Precision power-on reset circuit

Details Precision power-on reset circuit Precision power-on reset circuit

1998-06-02

1999-09-28

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

H03L 700

Patent

active

059594772

ABSTRACT:
A precision power-on reset circuit which is highly insensitive to temperature and process variations includes a self-biased proportional-to-absolute-temperature (PTAT) current generator 4, a base-emitter (V.sub.BE) voltage detector 6, and a bipolar complementary metal oxide semiconductor (BiCMOS) inverter 8, which generates a power-on reset pulse for resetting an application circuit when a power supply voltage is turned on. The power-on reset circuit may further include a complementary metal oxide semiconductor (CMOS) buffer 10 coupled to the BiCMOS inverter 8 to isolate the application circuit from currents in the power-on reset circuit.

REFERENCES:
patent: 5477176 (1995-12-01), Chang et al.
patent: 5497112 (1996-03-01), Hoang

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