IIIE   20352
INSTITUTO DE INVESTIGACIONES EN INGENIERIA ELECTRICA "ALFREDO DESAGES"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Post-compensation of a CT First-order sigma-delta ADC Using PWL Dynamic Systems
Autor/es:
CHRISTIAN A. SCHMIDT; J. E. COUSSEAU; J. L. FIGUEROA; R. WICHMAN; S. WERNER
Lugar:
Oro Verde
Reunión:
Congreso; RPIC; 2011
Institución organizadora:
RPIC
Resumen:
An approach for compensating nonlinearities 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 spurius free dynamic range for multi-tone inputs.