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US 2006/0186957 A1Published application
Noise generator
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorSven Mattison
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Abstract
A device for generating a noise signal, which may be used for generating a truly random sequence (10) of bits is disclosed. The device comprises a noise source (11), and an amplifier (12) connected to the noise source (11). The device according noise source according to the invention is protected from interfering signals to provide high noise-interference ratio. Further, the present invention relates to an integrated circuit and an electronic apparatus comprising the device for generating a noise signal according to the invention.
Claims30
A device for generating a noise signal, comprising;
- a noise source for generating intrinsic noise, the noise source further comprising:
- a noisy amplifier cell having amplifying means;
- a load coupled to the amplifying means and a power supply;
- and
- a tail-current source coupled to grounding means and to the amplifying means.
2 more elements
Dependencies are inferred from the claim text.