CPC G01R 31/2626 (2013.01) | 16 Claims |
1. An integrated circuit, comprising:
a noise generator circuit, comprising:
a first amplifier including a single transistor pair, wherein the single transistor pair is operable to generate 1/f noise;
an output amplifier coupled to the first amplifier and configured to generate a 1/f noise signal as a function of the 1/f noise; and
a noise envelope detector circuit, comprising:
a low pass filter operable to pass low frequency signals of the 1/f noise signal as a filtered 1/f noise signal; and
a second amplifier or a comparator coupled to the low pass filter and operable to output a direct current (DC) voltage signal according to an envelope of the filtered 1/f noise signal, wherein the DC voltage signal is a function of an envelope of the filtered 1/f noise signal.
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