The integrated circuit used is uncommon today. The circuit was obtained in the Philips integrated circuits manual of 1990. The reference voltage-range is from 0.5 to 9.0 V.
This circuit is from the Linear Applications Handbook of the National Semiconductor of 1994. The...
We found this circuit in a 2002 documentation. As it uses still common CMOS integrated circuits, it can...
The presented circuit uses an LM3900, transconductance operational amplifier. It was found in the...