Level shifting circuit

Details Level shifting circuit Level shifting circuit

1981-05-26

1984-10-09

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330110, 330256, 330257, 330284, 330288, 330289, 455188, H03F 345, H03G 318

Patent

active

044764391

ABSTRACT:
A level shifting circuit capable of operating with a wide range of impedances of a signal source without backflow of current and without a buffer circuit. A feedback element is coupled between an inverting input and an output of an operational amplifier. An output of a current source is connected to the inverting input of the operational amplifier while the signal to be level shifted is applied to the non-inverting input thereof. The current source may be a current mirror circuit and a temperature compensating diode may be coupled in series with the feedback element.

REFERENCES:
patent: 4015149 (1977-03-01), Tsunekawa et al.
patent: 4055812 (1977-10-01), Rosenthal

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