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TLV320ADC3140: CHx_DC bit

Kuramochi Tadahiko
Guru 28715 points
Part Number: TLV320ADC3140


Hi,

There are CHx_DC bits as below;

What is the difference of the internal circuit between AC-coupled input and DC-coupled input?

Any variation is not seen even if this register is switched.

Best Regards,

Kuramochi

  • 0
    TI__Guru 64045 points

    Hello,

    Unlike the other post about the CHx_INTYP settings, the CHx_DC settings change some of the internal common-mode biasing and other settings which enables the user to directly DC couple the inputs and thereby overdrive the internal biasing used when in AC coupling mode.  You'll notice slight performance deviations between DC and AC coupled modes due to these effects.