Title :
Designing Complex ΔΣ Modulators with Signal-Transfer Functions having Good Stop-Band Attenuation
Author :
Pandita, Bupesh ; Martin, Kenneth W.
Author_Institution :
Electr. & Comput. Eng., Toronto Univ., Ont.
Abstract :
This paper presents design methods for delta-sigma (ΔΣ) analog to digital (A/D) converters having signal-transfer functions (STFs) with improved out-of-band signal attenuation. The trade-off between the improved attenuation of the STF and achieving a noise-transfer function (NTF) that optimizes the SNR of the A/D converter is made explicit.
Keywords :
band-stop filters; delta-sigma modulation; transfer functions; ΔΣ modulators; noise-transfer function; signal-transfer functions; stop-band attenuation; Analog-digital conversion; Attenuation; Delta modulation; Design methodology; Dynamic range; Frequency; Signal design; Telephone sets; Transfer functions; Working environment noise;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378538
