Startup circuit for analog integrated circuit applications

Details Startup circuit for analog integrated circuit applications Startup circuit for analog integrated circuit applications

2005-02-22

2005-02-22

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S539000

Reexamination Certificate

active

06859077

ABSTRACT:
A startup circuit is used for producing a startup current for an analog integrated circuit device. The startup circuit includes a first portion including a diode component and a capacitance component. The first portion is configured to function as a power supply backup and generate a backup point voltage. The startup circuit includes a second portion including a current mirror component and a feedback component. The second portion is configured to generate a startup current using the backup point voltage, such that the startup current is provided based on the backup point voltage as a power supply voltage increases from a power off condition or a transient, thereby keeping an analog circuit alive during transients in power supply for fast recover and operation.

REFERENCES:
patent: 6356064 (2002-03-01), Tonda
patent: 6515524 (2003-02-01), Sterrantino et al.

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