Using the AD813x.pdfa AN-584 APPLICATION NOTE One Technology Way P.O. Box 9106 Norwood, MA 02062-9106 Tel: 781/329-4700 Fax: 781/326-8703 www.analog.com Using the AD813x THEORY OF OPERATION Differential voltage refers to the difference between two The AD813x differs from conventional op amps by the node voltages. For example, the output differential volt- external presence of an additional input and output. The age (or equivalently output differential-mode voltage) is additional i……