This filter was found in Texas Instruments documentation from the 1980s. The circuit uses a common operational amplifier and has its response curve in the figure.
September 2017 - Microchip's MCP6411 operational amplifiers for frequencies up to 1 MHz are in...
We found this circuit in a 70s publication. Transistors are general-purpose types of the time. The...
This receiver circuit was found in a Hands On Electronics from the 90s. The circuit uses a PLL...