ZHCSSH5A August 2023 – December 2024 LOG200
PRODMIX
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The LOG200 integrates two separate voltage references (2.5V and 1.65V) and a current reference (1μA). The voltage references are designed to be used as the input common-mode reference (2.5V) and output reference (1.65V); however, the references can also be used for other functions requiring precise voltages within the system, as long as the maximum current limitations are observed. These voltage references are established relative to the voltage applied to the REFGND pin; therefore, establish the current return path to the REFGND pin rather than to VS–. A snubber circuit improves stability when driving larger capacitive loads, and can improve noise filtering. If not using a voltage reference, place a 33pF capacitor between the corresponding pin and REFGND.
The current reference is designed to be used as the input to the I2 pin. If the current reference is instead used for another function in the system, establish the corresponding current return path to the VS– supply potential. If the current reference is unused, float the corresponding pin.