Wireless Audio Link IC BH1417F Multimedia ICs

Wireless Audio Link IC BH1417F  Multimedia ICs
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 = 25°C, In measurement circuit.)
Parameter
Symbol
Limits
Unit
VCC
+7.0
V
Pin8,12
Supply voltage
VIN-D
−0.3 to VCC+0.3
V
Pin15,16,17,18
VOUT-P
−0.3 to VCC+0.3
V
Pin7
Pd
450
Tstg
−55 to +125
Date input voltage
Phase comparator output voltage
Conditions
Power dissipation
Storage temperature
∗
mW
°C
∗ Derating : 4.5mW/°C for operation above Ta=25°C.
!Recommended operating conditions (Ta = 25°C)
Symbol
Min.
Typ.
Max.
Unit
Operating supply voltage
VCC
4.0
−
6.0
V
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
τ PRE
−
µs
Pin2,21
MHz
Pin9,11
−
155
88.9
107.9
VCC
V
Pin15,16,17,18
−
0.2VCC
V
Pin15,16,17,18
Parameter
Transmission frequency(200kHz step)
fTX
Control terminal "H" level input voltage
VIH
−
87.7
106.7
0.8VCC
Control terminal "L" level input voltage
VIL
GND
−
Conditions
Pin8,12
1/2
BH1417F
Multimedia ICs
!Application circuit
US BAND (88.0MHz∼89.2MHz)
10µ
+
1µ
22
50k
+
∗27p
∗27p
7.6MHz
150p
2200p
0.1µ
21
20
19
18
17
16
15
14
13
12
PLL VCC
L-CH
+
1µ
GND
GND
VCC
2
3
4
5
6
7
8
0.01µ
9
10
1000p
11
33
+
360
GFWB3
(SOSHIN)
ANT
GND
FEM10C-2F6 (SUMIDA)
20k
33p
+
1µ
10µ
2200p
1µ
150p
1
+
1000p
1
R-CH
RF GND
82
50k
+
82
1µ
33p
MPX
10k
330p 82p
KV-1471E
(TOKO)
0.047µ
3.3k
10k
2.2k
10k
10µ
+
3.3k
VT
2200p
100µ
+
2SD2142K
(ROHM)
100
+
100µ
GND
VCC
!External dimensions (Units : mm)
13.6±0.2
12
1
11
1.8±0.1
0.11
0.3Min.
7.8±0.3
5.4±0.2
22
1.27
0.4±0.1
0.15±0.1
0.1
SOP22
2/2
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0
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