hello,
I couldn't find the information about the input resistors connection of input impedance section (2.5K, 10K or 20K) in the TLV320ADCx140 block diagram, the details as below:
1. is the resistors (2.5K, 10K or 20K) directly connected between the ADC analog input pins to Ground, or connect to a DC dias voltage (VREF/2), because we will plan to use a DC-coupling input for analog signal to ADC, and try to use internally resistors for voltage divide to make sure no clipping, thanks.