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Primary Examiner: Kaufman, Nathan
Assistant Examiner:
Attorney: Klarquist, Sparkman, Campbell, Leigh, Hall & Whinston

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Title: Wideband differential amplifier

Abstract: A wideband differential amplifier comprises a pair of differentially connected control devices, for example transistors, having a pair of semiconductor junction input devices coupled thereto for receiving complementary input currents. The input devices exhibit logarithmic characteristics substantially compensating for nonlinear properties of the pair of differentially connected control devices, whereby a linear rather than a nonlinear amplified current output is produced. Multipliers, cascaded amplifiers, and other useful circuit configurations are provided.

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Inventors: Gilbert, Barrie (Portland, OR, US)

Application Number: 540499
Filing Date: 1975-01-13
Publication_date: 1976-01-06
Assignee: Tektronix, Inc. (Beaverton, OR)
Primary Class(es): 330/257 330/260, 330/307
Other Classes:
US Patent Ref:

3848139

Nov, 1974

Hol, Jr.

330/38.

Other Refs: Other References: keller, J. P. -- Linear Ic's, part 3, Differential Amplifiers at Work, Integrated Electronics)-Electronics, Sept. 18, 1967, pp. 96-105.