Title :
On the implementation of input-feedforward delta-sigma modulators
Author :
Gharbiya, Ahmed ; Johns, D.A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont.
fDate :
6/1/2006 12:00:00 AM
Abstract :
This brief addresses some practical issues on the implementation of the input-feedforward delta-sigma modulators. First, the timing constraint imposed by the input-feedforward path is identified and a possible method to relax the constraint is proposed. Second, the drawbacks of the analog adder needed before the quantizer are explained and a method to eliminate the adder is proposed
Keywords :
adders; analogue-digital conversion; delta-sigma modulation; analog adder; analog-to-digital converters; input-feedforward delta-sigma modulators; Bandwidth; CMOS technology; Delta modulation; Filters; Helium; Linearity; Low voltage; Quantization; Timing; Transfer functions; Analog-to-digital; delta–sigma(; input-feedforward; oversampling;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2006.873829
