Oscillators – Frequency stabilization – Temperature or current responsive means in circuit
Reexamination Certificate
2007-03-07
2009-11-17
Pascal, Robert (Department: 2817)
Oscillators
Frequency stabilization
Temperature or current responsive means in circuit
C331S002000, C331S057000, C374S170000
Reexamination Certificate
active
07619486
ABSTRACT:
An integrated circuit fabricated in a multiple oxide process can be used to provide a temperature-insensitive circuit. The temperature-insensitive circuit can be a ring oscillator; this ring oscillator can be used as a low-cost integrated reference frequency to monitor and to modify the behavior of the integrated to produce the desired results. In some embodiments, the reference oscillator output can be compared to second oscillator output where the second oscillator performance is temperature-sensitive. The comparison result can be monitored and processed to power down the integrated circuit.
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Goodley James E
Liu Justin
Pascal Robert
XILINX Inc.
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