Programmable amplifier device

Details Programmable amplifier device Programmable amplifier device

1992-05-21

1993-06-01

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including gain control means

330133, 330134, H03G 310

Patent

active

052163849

ABSTRACT:
An amplifier device has a gain programmable between 2.sup.n and 2.sup.n-1 in steps of 2.sup.p where p<n and n is the number of gain control bits. The device comprises a plurality of stages having two gain values selectable by a control bit and at least two identical stages having a different control bit. Each stage has a maximum gain less than 2.sup.n-1.

REFERENCES:
patent: 4213097 (1980-07-01), Chiu et al.
patent: 4554511 (1985-11-01), Braun
Neues aus der Technik, No. 1, Feb. 15, 1990, Wurzburg, Germany, p. 4; "Digital arbeitender Lautstarkeregler in einem Mehrstufenverstarker."
IBM Technical Disclosure Bulletin, vol. 14, No. 9, Feb. 1972, New York, US, pp. 2639-2640; D. Millican: "Four-level gain control stage."

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