Peregrine Semiconductor’s PE42020 True DC RF switch,based on UltraCMOS® technology, is the first RF-integrated switch to operate at true DC (0 Hz). This SPDT switch features intelligent integration, high power handling, exceptional linearity, excellent THD, low insertion loss, and fast switching time. With the ability to handle DC signal voltages in the range of +10 V to -10 V, the PE42020 can also maintain high frequency signal fidelity from 8 GHz all the way down to 0 Hz. This application note provides a complete overview of the PE42020 switch including in-depth operational features, functional diagrams, and many more specifications.