SBAS707B June 2016 – January 2018 ADS8910B , ADS8912B , ADS8914B
Dynamic currents are also present at the REFBUFOUT and REFM pins during the conversion phase, and excellent decoupling is required to achieve optimum performance. Place a 22-μF, X7R-grade, ceramic capacitor with at least 10-V rating and an ESR of 1-Ω between the REFBUFOUT and the REFM pins, as illustrated in Figure 119. Select 0603- or 0805-size capacitors to keep equivalent series inductance (ESL) low. Connect the REFM pins to the decoupling capacitor before a ground via.