Other Parts Discussed in Thread: TIDA-00170, ADS8688
Tool/software:
Hi Engineer:
We designed a signal acquisition circuit using the ADS8688, referencing the document TIDA-00170 released by TI.Please help us verify the following points.
1、In the document TIDA-00170 showned in Figure 1 ，What are the advantages of using a photomos relay（U14), and can it be replaced with an NMOS?
2、What is the purpose of R74, and why is it pulled down to -15V?
Figure 1
