The original intent of the ADC was to monitor power supplies on PC motherboards, but the converter is flexible enough for general-purpose use. The DAS can monitor voltages greater than the channel range by using a simple voltage divider at the front end, as illustrated with PS3. The DAS also provides temperature sensing by using an on-chip bandgap silicon sensor. The DAS provides two frequency-monitoring channels. You can use them to monitor pulsed digital output from a tachometer or as general-purpose frequency counters.
Easy expansion is also possible by selecting a different device address.
Using a different device-address bus entails no additional communication lines, because multiple devices can reside on the same bus. Click here to vote for your favorite Design Idea for this issue. D 1 and D 2 to sum the sinusoidal half-cycles of the input to form the rectified output. For the positive half-cycle of the input signal, IC 1 is a noninverting amplifier with a gain of 1. If you need a full-wave rectifier with amplification, the combination of these two functions in one circuit can provide savings in cost, component count, and board space.