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AF120

Part Number	AF120
Manufacturer	National Semiconductor
Description	Generalized Impedance Converter
Published	Sep 25, 2017
Detailed Description	~National ~ Semiconductor Active Filters AF120 Generalized Impedance Converter, GIC General Description The AF120 con...
Datasheet	AF120 PDF File

Overview

~National ~ Semiconductor Active Filters AF120 Generalized Impedance Converter, GIC General Description The AF120 contains a pair: of operational amplifiers and four precision thin film resistors connected as shown below.
A gyrator may be formed by adding one external capacitor; or a frequency dependent negative resistance FDN R may be formed by adding two external capacitors.
In the gyrator mode, ZIN a: jWC, which is equivalent to a grounded inductor.
In the FDNR mode, ZIN a: - 1/ w 2 C1C2.
The AF120 may also be used in pairs to form ungrounded inductors or inductor networks.
Thus, with appropriate transformations, the G IC makes possible an active realization of any low-frequency ladder...

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