SLAS986D November 2014 – February 2018 AMC7836
The AMC7836 has 21 analog inputs for external voltage sensing. Sixteen of these inputs (ADC_0 through ADC_15) are bipolar and the other five (LV_ADC16 through LV_ADC20) are unipolar. Figure 51 shows the equivalent circuit for the external analog-input pins. All switches are open while the ADC is in the IDLE state.
To achieve the specified performance, especially at higher input frequencies, driving each analog input pin with a low impedance source is recommended. An external amplifier can also be used to drive the input pins.