Features: 1) The S curve characteristic of the FM detector can be used for upper heterodyne ( N curve) operation.2) Audio high cut and low cut can be used to improve the AM fidelity.3) A reference voltage supply is provided to ensure good frequency stability in the shortwave bands.4) Good FM st...
BA1442A: Features: 1) The S curve characteristic of the FM detector can be used for upper heterodyne ( N curve) operation.2) Audio high cut and low cut can be used to improve the AM fidelity.3) A referenc...
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The BA1442A is an AM radio and FM IF stereo system IC developed for radio cassette players. The FM circuit is comprised of a differential IF amplifier, a double-balance type quadrature detector, and a PLL-type stereo MPX circuit. The AM circuit is comprised of a local oscillator, a double-balanced mixer, an IF amplifier, a detector, and an AGC circuit.