BH1416F Datasheet, PDF (1/3 Pages) Rohm – Wireless Audio Link IC

Audio ICs
Wireless Audio Link IC
BH1416F
BH1416F
The BH1416F 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.
zApplications
Wireless speakers, Personal computer(sound board), Game machine, CD changer, Car TV, Car navigation
zFeatures
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).
zAbsolute maximum ratings (Ta = 25°C, In measurement circuit.)
Parameter
Symbol
Limits
Unit
Supply voltage
VCC
+7.0
V
Date input voltage
VIN-D −0.3 to VCC+0.3
V
Phase comparator output voltage VOUT-P −0.3 to VCC+0.3
V
Power dissipation
Pd
450^∗
mW
Storage temperature
Tstg
−55 to +125
°C
∗ Derating : 4.5mW/°C for operation above Ta=25°C.
Conditions
Pin8,12
Pin15,16,17,18
Pin7
zRecommended operating conditions (Ta = 25°C)
Parameter
Symbol Min. Typ. Max. Unit
Conditions
Operating supply voltage
VCC
4.0
−
6.0
V Pin8,12
Operating temperature
Topr
−40
−
+85
°C
Audio input level
VIN-A
−
−
−10
dBV Pin1,22
Audio input frequency band
fIN-A
20
−
15k
Hz Pin1,22
Pre-emphasis time constant set up range t PRE
−
−
Transmission frequency(200kHz step)
fTX
76.8
88.0
−
Control terminal "H" level input voltage
VIH
0.8VCC
−
155 µsec Pin2,21
78.0
89.2
MHz Pin9,11
VCC
V Pin15,16,17,18
Control terminal "L" level input voltage
VIL
GND
−
0.2VCC
V Pin15,16,17,18
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