We found this circuit in an old documentation. Its purpose is to turn on warning lights when the vehicle in a garage touches or passes a sensing bar preventing it from hitting the wall.
The integrated circuit is not common nowadays since the configuration was obtained in Motorola's Linear...
This amplifier was found in Burr-Brown documentation from the 90's. The gain can be programmed by resistor...
In the figure we have an IF amplifier step using a MOSFET. The circuit was found in a 1980s...