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We present a framework for synthesizing low‐power analog circuits through global optimization over generally nonconvex multivariate polynomial objective function and constraints. Specifically, a nonconvex optimization problem is formed, which is then efficiently solved through convex programming techniques based on linear matrix inequality (LMI) relaxation. The framework allows both polynomial inequality...
Recent attention has been drawn to the hybrid Delta-Sigma (DeltaSigma) structure featuring the integration of continuous-time (CT) and discrete-time (DT) structures in the loop filter. It combines the accurate loop filter characteristic of a DT DeltaSigma modulator and the inherent anti-aliasing of a CT DeltaSigma modulator. We present a design methodology for building a CT-DT DeltaSigma modulator...
Delta-sigma analog-to-digital converters (ADCs) have widespread applications ranging from audio to broadband communications. As portable devices become more popular, low-power design techniques for delta-sigma ADCs have to be explored to maximize battery life. This paper addresses power reduction in delta-sigma ADCs from two perspectives, both with practical considerations. First, a unity-gain signal...
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