A high quality FM receiver circuit based on CXA1019 IC is shown here. CXA1019 is a bipolar silicon monolithic FM/AM radio receiver IC from Sony. Built in circuitries inside the CXA1019 include RF amplifier, mixer, oscillator, IF amplifier, quadrature detection circuit, tuning LED driver electronic volume control, detector etc. FM section of the IC is only utilized in this circuit. The IC can be powered from anything between 3 to 7V DC and can drive an 8 ohm loudspeaker. Circuit diagram. FM receiver circuit CXA1019 Circuit description. Inductors L1, L2 and capacitors C4, C6, C7 forms the tank circuit for the ICs built in oscillator section. The IF output available at pin 15 is grounded through resistor R1. C1 is the AC bypass capacitor for R1. Capacitor C16 is meant for ripple filtering. LED D1 is a tuning indicator. Output of the built-in detector stage (pin24) is coupled to the input (pin 25) of the built in AF amplifier stage through capacitor C19, POT R2 and capacitor C18. The POT R...