ZHCSH90A January 2015 – December 2017 VSP5324-Q1
PRODUCTION DATA.
For optimum performance, the analog inputs must be driven differentially, as shown in Figure 81. This architecture improves the common-mode noise immunity and even-order harmonic rejection. A 5-Ω to 15-Ω resistor in series with each input pin is recommended to damp out ringing caused by package parasitic. The drive circuit shows an R-C filter across the analog input pins. The purpose of the filter is to absorb glitches caused by the sampling capacitors opening and closing.