Basic Building Blocks of Linear SC Networks

Switched capacitor techniques take advantage of the excellent properties of MOS capacitors and switches and permit the realization of numerous analog sampled-data MOS circuits. Most SC circuit implementations make use of basic building blocks or cells, which are realized in many different ways. In this chapter we systematically present a diverse set of basic building blocks by separating them into a few major classes. For each circuit we determine realizable transfer functions, as well as the best way to implement them. We concentrate mainly on stray-insensitive and/or parasitic-compensated circuits because of their importance in integrated MOS realizations. We recall that a stray-(parasitic-) insensitive network is defined as a network whose desired transfer functions are not dependent upon the stray capacitances of its elements.