Method of converting an analog signal in an A/D converter utiliz

Details Method of converting an analog signal in an A/D converter utiliz Method of converting an analog signal in an A/D converter utiliz

1998-08-03

2000-10-10

Tokar, Michael

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341154, H03M 112

Patent

active

061306355

ABSTRACT:
A method for operating a circuit in an analog to digital converter, including providing a resistor network (205) having a plurality of resistor banks (200) connected together, each resistor bank of the plurality of resistor banks having a plurality of resistors (210) connected together in series and a plurality of first switches (220) for selecting a node (215) between adjacent resistors, and a plurality of second switches (235) for selecting a chosen resistor bank of the plurality of resistor banks. A first switch is closed in a chosen resistor bank to charge a parasitic capacitance (250), and a second switch is closed after closing the first switch, and after charging the parasitic capacitance in the chosen resistor bank.

REFERENCES:
patent: 4618852 (1986-10-01), Kelley et al.
patent: 4794374 (1988-12-01), Koike
patent: 4875046 (1989-10-01), Lewyn
patent: 5717396 (1998-02-01), Gross, Jr. et al.

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