We found this circuit in a 1973 publication. The circuit lets frequencies below 480 kHz pass through with an output impedance of 1k. The circuit can be implemented with current operational.
This is the minimum amplifier configuration with the LM380 and can provide an output of up to 2.5...
The circuit shown in the figure is suggested by Microchip (www.microchip.com), being built around...
We found this circuit in the 1994 National Semiconductor Linear Applications Handbook. The circuit...