This Texas Instruments circuit is from the 80's. However, it can be implemented with modern operating systems. The power supply must be symmetrical.
May 6, 2015 - Mouser Electronics, Inc., the global authorized distributor with the newest...
This circuit is from a National Semiconductor manual, appearing elsewhere on this site. The...
August 2016 - It can be obtained from Mouser Electronics the new operational amplifiers series...