Start-up circuit for stable power-on of semiconductor memory dev

Details Start-up circuit for stable power-on of semiconductor memory dev Start-up circuit for stable power-on of semiconductor memory dev

1994-11-07

1996-05-21

Cunningham, Terry

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327 63, 327198, H03K 1722

Patent

active

055193471

ABSTRACT:
The present invention provides a start-up circuit including a differential amplifier receiving the internal power supply voltage as a source voltage and being driven by the reference signal, such that a level for the power supply voltage is accurately detected. The start-up circuit may also include a driver amplifying an output signal from the differential amplifier to a control signal, and a delay circuit receiving the control signal, delaying the control signal for a time period, and applying the delayed control signal to the differential amplifier.

REFERENCES:
patent: 4142118 (1979-02-01), Guritz
patent: 4245150 (1981-01-01), Driscoll et al.
patent: 4634905 (1987-01-01), Campbell, Jr.
patent: 4716322 (1987-12-01), D'Arrigo et al.
patent: 5144159 (1992-09-01), Frisch et al.
patent: 5214316 (1993-05-01), Nagai
patent: 5378936 (1995-01-01), Kokubo et al.

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