Place a minimum 10nF capacitor at the device input (from INP to INN). This capacitor helps avoid voltage droop at the input during the sampling period of the switched-capacitor input stage.

Do not short GND1 to INN directly at the device input. For best accuracy, route the ground connection as a separate trace that connects directly to the shunt resistor. See the Layout Example section for more details.

Do not leave the inputs of the AMC0x00D-Q1 unconnected (floating) when the device is powered up. If the device inputs are left floating, the input bias current potentially drives the inputs to a positive value that exceeds the operating common-mode input voltage. This condition causes the device to output the fail-safe voltage described in the Analog Output section.

Connect the high-side ground (GND1) to INN, either by a hard short or through a resistive path. A DC current path between INN and GND1 is required to define the input common-mode voltage. Do not exceed the input common-mode range specified in the Recommended Operating Conditions table.