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A power-efficient frequency compensation topology for three-stage transconductance amplifiers is presented in this paper. Stability analysis and design equations are carried out based on the small-signal model. Unlike many recently reported solutions, the proposed architecture do not rely upon parasitic and/or pole-zero cancellation, thus providing a more robust design. As an example, the proposed...
Multistage operational amplifiers suitable for nanometer-scale CMOS technologies and low-voltage applications are described. The low intrinsic gain of transistors is compensated for with cascade of single-stage amplifiers. Techniques for compensations are revisited and the optimal solution identified. An example of a novel scheme that achieves 67 dB of DC gain, 320 MHz of bandwidth and 61 degrees...
This paper presents a modification of the standard autozero (AZ) amplifier topology that requires less chip area for achieving high offset performances. To improve the charge injection effects on the residual offset voltage a high gain ratio between the signal path and offset compensation loop is implemented. The novelty of this design consists in the different two input pair topologies used.
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