3V FM IF AM TUNER SYSTEM using KA2248
3V FM IF AM TUNER SYSTEM using KA2248
3V FM IF AM TUNER SYSTEM
The KA2248 is a monolithic integrated circuit
developed the for headphone stereo.
FUNCTIONS
AM SECTION: Converter, IF amplifier,
Detector, Tuning indicator
FM SECTION: IF amplfier, Quadrature detector,
Tuning indicator
FEATURES
Low quiescent current: AM: Iccq= 3mA, Vcc= 3V
FM: Iccq= 8mA, Vcc= 3V
Wide operating voltage range: Vcc= 1.8V~6V.
Built-in AM FM function switch.
Tuning indicator: direct LED driving
capability: 10mA (Max).
One terminal AM FM detector output.
A minimum number of external parts required.
