Switched analog buffer (CB9315E)

This circuit was obtained from an application note from Analog Devices from the 90s. The components are from that time.

High Growth Rate Operational Amplifier L149 (CB15136E)
We found this circuit in the 1982 SGS linear integrated circuit manual. The L149 is not common today...
Overtemperature Alarm (CB26158E)
This circuit was found in the Electronics Experimenter Handbook from 1991. The sensor is a diode...
Instrumentation Amplifier (CB20985E)
This circuit is from a Linear Technology manual from the 90's. The integrated circuit is from the...