220.127.116.11 Detailed Design Procedure
The procedure discussed in this section can be used for any ADS816x application circuit. See the Example Schematic section for the final design for this example.
- All ADS816x applications require the supply and reference decoupling as given in the Example Schematic and Layout sections.
- Select the buffer amplifier and associated charge bucket filter between the multiplexer output and the ADC input using the method described in the Selecting an ADC Input Buffer section. The values given in this section meet the maximum throughput and input signal frequency design requirements given. A lower bandwidth solution can be used in cases where lower power is required.
- Select an input amplifier for rapid settling when the multiplexer switches channels. This selection is covered in the Multiplexer Input Connection section. The OPA320 buffer and associated RC filter illustrated in Figure 100 meet these requirements.