Title :
Sinusoid signal generator for on-chip impedance spectroscopy
Author :
Rairigh, Daniel ; Liu, Xiaowen ; Yang, Chao ; Mason, Andrew J.
Author_Institution :
Electr. & Comput. Eng., Michigan State Univ., East Lansing, MI, USA
Abstract :
Compact signal generators are a necessary component for many biomedical and chemical sensor microsystems. This paper presents a signal generator with precise digital frequency control that is 62% smaller the previous designs. The signal generator can produce analog sine waves and digital cosine waves from 4.8 Hz to 39 kHz with a SFDR greater than 99 dB. In a 0.5 mum CMOS process the total signal generator area is 361 mum times 1048 mum.
Keywords :
CMOS integrated circuits; electric impedance; waveform generators; CMOS process; analog sine waves; digital cosine waves; digital frequency control; on-chip impedance spectroscopy; sinusoid signal generator; size 0.5 mum; Chemical sensors; Clocks; Counting circuits; Electrochemical impedance spectroscopy; Frequency; Instruments; Sensor arrays; Signal design; Signal generators; Token networks;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5118174
