Title :
Novel oversampled A/D converters based on error spectrum shaping
Author :
Rao, Y. V Ramana ; Mohan, P. V Ananda
Author_Institution :
Dept. of Electr. Eng., Regional Eng. Coll., Trichi, India
Abstract :
Error spectrum shaping (ESS) is a technique for shaping the quantization noise in digital filter structures. This technique is shown to be easily applicable to oversampled Σ-Δ type analog-digital converters. The application of the ESS technique to first-order and second-order Σ-Δ converters as well as MASH topology is demonstrated. The effects of nonideal capacitor values and finite amplifier gains in switched capacitor (SC) implementations are analyzed
Keywords :
digital filters; quantisation (signal); sigma-delta modulation; switched capacitor networks; Σ-Δ type analog-digital converters; MASH topology; digital filter structures; error spectrum shaping; finite amplifier gains; nonideal capacitor values; oversampled A/D converters; quantization noise; switched-capacitor implementations; Clocks; Delay; Electronic switching systems; Finite impulse response filter; Noise shaping; Quantization; Sampling methods; Switched capacitor circuits; Switching circuits; Transfer functions;
Conference_Titel :
Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1281-3
DOI :
10.1109/ISCAS.1993.393695
