Title :
Lowpass double-sampling switched-current sigma-delta modulator
Author :
Garcia, M.A. ; Espinosa, G. ; Lopez, D.B.
Author_Institution :
Inst. Nacional de Astrofisica, Opt. y Electron., Puebla, Mexico
Abstract :
This paper presents a double-sampling switched-current integrator which is used to implement a second-order sigma-delta modulator. The effects of the non-ideal behavior of switched-current circuits can be summarized in a signal-dependent and independent error. Leaky integrators are the result of the signal-dependent error. It is shown that the double-sampling integrator can reduce the leak factor to the half
Keywords :
integrating circuits; sigma-delta modulation; signal sampling; switched current circuits; double-sampling switched-current integrator; leak factor; low-pass sigma-delta modulator; signal-dependent error; signal-independent error; CMOS process; Circuits; Decision support systems; Delta-sigma modulation; Digital modulation; Frequency; Nonlinear optics; Optical modulation; Sampling methods; Signal sampling;
Conference_Titel :
Circuits and Systems, 1999. 42nd Midwest Symposium on
Conference_Location :
Las Cruces, NM
Print_ISBN :
0-7803-5491-5
DOI :
10.1109/MWSCAS.1999.867206
