquiries regarding internal ADC on BQ27520-G4

Atsushi Okui
Genius 4015 points
Other Parts Discussed in Thread: BQ27520-G4

Hello, all

Now we have some inquiries regarding internal ADC on BQ27520-G4 from our customer.

Please refer to the items below, and feedback us with your comment.

Is the reference voltage for ADC2(BAT) used embedded 2.5V LDO?

If so, we are concerning about the tolerance for this reference voltage is 2.3 to 2.6V, which may have influence on ADC accuracy.

If not, please let us clarify about the tolerance of the reference voltage.

We would appreciate if you have some detailed block diagram of ADC2(BAT) core.

We thank you in advance for your information.

Best regards,

  • 0
    TI__Genius 14985 points

    Hi Okui-san,

    I'm sorry, but we currently don't offer details of the internal blocks.  The voltage measurement accuracy is a combination of hardware and firmware, so I recommend you empirically test to find if the accuracy can meet your needs. I think you will find it highly accurate across voltage and temperature.