Printed circuit board (PCB) layout plays a significant role in achieving desired ac and dc performance from the device. The device has a pinout that supports easy splitting of the noisy and quiet grounds. The digital and analog signals are available on separate sides of the package for easy layout. Figure 11-1 shows an example layout where the different ground planes have been clearly demarcated, as well as the best position for the single-point shorts between the planes.

For best power-supply bypassing, place the bypass capacitors close to the respective power-supply pins. Provide unbroken ground reference planes for the digital signal traces, especially for the SPI and LDAC signals. The RST and FAULT signals are static lines; therefore these lines can lie on the analog side of the ground plane.