M. Ingels et Msj. Steyaert, DESIGN STRATEGIES AND DECOUPLING TECHNIQUES FOR REDUCING THE EFFECTS OF ELECTRICAL INTERFERENCE IN MIXED-MODE ICS, IEEE journal of solid-state circuits, 32(7), 1997, pp. 1136-1141
A key issue in the successful integration of analog circuits is a stab
le analog power supply. Traditional on-chip decoupling methods exhibit
transients in the supply of voltage drops and power losses. This pape
r introduces the RLC decoupling method that features an enhanced trans
ient response while being especially suited for low-power, low voltage
applications. Both a theoretical and a practical approach are present
ed together with measurement results. As the benefits of a stable loca
l power supply can be lost by the inadequate connection of two subcirc
uits with relative variations on the local grounds, a differential app
roach of signal transfer is proposed. Furthermore, the effect of a goo
d local decoupling can be deteriorated by substrate noise, so some att
ention is given to this problem too.