Current supply circuit, ring oscillator, nonvolatile...

Details Current supply circuit, ring oscillator, nonvolatile... Current supply circuit, ring oscillator, nonvolatile...

2007-03-13

2007-03-13

Chang, Joseph (Department: 2817)

Oscillators

Ring oscillators

C331S185000

Reexamination Certificate

active

10930801

ABSTRACT:
A current supply circuit is disclosed, which comprises a first circuit configured to generate a first current having a positive dependence with respect to a power supply voltage and not depending upon a variation in temperature and in threshold value of a transistor used, a second circuit configured to generate a second current having a positive dependence greater than that of the first current with respect to the power supply voltage and not depending upon a variation in temperature and in threshold value of a transistor used, and a third circuit configured to subtract the second current form the first current to generate a third current having a negative dependence with respect to the power supply voltage.

REFERENCES:
patent: 6414516 (2002-07-01), Labram et al.
patent: 6549154 (2003-04-01), Isobe et al.
patent: 2003/0076179 (2003-04-01), Branch et al.

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