Linear integrated circuit voltage drop generator having a base-10-emitter voltage independent current source therein
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United States of America Patent
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Nov 21, 1989
Issued Date -
N/A
app pub date -
Feb 15, 1989
filing date -
Aug 28, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A voltage drop generator having a current source having reduced sensitivity to transistor base-emitter voltage process and temperature induced variations, is used to generate a precise voltage drop across a resistor. Transistor emitter area ratios are selected and an additional resistance is used in conjunction with the selected ratios to reduce the sensitivity (of the output voltage drop) to base-emitter voltages, to provide substantial improvement in process and temperature dependent output variations.
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