Download Demystifying Switched Capacitor Circuits by Mingliang (Michael) Liu PDF

By Mingliang (Michael) Liu

This ebook is helping engineers to understand basic theories and layout ideas through proposing actual and intuitive reasons of switched-capacitor circuits. a number of circuit examples are mentioned and the writer emphasizes an important and primary ideas considering imposing state of the art switched-capacitor circuits for analog sign processing and gear administration purposes. in the course of the booklet, the writer provides various step by step tutorials and provides functional layout examples.

While a few quantitative research is critical to appreciate underlying thoughts, tedious mathematical equations and formal proofs are refrained from. An intuitive appreciation for switched-capacitor circuits is completed. a lot of the present details on modern switched-capacitor circuit purposes is within the kind of purposes notes and knowledge sheets for numerous switched-capacitor ICs. This ebook compiles such info 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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16) may amount to as large as 20%, which is apparently unacceptable to most signal processing applications. , C0 /C) and T. 001%). 18) reveals that in the absence of the physical resistor, the accuracy of t1 is dominated by the tracking or matching accuracy between C0 and C. , C0 and C). Furthermore, C0 and C are often located close to each other in the chip layout. 05% in the cutting-edge CMOS technologies. 16). Capacitance Ratios versus Circuit Parameters In the previous development, we learned the relationship between the time constant t1 and the capacitance ratio (C0 /C).

B) Nonoverlapping clock pulses. (c) Parallel resistor simulation. (d) Series resistor simulation. (e) Series-parallel resistor simulation. (f) Parasitic-insensitive resistor simulation. insignificant, and the capacitor voltage can be approximated to a dc voltage (V1 − V2). 1) At time t3, Φ1 is already off and Φ2 is just turned on, and switches 1 and 3 are open whereas 2 and 4 are closed. 2) At time t5, again, Φ1 is turned on instantly and Φ2 is already off, and switches 1 and 3 are closed whereas 2 and 4 are open.

Hence, the maximum current available to charge or discharge the Miller capacitor is equal to the current flowing in the branch that contains transistors M12 and M16, and the resultant slew rate is approximately given by (Id12/Cc) or, equivalently, by (Id16/Cc). , speed). Specifically, for a given current budget, increasing Cc tends to make the op-amp more stable, but in the meantime it reduces the unity-gain bandwidth as well as the slew rate. 3 Telescopic and Folded-Cascode Op-Amps Telescopic and folded-cascode op-amps belong to the cascode op-amp topologies, where multiple transistors are stacked up to increase the total output impedance, which in turn boosts the op-amp’s intrinsic dc gain value.

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