Comments on "Designing 1-V op-amps using standard digital CMOS technology" [and reply]

In the above paper [see ibid., vol. 45, no. 7, p.769-80, 1998] the authors state that the concept of a so-called "bulk-driven" circuit is, in their opinion, original. However, this concept, called a "body-driven" circuit, was presented over ten years ago at the ECCTD'87 in Paris, France, and has been published in the proceedings of that conference. In 1991, another paper concerning this concept was published, in which the authors have cited our paper and have used the "body-driven" concept in the practical realization of a software-programmable CMOS telephone circuit.