Voltage to current converter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 21, 2001
Grant Date -
N/A
app pub date -
Jan 10, 2000
filing date -
Jan 9, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A voltage to current converter comprises a first long tail pair comprising transistors whose emitters are connected via equal value resistors to a constant current source. The first long tail pair forms a main transconductance stage. A subsidiary or corrector transconductance stage is connected in anti-phase with the main stage. The corrector stage is based on another long tail pair comprising transistors whose emitters are connected via resistors to another constant current source. The linear part of the transconductance of the corrector stage is substantially less than that of the main stage but the non-linear part is substantially equal to that of the main stage. Thus, non-linear distortion can be substantially reduced.
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