Do not leave the inputs of the AMC1333M10 unconnected (floating) when the device is powered up. If either modulator input is left floating, the input bias current can drive this input beyond the specified common-mode input voltage range. If both inputs are beyond that range, the gain of the front-end diminishes and the output bitstream is not valid.

Connect the high-side ground (AGND) to INN, either by a hard short or through a resistive path. A DC current path between INN and AGND is required to define the input common-mode voltage. Take care not to exceed the input common-mode range, as specified in the Section 6.3 table. For best accuracy, route the ground connection as a separate trace that connects directly to the sense resistor rather than shorting AGND to INN directly at the input to the device. See the Section 10 section for more details.

Do not connect protection diodes to the inputs (INP or INN) of the AMC1333M10. Diode leakage current can introduce significant measurement error especially at high temperatures. The input pin is protected against high voltages by its ESD protection circuit and the high impedance of the external restive divider.