Functions:

FM IF Amplifier

Quadrature Detector

Audio Amplifier

Muting Circuit

Signal–Meter Driver

AFC

Center–Meter Driver

Muting Controller (Bandwidth & Level)

Center–Meter Short Circuit for AM Band (Pin15)

IF Amp Killer for AM Band (Pin15)

Features:

High Signal–to–Noise Ratio

High Sensitivity

Large Muting Attenuation

Stable Operation using Full–Balanced Differential

Triplex Amplifier

High Linearity of Signal Meter

Operational Input Level of Muting is Adjustable by Controlling External Resistance