Title :
A new technique for automatic error correction in ΣΔ modulators
Author :
Ortmanns, Maurits ; Gerfers, Friedel ; Manoli, Yiannos
Author_Institution :
Sci-worx GmbH, Hannover, Germany
Abstract :
This paper presents a new technique for an automatic error correction in sigma-delta (ΣΔ) converters for the first time. Especially intended for the detection and correction of integrator gain-errors in cascaded continuous-time modulators, the technique can also be used to correct errors induced by finite opamp gain-bandwidth (GBW) and adopted for correction of the same errors in discrete-time, switched capacitor implementations.
Keywords :
error correction; sigma-delta modulation; ΣΔ modulator automatic error correction; cascaded continuous-time modulators; discrete-time switched capacitor converters; finite opamp gain-bandwidth induced errors; integrator gain-error correction; integrator gain-error detection; sigma-delta converters; Analog circuits; Capacitors; Computer architecture; Delta-sigma modulation; Digital filters; Digital modulation; Energy consumption; Error correction; Noise shaping; Quantization;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465143
