Evolution from Operational Amplifier to Data Amplifier, 1968
Evolution from Operational Amplifier to Data Amplifier, by Robert Demrow, Analog Devices, 1968.
This book is a classic analysis of op amps provided by an early Analog Devices’ scientist, Robert Demrow. In the early days of modular op amps this article clearly describes the use of negative feedback amplifiers and their applications to many signal conditioning systems.
The article is available for download: