By Mingliang (Michael) Liu
This publication is helping engineers to know primary theories and layout rules by way of proposing actual and intuitive motives of switched-capacitor circuits. a number of circuit examples are mentioned and the writer emphasizes an important and primary ideas excited about enforcing state of the art switched-capacitor circuits for analog sign processing and gear administration functions. during the e-book, the writer offers a number of step by step tutorials and provides useful layout examples.
While a few quantitative research is important to appreciate underlying thoughts, tedious mathematical equations and formal proofs are kept away from. An intuitive appreciation for switched-capacitor circuits is completed. a lot of the prevailing info on modern switched-capacitor circuit functions is within the type of purposes notes and information sheets for varied switched-capacitor ICs. This publication 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
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Additional info for Demystifying Switched-capacitor Circuits Newnes
In addition, the parasitic capacitance at the virtual ground of the op-amp is negligible if an ideal op-amp is assumed. To investigate the effect of Cp1 on the integrator’s transfer function, we employ the principle of superposition. , parasitic-free) bilinear SC integrator with a switched capacitor of C and a parallel SC integrator with a switched capacitor of Cp1. However, it should be noticed that in the latter, all switches now change positions practically twice every T, the input is sampled and held at a clock rate of 2fclk, and the output jumps only when Φ2 → 1!
50). 1 as a reference. 2(c), we adopt the arguments used in the bilinear integrator case, and we find that all parasitic capacitances, except for Cp2, do not affect the operation of the circuit. Since Cp2 is in parallel with C, their capacitances can be added up. 2(d) is called the parasitic-sensitive series SC integrator. 53) Thus, it is often referred to as the backward-Euler integrator (BEI). 52) we can derive an inverting Type II or backward-Euler lossless discrete integrator (LDI), as reported by Bruton .
The key performance parameters of S&H circuits are investigated, and several design examples are presented. 5 presents an overview of SC interpolators and decimators. 6. 2 Switched-Capacitor Resistor Simulation SC Resistor Simulations A physical resistor can be simulated by different passive SC elements. We start with the periodically reverse-switched capacitor , which is better known as the bilinear SC resistor simulation  (we shall see shortly why the term bilinear is used here). 1(a). Controlled by two nonoverlapping pulses Φ1 and Φ2, the switches change positions only momentarily at discrete instants tn, n = 1, 2, 3, 4, 5, 6 .