ZHCSH46A December 2017 – June 2018 AMC1311
PRODUCTION DATA.
For best performance, place the smaller 0.1-µF decoupling capacitors (C1 and C6) as close as possible to the AMC1311 power-supply pins, followed by the additional C2 and C5 capacitors with a minimum value of 1 µF. The resistors and capacitors used for the analog input (C3) and output filters (R5, R10, and C13) are placed next to the decoupling capacitors. Use 1206-size, SMD-type, ceramic decoupling capacitors and route the traces to the VIN and SHTDN pins underneath. Connect the supply voltage sources in a way that allows the supply current to flow through the pads of the decoupling capacitors before powering the AMC1311.
Figure 53 shows this approach as implemented on the AMC1311EVM. Capacitors C5 and C6 decouple the high-side supply VDD1 while capacitors C1 and C2 are used to support the low-side supply VDD2 of the AMC1311.