In this paper a general and designer-oriented top-down switched capacitor analysis tool, DIANA.SC is presented. The top-down feature of DIANA.SC allows for the analysis at a top level with ideal SC-circuits, at an intermediate level with SC-circuits containing resistors and op-amp poles and at a low level containing MOS-transistors and non-linear capacitors. The basic features and analysis modes at each of the levels are explained and illustrated. Several practical examples indicate the analysis levels and operation modes.