Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Patent
1997-10-14
2000-04-11
Nuton, My-Trang
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
326 80, H03K 190175
Patent
active
060492422
ABSTRACT:
The invention relates to a voltage reference source used to control an overvoltage tolerant input/output buffer for a mixed voltage bus system. The voltage source comprises a voltage tracking circuit having a first input receiving a variable voltage, and a second input receiving a reference voltage, the voltage tracking circuit being adapted to generate an output voltage in response to the difference between the variable voltage and the reference voltage, wherein where the variable voltage is less than the reference voltage, the output voltage is held at substantially zero volts. When the variable voltage exceeds the reference voltage, the output tracks the voltage at the variable voltage input.
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Lutley James
Pant Sandeep
Cypress Semiconductor Corp.
Nuton My-Trang
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