Differential stage particularly for active filters
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United States of America Patent
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Apr 28, 1987
Grant Date -
N/A
app pub date -
May 21, 1984
filing date -
Jun 3, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Differential stage comprising a high input dynamic range differential circuit formed by first and second transistors whose emitter electrodes are connected together and to a constant current source through respective resistors, their base electrodes having an input signal applied thereto, and their collector electrodes supplying respective collector currents. The stage further comprises a dual-single converter circuit receiving the collector currents at its input and supplying a stage output current, said converter circuit including at least one variable current source and having a conversion factor which varies as a function of the variable source current.
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