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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 Supply voltage Symbol VCC Limits +7.0 -0.3 to VCC+0.3 -0.3 to VCC+0.3 450
Unit V V V mW Pin8,12
Conditions
Date input voltage Phase comparator output voltage
Power dissipation Storage temperature
VIN-D VOUT-P
Pd Tstg
Pin15,16,17,18 Pin7
-55 to +125
C
Derating : 4.5mW/C for operation above Ta=25C.
!Recommended operating conditions (Ta = 25C)
Parameter Operating supply voltage Symbol VCC Min. 4.0 -40 - 20 - 87.7 106.7 0.8VCC GND Typ. - - - - - - - - Max. 6.0 +85 -10 15k 155 88.9 107.9 VCC 0.2VCC Unit V C dBV Hz s 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
VIN-A
fIN-A PRE fTX VIH VIL
1/2
BH1417F
Multimedia ICs
!Application circuit US BAND (88.0MHz89.2MHz)
10 +
0.1
27p 27p
2200p
150p
1
50k
+
22
21
20
19
18
17
16
15
7.6MHz
14
13
12
PLL VCC
L-CH
+ 1
GND
GND 1
50k
+
VCC
RF GND
R-CH
1
1
2
2200p 150p
3
+
4
1
5
+
6
7
0.01
8
1000p
9
10
1000p
11
360
82 82
+ 1
GFWB3 (SOSHIN)
ANT
10
33
GND
33p 20k
FEM10C-2F6 (SUMIDA) 33p
MPX 330p 82p 10 + 10k
10k
KV-1471E (TOKO)
10k
0.047
2.2k
3.3k VT
2200p 2SD2142K (ROHM)
100
100 +
+ 100
GND VCC
!External dimensions (Units : mm)
13.60.2
22 12
7.80.3 5.40.2
1
11
1.80.1
0.150.1 0.1
0.11
1.27
0.40.1
SOP22
0.3Min.
3.3k
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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