Title :
Delta-sigma converters using frequency-modulated intermediate values
Author :
Hovin, M. ; Olsen, AIlf ; Lande, Tor Sverre ; Toumazou, Chris
Author_Institution :
Dept. of Inf., Oslo Univ., Norway
fDate :
30 Apr-3 May 1995
Abstract :
This paper describes a new first and second-order delta-sigma modulator (DSM) concept where the first integrator is extracted and implemented by a FM oscillator with the modulating signal as the input. The result is a simple DSM with no need for DACs, allowing straightforward multi-bit quantization. Without the FM oscillator, the modulator becomes a F/D converter with delta-sigma noise shaping
Keywords :
frequency modulation; modulators; quantisation (signal); sigma-delta modulation; FM oscillator; delta-sigma converters; delta-sigma modulator; delta-sigma noise shaping; first-order type; frequency-modulated intermediate values; integrator; multibit quantization; second-order type; Circuits; Delta modulation; Educational institutions; Frequency conversion; Frequency modulation; Informatics; Noise shaping; Oscillators; Quantization; Sampling methods;
Conference_Titel :
Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2570-2
DOI :
10.1109/ISCAS.1995.521479
