BH1416F
Audio ICs
Wireless Audio Link IC
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.
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).
Absolute maximum ratings
(Ta = 25擄C, In measurement circuit.)
Parameter
Supply voltage
Symbol
V
CC
Limits
+7.0
鈭?.3
to V
CC
+0.3
鈭?.3
to V
CC
+0.3
450
鈭?/div>
Unit
V
V
V
mW
Pin8,12
Conditions
Date input voltage
Phase comparator output voltage
Power dissipation
Storage temperature
V
IN-D
V
OUT-P
Pd
Tstg
Pin15,16,17,18
Pin7
鈭?5
to
+125
擄
C
鈭?/div>
Derating : 4.5mW/擄C for operation above Ta=25擄C.
Recommended operating conditions
(Ta = 25擄C)
Parameter
Operating supply voltage
Symbol
V
CC
Min.
4.0
鈭?0
鈭?/div>
20
鈭?/div>
76.8
88.0
0.8V
CC
GND
Typ.
鈭?/div>
鈭?/div>
鈭?/div>
鈭?/div>
鈭?/div>
鈭?/div>
鈭?/div>
鈭?/div>
Max.
6.0
+85
鈭?0
15k
155
78.0
89.2
V
CC
0.2V
CC
Unit
V
擄C
dBV
Hz
碌sec
MHz
V
V
Pin1,22
Pin1,22
Pin2,21
Pin9,11
Pin15,16,17,18
Pin15,16,17,18
Conditions
Pin8,12
Operating temperature
Audio input level
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
Topr
V
IN-A
f
IN-A
t
PRE
f
TX
V
IH
V
IL
1/2
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