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PDF LV2285VB Data sheet ( Hoja de datos )
| Número de pieza | LV2285VB | |
| Descripción | FM Transmitter IC | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENA1494A
LV2285VB
Bi-CMOS IC
FM transmitter IC with
Stereo Modulation, Auto Sleep Function
Overview
The LV2285VB is IC for FM transmitter. This IC is chiefly composed of the following block. MPX block for stereo
modulation, RFVCO block for FM modulation, and PLL block for RF output frequency. At the result, this IC achieves FM
transmitter with low power consumption by 1chip.
Additionally, the auto sleep function is installed. This function automatically switches the standby and active according to
the state of the audio input. It is possible to achieve a more dynamic electric power reduction as a result.
Feature
• The function necessary for FM transmission has been integrated into 1chip.
• The best low current consumption operation for portable application
• The auto sleep function to reduce more dynamic current consumption
• General I2C I/F and, SANYO original audio control I/F is installed
Functions
• Audio: Stereo modulation using pilot tone system, Audio attenuation
• RF: VCO, programmable gain driver amplifier
• PLL: 70MHz to 110MHz 100kHz step
• Bus control: I2C I/F , Audio control I/F
• Regulator: 2.8V LDO regulator, Auto sleep function
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Maximum supply voltage
Maximum input voltage
VCC max
Vin max
Pin 6
Minimum input voltage
Vin min
Allowable power dissipation
Pd max
Ta ≤ 85°C, Mounted on a specified board.*
Operating temperature
Topr
Storage temperature
Tstg
* Specified board: 114.3mm × 76.1mm × 1.6mm, glass epoxy board.
Ratings
7.0
Vcc + 0.3
-0.3
500
-10 to 85
-55 to 150
Unit
V
V
V
mW
°C
°C
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
51111 SY 20110428-S00003/62409 MS 20090615-S00012 No.A1494-1/11
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
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Pin Function
Pin No.
Pin name
1 L-INPUT
LV2285VB
DC voltage (V)
Function
0 Left channel input. If audio source DC voltage
is not 0V, AC coupling capacitance is
required. Pre-emphasis capacitance and
resistance should be required.
2 L-CONT
1.2 Data input pin for Audio control.
External coupling capacitance is required.
3 GND
4 MPX+B
0
2.8 LDO regulator output.
External decoupling capacitance is required.
5 GND
6 VCC
7 COMPOSITE
OUT
0
3.3
Stereo modulated output.
8 CP OUT
Charge pump current output.
9 GND
0
Equivalent circuit
6
4
1
24
5
6
1kΩ
10kΩ
2
50kΩ
23
5
6
4
5
6
4
7
5
6
4
9.4kΩ
5.1kΩ
30μA
30μA
9
8
Continued on next page.
No.A1494-5/11
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
AC Test Circuit
LV2285VB
SW1 a
R-INPUT
+
+
VCEN
SW6
A
VCC
External CLOCK
SW5 INPUT
SW4
16MHz
b
76kHz
SDA SCL
24 23 22 21 20 19 18 17 16 15 14 13
SG INPUT
LV2285VB
1 2 3 4 5 6 7 8 9 10 11 12
SW2 a L-INPUT
+
b+
+
VCC
SW3
ab
RF OUT
Stereo DEC
LA3450
VA
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using
products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.
products described or contained herein.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt
safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not
limited to protective circuits and error prevention circuits for safe design, redundant design, and structural
design.
In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require the
export license from the authorities concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise,
without the prior written consent of SANYO Semiconductor Co.,Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the
SANYO Semiconductor Co.,Ltd. product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
for volume production.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellctual property rights which has resulted from the use of the technical information and products mentioned
above.
This catalog provides information as of May, 2011. Specifications and information herein are subject
to change without notice.
PS No.A1494-11/11
Datasheet pdf - http://www.DataSheet4U.net/
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