Title :
Offset reduction in current-mode microsystems
Author :
Bakker, Anton ; Huijsing, Johan H.
Author_Institution :
Fac. of Electr. Eng., Delft Univ. of Technol., Netherlands
Abstract :
An overview of offset reduction techniques is given. It will be shown that in current-mode systems chopped amplifiers are favorable over autozeroed amplifiers. A chopped amplifier with internal low-pass filter is presented. This new technique is applied in a very low-power temperature microsystem. This thermometer consumes less than 10 μW at a sample-rate of 2 samples/sec
Keywords :
amplifiers; choppers (circuits); low-pass filters; microsensors; thermometers; 10 muW; autozeroed amplifier; chopped amplifier; current-mode microsystem; internal low-pass filter; low-power temperature microsystem; offset reduction; thermometer; CMOS technology; Capacitors; Choppers; Circuit noise; Delta-sigma modulation; Energy consumption; Frequency; Low pass filters; Sampling methods; Temperature sensors;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.541972
