BH1417F Multimedia ICs 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. Applications Wireless speakers, Personal computer(sound board), Game machine, CD changer, Car TV, Car navigation Features 1) It is possible to improve the timbre because it has the pre-emphasis circuit, limiter circuit, and the low-pass filter circuit. 2) Built-in pilot-tone system FM stereo modulator circuit. 3) The transmission frequency is stable because it has a PLL system FM transmitter circuit. 4) PLL controls data input in parallel (4bits, 14ch for North America). Absolute maximum ratings (Ta = 25C, In measurement circuit.) Parameter Symbol Limits Unit Conditions Supply voltage VCC +7.0 V Pin8,12 Date input voltage VIN-D 0.3 to VCC+0.3 V Pin15,16,17,18 Phase comparator output voltage VOUT-P 0.3 to VCC+0.3 V Pin7 Power dissipation Pd 450 mW Storage temperature Tstg 55 to +125 C Derating : 4.5mW/C for operation above Ta=25C. Recommended operating conditions (Ta = 25C) Parameter Symbol Min. Typ. Max. Unit Conditions VCC 4.0 6.0 V Pin8,12 Operating supply voltage 40 +85 Operating temperature Topr C 10 Audio input level VIN-A dBV Pin1,22 Audio input frequency band fIN-A 20 15k Hz Pin1,22 PRE 155 s Pin2,21 Pre-emphasis time constant set up range 87.7 88.9 Transmission frequency(200kHz step) fTX MHz Pin9,11 106.7 107.9 VCC Control terminal level input voltage VIH 0.8VCC V Pin15,16,17,18 GND 0.2VCC Control terminal level input voltage VIL V Pin15,16,17,18 1/2 BH1417F Multimedia ICs Application circuit US BAND (88.0MHz89.2MHz) 10 + 0.1 1 22 21 20 19 18 17 16 15 14 13 12 + PLL VCC L-CH + 1 GND GND 1 VCC RF GND + 123456789 10 11 R-CH GFWB3 0.01 1000p (SOSHIN) 1 + + 360 1 ANT + GND FEM10C-2F6 (SUMIDA) 33p MPX 330p 82p KV-1471E (TOKO) 10 10k + 0.047 3.3k VT 100 100 + + 100 GND VCC External dimensions (Units : mm) 13.60.2 22 12 1 11 0.150.1 0.1 1.27 0.40.1 SOP22 2/2 1.80.1 7.80.3 0.11 5.40.2 50k 50k 0.3Min. 2200p 2200p 150p 150p 10 1 10k 20k 27p 33p 33 7.6MHz 2.2k 27p 10k 2SD2142K (ROHM) 1000p 2200p 82 3.3k 82