Title:
INTEGRATED FILTER CIRCUIT
Document Type and Number:
Japanese Patent JPS5535598
Kind Code:
A
Abstract:
The invention relates to an integrated filter circuit including a charge transfer device (CTD) transversal filter to which a sample-and-hold stage is post-connected. In such filters, a smoothing of the step-shaped signal output voltage emitted from the said stage is strived for. According to the invention, the smoothing ensues by means of a RC low pass which is realized by means of a "switched capacitor" circuit. This has two capacitors and two alternatively actuatable, electronic switches. The area of employment of the invention particularly embraces CTD transversal filters which are employed in systems with varying clock pulse frequencies.
Inventors:
HANSUIERUKU PUFURAIDERAA
Application Number:
JP11160979A
Publication Date:
March 12, 1980
Filing Date:
August 31, 1979
Export Citation:
Assignee:
SIEMENS AG
International Classes:
H03H15/02; H03H19/00; (IPC1-7): H03H15/02