Three circuits using the micropower, low charge injection analog switch LTC201A, which operates from a single 5V supply, are described.
With greater accuracy for both charge and voltage switching, the LTC201A is a superior replacement for the industry standard DG201A. In addition, the micropower LTC201A operates from a single 5V supply, and has lower on-resistance and faster switching speed. These improvements are critical to the operation of the following three circuits.
Figure 371.1 shows a 100Hz to 1MHz voltage-to-frequency converter. This ...