Reference ladder auto-calibration circuit for an analog to digit

Details Reference ladder auto-calibration circuit for an analog to digit Reference ladder auto-calibration circuit for an analog to digit

1994-05-20

1995-11-28

Williams, Howard L.

Coded data generation or conversion

Converter calibration or testing

341154, 341155, H03M 110

Patent

active

054712084

ABSTRACT:
An auto-calibrated reference resistor ladder network is disclosed which is suitable for use in a precision analog to digital converter. Resistors in the ladder are connected to an auto-calibration circuit which continually measures the potential developed across each of the connected resistors and adjusts the resistance of the resistor to match the measured potential to a reference potential. In the disclosed circuit, the reference potential is the potential developed across a defined one of the resistors.

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