One useful application to take advantage of TMUX6121, TMUX6122, and TMUX6123's precision performance is the sample and hold circuit. A sample and hold circuit can be useful for an analog to digital converter (ADC) to sample a varying input voltage with improved reliability and stability. It can also be used to store the output samples from a single digital-to-analog converter (DAC) in a multi-output application. A simple sample and hold circuit can be realized using an analog switch like one of the TMUX6121, TMUX6122, and TMUX6123 analog switches.

Figure 9-1 A Sample and Hold Circuit Realized Using the TMUX611x Analog Switch