Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2006-12-11
2009-12-29
Patel, Rajnikant B (Department: 2838)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S534000, C326S041000
Reexamination Certificate
active
07639067
ABSTRACT:
Voltage regulator circuitry is provided that exhibits a high power supply rejection ratio and a wide output voltage range. The voltage regulator circuitry can regulate power supply voltages for circuitry on a programmable logic device such as transistor body bias circuitry and configuration random-access-memory array circuitry. The voltage regulator circuitry includes an n-channel metal-oxide-semiconductor drive transistor that is coupled between a power supply voltage terminal and an output terminal. The n-channel metal-oxide-semiconductor drive transistor has a gate that receives a control signal from an operational amplifier. A boost circuit generates an elevated power supply voltage for the operational amplifier. A programmable voltage divider is coupled to the voltage regulator's output. The operational amplifier produces the control signal by comparing a feedback signal from the voltage divider to a reference voltage.
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Srinivas Perisetty, U.S. Appl. No. 11/369,664, filed Mar. 6, 2006.
Altera Corporation
Patel Rajnikant B
Ru Nancy Y.
Treyz G. Victor
Treyz Law Group
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