ISSN:
1573-1979
Keywords:
integrators
;
oscillators
;
current-mode
;
companding
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
Notes:
Abstract In this paper, the strong inversion MOS analog of the recentlyproposed class of log-domain filters, or translinear filters, isproposed.The dynamic √ -domain principle, or dynamicvoltage-translinear principle, exploits the quadratic law, describing theMOS transistor in the strong inversion region, both to perform an expandingV-I conversion of the capacitor voltages and to implement multiplicationsand square roots of currents based on the voltage-translinear principle.Thepresented theory is applied to the design of a current-controlledtwo-integrator oscillator. Experiment results of a pure CMOS test IC showthe feasibility of the √ -domain principle. The realized oscillatorhas a THD of −42 dB and is linearly frequency tunable across 1.3decades.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008213800617
