We found this circuit in a documentation from the 90's. Information on the A/D converter was not given but types can be used according to the application.
This circuit was suggested by Signetics in 1980s documentation. The circuit makes use of the...
We found this circuit in a publication from the 1970s. The circuit has a logarithmic gain...
This circuit is from a 1967 RCA documentation. Components can be replaced with modern equivalents. The...