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Demystifying Switched Capacitor Circuits
book

Demystifying Switched Capacitor Circuits

by Mingliang (Michael) Liu
June 2006
Intermediate to advanced content levelIntermediate to advanced
336 pages
10h 24m
English
Newnes
Content preview from Demystifying Switched Capacitor Circuits
Operational Amplifi ers
19
2.3 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. A telescopic CMOS op-
amp and a folded-cascode CMOS op-amp are shown in Figures 2.2 (a) and (b),
respectively. Both are fully differential confi gurations while the common-mode
feedback (CMFB) circuits are not shown for simplicity.
Let us start with the telescopic op-amp shown in Figure 2.2(a) [3]. Specifi cally,
note that the unity-gain bandwidth (i.e., the dominant ...
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Publisher Resources

ISBN: 9780750679077