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Objective Developmental/life-course (DLC) criminologists often study the age-graded trajectories of traits and behaviors known to correlate with antisocial outcomes. Much of this work has attempted to discern whether traits like impulse control are relatively stable across different portions of the life course. A range of statistical techniques have been employed by researchers attempting to parameterize...
The charge-steering concept is applied to opamps as a means of conserving power. The opamp is the heart of the sigma-delta modulator circuit and the part in which the major portion of the power consumption is dissipated. This work presents a dual mode sigma-delta modulator for two wireless standards, GSM and Bluetooth. It achieves dual-mode operation with the same sampling frequency, while the capacitor...
The conventional current-steering Opamp is the building block of sigma-delta modulator circuits. It is also the major power consuming part of the circuit. The chargesteering concept can be applied to Opamps to obtain minimum power consumption. The two-stage charge-steering Opamp has been designed using 0.18um TSMC CMOS technology that consumes 0.23 mW power at a 48 MHz sampling frequency. A 2nd order,...
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