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BH1417F Multimedia ICs
1/2 Wireless Audio Link IC BH1417F
The BH1417F 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. Frequency is set for North America.
! !! !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 τ PRE fTX VIH VIL 20 − 87.7 106.7 0.8V CC GND Max. 6.0 +85 −10 15k 155 88.9 107.9 V CC 0.2VCC Typ. − − − − − − − − dBV Hz μs 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(200kHz step) Control terminal "H" level input voltage Control terminal "L" level input voltage