Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilization Export

@article{citeulike:1401476, abstract = {In linear IC's fabricated in a low-voltage CMOS technology, the reduction of the dynamic range due to the dc offset and low frequency noise of the amplifiers becomes increasingly significant. Also, the achievable amplifier gain is often quite low in such a technology, since cascoding may not be a practical circuit option due to the resulting reduction of the output signal swing. In this paper, some old and some new circuit techniques are described for the compensation of the amplifier's most important nonideal effects including the noise (mainly thermal and 1/f noise), the input-referred dc offset voltage as well as the finite gain resulting in a nonideal virtual ground at the input}, author = {Enz, C. C. and Temes, G. C.}, citeulike-article-id = {1401476}, citeulike-linkout-0 = {http://dx.doi.org/10.1109/5.542410}, citeulike-linkout-1 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=542410}, comment = {Extensive analysis of autozeroing (CDS) and chopper stabilization for reducing low-frequency noise (flicker and input offset)}, doi = {10.1109/5.542410}, journal = {Proceedings of the IEEE}, keywords = {chopper, chopper\_stabilization, correlated\_double\_sampling, opamp}, number = {11}, pages = {1584--1614}, posted-at = {2008-11-08 00:41:44}, priority = {4}, title = {Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilization}, url = {http://dx.doi.org/10.1109/5.542410}, volume = {84}, year = {1996} }

TY - JOUR ID - citeulike:1401476 L3 - citeulike-article-id:1401476 N2 - In linear IC's fabricated in a low-voltage CMOS technology, the reduction of the dynamic range due to the dc offset and low frequency noise of the amplifiers becomes increasingly significant. Also, the achievable amplifier gain is often quite low in such a technology, since cascoding may not be a practical circuit option due to the resulting reduction of the output signal swing. In this paper, some old and some new circuit techniques are described for the compensation of the amplifier's most important nonideal effects including the noise (mainly thermal and 1/f noise), the input-referred dc offset voltage as well as the finite gain resulting in a nonideal virtual ground at the input IS - 11 JF - Proceedings of the IEEE EP - 1614 TI - Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilization VL - 84 SP - 1584 KW - chopper KW - chopper_stabilization KW - correlated_double_sampling KW - opamp N1 - Extensive analysis of autozeroing (CDS) and chopper stabilization for reducing low-frequency noise (flicker and input offset) AU - Enz, CC AU - Temes, GC PY - 1996/// UR - http://dx.doi.org/10.1109/5.542410 ER -