JAJSSA9 November 2023 DAC61401 , DAC81401
PRODUCTION DATA
Printed circuit board (PCB) layout plays a significant role in achieving desired ac and dc performance from the device and this kind of precision analog component requires careful layout, adequate bypassing, and clean, well-regulated power supplies. As a general, rule keeping digital traces must be placed as far away from analog traces when possible.
An additional 1‑μF to 10‑μF capacitor and 0.1‑μF bypass capacitor are recommended to be placed close to the device.
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 signals. The FAULT signal is static line; therefore this line can lie on the analog side of the ground plane. An example layout is shown in the Figure 8-8.