Part Number
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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
|
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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