Old HP was something special, people here might not be aware that they were a leading test equipment company back then not just a PC maker. That business was spun off as Agilent then spun off again as Keysight.
At a previous job we purchased a 3458a multimeter for some precision measurements. Its use cases are more limited now than in 1989 when it was introduced, but for high precision it's still the standard and the design is practically unchanged. They published a very in depth article on its ADC design at the time.
At a previous job we purchased a 3458a multimeter for some precision measurements. Its use cases are more limited now than in 1989 when it was introduced, but for high precision it's still the standard and the design is practically unchanged. They published a very in depth article on its ADC design at the time.
https://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1989-04.pdf