BA1442A - AM radio / FM IF stereo system IC
338 Audio ICs BA1442A 339 Audio ICs BA1442A 340 Audio ICs BA1442A FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 5V, FM IF MPX: fin = 10.7MHz, 400Hz modulation, 22.5kHz dev (30%), 19kHz 7.5kHz dev (10%) AM: fin = 1000kHz, fm = 400Hz 30%) FMeasurement circuit 341
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 reference voltage supply is provided to ensure good frequency stability in the shortwave bands. 4) Good FM stability.
