Built-in self-calibration (BISC) technique for regulation...

Details Built-in self-calibration (BISC) technique for regulation... Built-in self-calibration (BISC) technique for regulation...

2011-01-04

2011-01-04

Sterrett, Jeffrey L (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S281000, C323S349000

Reexamination Certificate

active

07863876

ABSTRACT:
A reference voltage regulation circuit (143) is provided in which one or more input voltage signals (Vref, Vref′) are selectively coupled to a configurable amplifier (114) which is coupled through a sample and hold circuit (120) to a voltage follower circuit (122) which is coupled in feedback to the configurable amplifier (114) for generating an adjusted output voltage at a circuit output (130), where the voltage follow circuit comprises a resistor divider circuit (126) that is controlled by a calibration signal (Cal<n:0>) generated by a counter circuit (128) selectively coupled to the output of the configurable amplifier when configured as a comparator for generating the calibration signal in response to a clock signal, where the calibration signal represents a voltage error component (Verror, Voffset) that is removed from the circuit output when the calibration signal is applied to the resistor divider circuit during normal operational.

REFERENCES:
patent: 6738298 (2004-05-01), Cioaca et al.
patent: 7200066 (2007-04-01), Krenzke et al.
patent: 2005/0077883 (2005-04-01), Walters
patent: 2009/0243571 (2009-10-01), Cook et al.

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