Title: Hybrid integrated impedance converter circuit

Abstract: A hybrid integrated impedance converter circuit comprising a frequency dependent negative resistance circuit, in which two operational amplifiers are included. Each of the two operational amplifiers has an output terminal and an inverting input terminal, with a negative feedback capacitor being connected between these terminals. The negative feedback capacitor is formed by a stray capacitance which arises between conductors connected to the output and inverting input terminals, which conductors are placed in close proximity to each other.

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Inventors: Suzuki, Toshiro (Hachioji, JP)

Application Number: 892420
Filing Date: 1978-03-31
Publication_date: 1980-06-17
Assignee: Hitachi, Ltd. (both of, JP); Hitachi Denshi Kabushiki Kaisha (both of, JP)
Primary Class(es): 333/217 330/107, 333/213
Other Classes:
US Patent Ref:

4091329	May, 1978	Fletcher et al.	307/230.
4091341	May, 1978	Greaves et al.	333/80.

Other Refs:
Primary Examiner: Gensler, Paul L.
Assistant Examiner:
Attorney: Craig & Antonelli