Abstract
CMOS current window comparators are described whose window is independent of process parameters, transistor dimensions, temperature variations and supply voltages. Two configurations of the realization with inverted output are presented. The window of the circuits is determined merely by two currents, and is adjustable over the range of the input current. Simulation results show no change of the window for a wide range of temperature variations from −50°C to +150°C and a very good frequency response.
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