IIIE 20352
INSTITUTO DE INVESTIGACIONES EN INGENIERIA ELECTRICA "ALFREDO DESAGES"
Unidad Ejecutora - UE
artículos
Título:
Post-Compensation of a CT First Order Sigma-Delta ADC Using PWL Dynamic Systems
Autor/es:
CHRISTIAN SCHMIDT; JUAN EDMUNDO COUSSEAU; JOSE LUIS FIGUEROA; RISTRO WICHMAN; STEFAN WERNER
Revista:
LATIN AMERICAN APPLIED RESEARCH
Editorial:
PLAPIQUI(UNS-CONICET)
Referencias:
Lugar: Bahia Blanca; Año: 2013 vol. 43 p. 287 - 293
ISSN:
0327-0793
Resumen:
An approach for compensating non-linearities in a continuous-time first-order sigma-delta converter with one bit quantization is presented. The proposed compensators are parallel nonlinear dynamic systems using piecewise linear static functions. A reduction of an order of magnitude is obtained in the measured squared error when compared to the uncompensated sigma-delta converter. Our results confirm a significant improvement in signal to noise and distortion ratio for single tone input signals and in spurious free dynamic range for multi-tone inputs.
