Title :
A micropower chopper-correlated double-sampling amplifier with 2µV standard deviation offset and 37nV/√Hz input noise density
Author :
Belloni, Massimiliano ; Bonizzoni, Edoardo ; Fornasari, A. ; Maloberti, Franco
Author_Institution :
Univ. of Pavia, Pavia, Italy
Abstract :
A chopper ripple-free circuit with input noise density of 37 nV/√Hz is presented. The CMOS scheme chops the input and demodulates the result after amplification with CDS. Offset temperature dependence is better than 0.03 μV/°C. The analog current consumption is 12.8 μA with supplies ranging from 1.8 V to 5 V. The noise efficiency factor is 5.5.
Keywords :
CMOS analogue integrated circuits; amplifiers; choppers (circuits); current 12.8 μA; input noise density; micropower chopper-correlated double-sampling amplifier; standard deviation offset; voltage 1.8 V to 5 V; 1f noise; Capacitors; Choppers; Density measurement; Frequency; Low-frequency noise; Noise measurement; Sampling methods; Semiconductor device noise; Voltage;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-6033-5
DOI :
10.1109/ISSCC.2010.5434043
