Repetitive cell matching technique for integrated circuits

Details Repetitive cell matching technique for integrated circuits Repetitive cell matching technique for integrated circuits

1990-06-19

1992-12-29

Pellinen, A. D.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

H03M 136

Patent

active

051755505

ABSTRACT:
An integrated-circuit A-to-D converter having repetitive cells which are designed to be matched, but which are subject to uncontrolled mismatches adversely affecting performance. In the disclosed embodiment, the cells all include resistors (of equal ohmic value) carrying currents (designed to be of equal value) producing corresponding output signals. To avoid the effects of cell mismatch on the output signals, a network of equal-valued resistors is added to the circuit, with each network resistor connected between corresponding ends of adjacent pairs of the cell resistors.

REFERENCES:
patent: 4924227 (1990-05-01), Mangelsdorf
patent: 4928103 (1990-05-01), Lane

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