MSP430FR2676: About "DVCC Charge Enable" and "Input Impedance Bias Current" of CapTIvate

Sh.Sasaki

Part Number: MSP430FR2676

Hi experts,

To tune CapTIvate, I need to enable "DVCC Charge Enable" and "Input Impedance Bias Current" in the CapTIvate Design Center.
Does enabling this feature affect the behavior in the following ways?

For example:

Increased power consumption
Measured value changes
Increased measurement time
etc

Best regards,
Sasaki

over 4 years ago

+1 Dennis Lehman over 4 years ago

TI__Guru 71216 points

Hello Sasaki,

Enabling "DVCC Charge" uses the DVCC voltage to charge the electrode vs. the internal 1.5V LDO. It does not impact measurement time or the measured values. Enabling the "Input Impedance Bias Currents" does, however, does increase the current consumption by 100uA, but only during a measurement.

0 Sh.Sasaki over 4 years ago in reply to Dennis Lehman

Guru 13625 points

Hi Dennis-san,

Thank you as always.

I understand.

Best regards,
Sasaki

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MSP430FR2676: About "DVCC Charge Enable" and "Input Impedance Bias Current" of CapTIvate