Y. Papananos et al., DESIGN CONSIDERATIONS AND IMPLEMENTATION OF VERY-LOW FREQUENCY CONTINUOUS-TIME CMOS MONOLITHIC FILTERS, IEE proceedings. Circuits, devices and systems, 144(2), 1997, pp. 68-74
The design of low frequency continuous-time filters is considered. Pro
blems encountered at such frequencies are discussed, along with possib
le solutions. Two case histories reporting experimentally verified des
igns are presented to show that good quality low frequency filters can
be designed reliably in CMOS technology.