LEVEL SHIFTER HAVING A CASCODE CIRCUIT AND DYNAMIC GATE CONTROL
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United States of America Patent
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Issued Date -
May 6, 2010
app pub date -
Nov 6, 2009
filing date -
Nov 6, 2008
priority date (Note) -
Abandoned
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Abstract
A level shifter for converting an input signal (in) from a first operating voltage range (I) having a first ground potential (VSS1) and a first operating potential (VDD1) into an output signal (out) in a second operating voltage range (II) having a second ground potential (VSS2) and a second operating potential (VDD2). An input circuit (1) receives the input signal and an output circuit (2) provides the output signal (out), where the input circuit includes a parallel circuit made up by a first cascode circuit and a second cascode circuit, and the first and second cascode circuits each being formed by a first transistor in the source circuit and a second transistor in the gate circuit, a dynamic control being provided for the second transistors.
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