ABSTRACT
If the width of a pulse train is made proportional to one voltage and the amplitude of the same pulse train to a second voltage, then the average value of this pulse train is proportional to the product of two voltages and is called a time division multiplier, a pulse averaging multiplier, or a sigma delta multiplier. The time division multiplier can be implemented using (1) a triangular wave, (2) a saw tooth wave, and (3) no reference wave. There are two types of time division multipliers (TDM): (1) multiplexing TDM (MTDM) and (2) switching TDM (STDM). A time division multiplier using analog 2 to 1 multiplexers is called a multiplexing TDM. A time division multiplier using analogue switches is called a switching TDM. Multiplexing time division multipliers are described in chapter 3, and switching time division multipliers are described in this chapter.
