11.1 Layout Guidelines

In most cases, a single continuous ground plane connecting the analog and digital components is preferred. Use wide, low-impedance PCB traces or dedicated layers for the power-supply connections because the analog supply current is partially modulated by the input signal. Also use wide PCB traces or dedicated layers for REFP and REFN. If REFN and AVSS are connected together, use a Kelvin connection at the voltage regulator ground terminal. These practices help maintain good THD performance and minimal crosstalk errors when multiple ADCs are used.