Circuit for adjusting a voltage level in a semiconductor device

Details Circuit for adjusting a voltage level in a semiconductor device Circuit for adjusting a voltage level in a semiconductor device

1998-10-06

2000-09-19

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

327206, 327 68, 327 74, H03K 3286

Patent

active

061218065

ABSTRACT:
A level adjusting circuit for controlling a voltage supplied to a load such as a semiconductor device, which comprises a voltage level detecting circuit, a reference potential generating circuit for generating a pair of reference potential values to be output into the voltage level detecting circuit, and a monitor pad for drawing out the voltage supplied to the load, wherein the reference potential values are respectively used to compare with the voltage to thereby output a signal for starting supply of the voltage and a signal for ceasing the supply of the voltage under a usually used condition; and the voltage level detecting circuit is to compare either one of the reference potential values with the voltage or the other reference potential value with the voltage at a time under a testing condition, whereby the reference potential generating circuit can accurately be adjusted to change the reference potential values to render the voltage in a range permissible for operation of the load.

REFERENCES:
patent: 5130635 (1992-07-01), Kase
patent: 5602503 (1997-02-01), Muto
patent: 5694072 (1997-12-01), Hsiao et al.
patent: 5736894 (1998-04-01), Suwa

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