Sinusoid signal generator for on-chip impedance spectroscopy

Sinusoid signal generator for on-chip impedance spectroscopy

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 wave...

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Hauptverfasser: Rairigh, D., Xiaowen Liu, Chao Yang, Mason, A.J.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Chemical sensors
Clocks
Counting circuits
Electrochemical impedance spectroscopy
Frequency
Instruments
Sensor arrays
Signal design
Signal generators
Token networks
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Beschreibung
Zusammenfassung: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.
ISSN:0271-4302
2158-1525
DOI:10.1109/ISCAS.2009.5118174