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BH1415F Audio ICs
1/3 Wireless Audio Link IC BH1415F
The BH1415F is a FM stereo transmitter IC that transmits simple configuration. The IC consists of a stereo modulator for generating stereo composite signals and a FM transmitter for broadcasting a FM signal on the air. The stereo modulator generates a composite signal which consists of the MAIN, SUB, and pilot signal from a 38kHz oscillator. The FM transmitter radiates FM wave on the air by modulating the carrier signal with a composite signal.
! !! !Recommended operating conditions (Ta = 25°C) Audio input level ParameterSymbol Min. Unit V CCV V V °C 4.0 −40 − Conditions V IN-A fIN-A Topr t PRE fTX VIH VIL 20 − 70 0.8V CC GND Max. 6.0 +85 −10 15k 155 120 V CC 0.2VCC Typ. − − − − − − − − dBV Hz μsec MHz Pin8,12 Pin1,22 Pin1,22 Pin2,21 Pin9,11 Pin15,16,17,18 Pin15,16,17,18 Operating supply voltage Operating temperature Audio input frequency band Pre-emphasis time constant set up range Transmission frequency Control terminal "H" level input voltage Control terminal "L" level input voltage