ABSTRACT
Wideband/video signals are loosely defined as anything over few MHz. These kinds of signals are typically found in television production, transmission, and viewing equipment, which account for the “video” half of the name of this chapter. Other “wideband” signals include radar, medical imaging, high frequency instrumentation, information distribution networks, and direct access memory systems, such as hard disk drives. Monolithic solutions for wideband switching are emerging that include input and output buffers on the same IC as the switches. The difficulty in providing buffered analog switch functions is in processing technology. The ideal video switch process is different from the ideal buffer or amplifier process. The D/CMOS switch technology makes good low capacitance, low ON resistance switches, but it is impossible to design reasonably low power, wide bandwidth amplifiers.
