The document details how to interface Analog Devices' 2S80 Series Resolver-to-Digital Converters (models 2S80, 2S81, and 2S82) with four-wire resolver format signals or synchro format signals. It explains that while traditional Scott-T transformers provide galvanic isolation, they can be costly and large; therefore, a solid-state circuit using operational amplifiers is presented as an alternative.
These devices require nominal 2 V rms amplitude signals to interface with four-wire resolver formats.
The angular errors will range from a typical 2 arc minutes to a maximum of 7 arc minutes.