Real-time programmable low power SC bandpass filter

A real-time programmable switched capacitor (SC) second-order bandpass filter is presented. It is based on the voltage inverter switch (VIS) principle using inverse recharging devices. These devices are realized with dynamic amplifiers in order to achieve low power dissipation. The filter contains o...

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Bibliographic Details
Published inIEEE journal of solid-state circuits Vol. 17; no. 3; pp. 499 - 506
Main Authors Hosticka, B.J., Herbst, D., Hoefflinger, B., Kleine, U., Pandel, J., Schweer, R.
Format Journal Article
LanguageEnglish
Published IEEE 01.06.1982
Subjects
Band pass filters
Circuits
CMOS technology
Frequency
Inverters
MOS capacitors
Parasitic capacitance
Power dissipation
Switches
Voltage
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Summary:A real-time programmable switched capacitor (SC) second-order bandpass filter is presented. It is based on the voltage inverter switch (VIS) principle using inverse recharging devices. These devices are realized with dynamic amplifiers in order to achieve low power dissipation. The filter contains only grounded or virtually grounded network capacitances and, therefore, it is insensitive to the parasitic capacitances between the bottom plate of the implemented MOS capacitors and the substrate. The circuit offers digital programming capability (two Q factors and three center frequencies) and low power dissipation (185 /spl mu/W at a sampling frequency of 8 kHz and with a power supply voltage of 10 V). The filter has been integrated in CMOS metal-gate technology.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.1982.1051766