Soin, R. S.; Maloberti, F.; Franca, J. (ed.): 'Analogue-digital ASICs: circuit techniques, design tools and applications' (Materials, Circuits and Devices, 1991) DOI: IET Digital Library, https://digital-library.theiet.org/;jsessionid=d5418crogcafq.x-iet-live-01content/books/cs/pbcs003e