Pseudo-random noise signal generator

Details Pseudo-random noise signal generator Pseudo-random noise signal generator

1992-01-29

1993-09-07

Mis, David

Oscillators

Electrical noise or random wave generator

H03B 2900

Patent

active

052433030

ABSTRACT:
A noise generating device comprises a generator (1) including a shift register (1a) which performs shift operations to sequentially shift a bit in an input stage to a next higher significant stage. An exclusive-OR circuit (1b) performs exclusive-OR operations between a pair of bits from selected stages of the shift register and feeds back to the input stage of the shift register. A filter (2) receives the pseudo-random data and outputs an analog signal. The filter comprises an operational amplifier (2a). Respective outputs of the stages of the shift register are alternately applied to non-inverting and inverting inputs of the operational amplifier through respective resistors (R1, . . . ,R23).

REFERENCES:
patent: 3742381 (1973-06-01), Hurd
patent: 4218749 (1980-08-01), Babaud et al.
patent: 4296384 (1981-10-01), Mishima
patent: 4719643 (1988-01-01), Beeman
patent: 4855944 (1989-08-01), Hart
patent: 5153532 (1992-10-01), Albers et al.
"Op Amplifier: Basis and Application" by N. Fujii, pp. 52-55 (with English translation) Nov. 1982.

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