H - Electricity – 03 – H
Patent
H - Electricity
03
H
333/52
H03H 7/01 (2006.01) H03H 11/04 (2006.01) H03H 11/12 (2006.01) H03K 4/02 (2006.01) H03K 5/01 (2006.01) H03K 5/1252 (2006.01) H03M 1/00 (2006.01)
Patent
CA 1100198
FILTER FOR DIGITAL-TO-ANALOG CONVERTER Abstract of the Disclosure The present invention relates to a non-linear filter for attenuating spurious electronic signals. The filter is comprised of a receiver for receiving the signal to be attenuated and a first amplifier coupled to the receiver for amplifying the signals to be attenuated. The amplifier is provided with a unit for providing the amplified signals as double-ended signals. A second amplifier is coupled to the first amplifier to receive the double-ended signals for providing a single-ended output signal. The second amplifier includes a constant current source for providing a constant current. A storage unit is coupled to the second amplifier and to receive at least a portion of the constant current for producing a terminal voltage thereacross in accordance with the constant current received. An output unit is provided for providing an output signal coupled to the storage unit and to the second amplifier. Feedback is provided between the receiver and the output unit for controlling the amplitude of the terminal voltage.
296543
Rieger Michael L.
Singer Martin D.
Kirby Eades Gale Baker
Tektronix Inc.
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