Single Radio Chip in T092 package
BA1404 Hi-Fi FM Stereo Transmitter IC
Rohm BA1404 Hi-Fi FM Stereo Transmitter
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Build your own fairly simple high quality stereo FM transmitter circuit as shown in the photo. The circuit is based on the IC BA1404 from ROHM Semiconductors. BA1404 is a monolithic FM stereo modulator that has built in stereo modulator, FM modulator, RF amplifier circuits. The FM modulator can be operated from 76 to 108MHz and the power supply for the circuit can be anything between 1.25 to 3 volts.
• Low operating voltage: VCC=1 - 3 V
• Low Quiescent Current: ICCO=3 -5 mA
• Low external components required
• One chip configuration containing FM & stereo modulator and transmitter
• Good frequency stability
• 38 KHz crystal provides rock solid frequency for the stereo encoder.
Parts list to build this circuit:
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Inductor 1.0 - 1.5uH
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