This is an example of a bridge transducer design using the ADuC7060/1 that employs a ratiometric configuration. Note that the sense lines from the bridge (connecting to the reference inputs) are wired separately from the excitation lines (going to VDD & ground). This results in a total of six wires going to the bridge. This six-wire connection scheme is a feature of most off-the-shelf bridge transducers (such as load cells) that helps to minimize errors that would otherwise result from wire impedances.

