By Mingliang (Michael) Liu
This e-book is helping engineers to understand basic theories and layout rules through proposing actual and intuitive reasons of switched-capacitor circuits. a variety of circuit examples are mentioned and the writer emphasizes crucial and basic rules desirous about imposing cutting-edge switched-capacitor circuits for analog sign processing and gear administration functions. during the e-book, the writer provides various step by step tutorials and provides useful layout examples.
While a few quantitative research is critical to appreciate underlying innovations, tedious mathematical equations and formal proofs are shunned. An intuitive appreciation for switched-capacitor circuits is completed. a lot of the prevailing details on modern switched-capacitor circuit functions is within the type of functions notes and information sheets for numerous switched-capacitor ICs. This booklet compiles such details in one quantity and coherently organizes and constructions it.
* step by step tutorials which emphasize the main primary principals
* Few tedious mathematical equations
* the 1st easy-to-understand compilation in this topic
Read or Download Demystifying Switched Capacitor Circuits PDF
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Extra info for Demystifying Switched Capacitor Circuits
Open/close) at a rate of 2fclk. 1(a) is given by 2fclk. Next we investigate why this configuration is often referred to as the bilinear SC resistor simulation. Let us first take a look at the frequency-domain description of the charge distribution by a resistor. 6) Here V0 is the voltage difference between two nodes, V1 and V2. 7), can be mapped directly to its corresponding z-domain equation that relates Q0 (z), V0 (z), and C by simply replacing s in the s-domain equation with its z-domain equivalence, F(z) .
5] K. Bult and G. Geelen, “A fast-settling CMOS Op Amp for SC circuits with 90-dB DC gain,” IEEE Journal of Solid-State Circuits, Vol. 25, pp. 1379–1383, December 1990. 1 Introduction In this chapter we study basic switched-capacitor building blocks, which are the requisites for realizing analog sampled-data functions. Switched-capacitor (SC) building blocks are often classified into two categories: passive and active. A passive SC building block (or element) is defined as a network composed of switches and capacitors only, whereas its active counterpart is not only built from switches and capacitors, but also active devices such as op-amps.
Furthermore, if it is assumed that the input is a true continuous-time signal, then the frequency response of the S&H, which is basically a sinc response, helps attenuate the higher-frequency signal replicas (at 2fclk and beyond). The interested reader is referred to  for mathematical analysis of the added S&H’s influence on the SC circuit’s frequency response. 1 since we can simply follow the same steps. 1(c) . 1(b). As a result, the amount of charge that flows from V1 to V2 is equal to C(V1 − V2) during each clock period T (assuming there is no parasitic capacitance).
Demystifying Switched Capacitor Circuits by Mingliang (Michael) Liu