JAJSFA9E November 2011 – April 2018 ADS5294
PRODUCTION DATA.
The analog inputs consist of a switched-capacitor-based differential sample and hold architecture. This differential topology results in good AC performance even for high input frequencies at high sampling rates. The INP and INM pins are internally biased around a common-mode voltage of Vcm (0.95 V). For a full-scale differential input, each input pin (INP and INM) must swing symmetrically between Vcm + 0.5 V and Vcm – 0.5 V, resulting in a 2 VPP differential input swing. Figure 44 shows the equivalent circuit of the input sampling circuit.