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PDF BD3814FV Data sheet ( Hoja de datos )
| Número de pieza | BD3814FV | |
| Descripción | 6ch Electronic Volume | |
| Fabricantes | ROHM Semiconductor | |
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Sound Processors for Home Theater Systems
6ch
Electronic Volume
BD3814FV
No.10081EAT05
●Description
BD3814FV is a 1-chip sound processor incorporating such functions as volume, bass, and treble, necessary for AV receivers,
home theater systems, and mini-audio systems. This IC adopts the Bi-CMOS process, and realizes low distortion, low noise,
and a wide dynamic range.
●Features
1) Dynamic range: 132dB (tone bypath, VOL = MUTE, IHF-A)
2) Master volume 6ch independent (0 to -95dB, MUTE 1dB/step)
3) Low current consumption design achieved by adopting the BiCMOS process
4) Maximum output voltage: 4.3Vrms (Vcc=7V, VEE=-7V, RL=10kΩ)
5) Built-in 2 OP amplifiers
6) 2-line serial control (for both 3.3V and 5V)
●Applications
AV receivers, home theater systems, mini-audio systems, TVs etc.
●Absolute maximum ratings (Ta=25℃)
Parameter
Symbol
Power supply voltage
VCC
VEE
Input signal voltage
VIN
Ratings
7.5*1
-7.5
VCC+0.3 to VEE-0.3
Unit
V
V
Power dissipation
Pd
900*2
mW
Operating temperature range
Topr
-20 to +75
℃
Storage temperature range
Tastg
-55 to +125
℃
*1 Even in the specified range of Power Supply Voltage, applying voltage only to the VCC side may cause an excessive current
to give a permanent damage to the IC.
When starting up power supplies, VEE and VCC should be powered on simultaneously or VEE first; then followed by VCC.
*2 Reduced by 9 mW/C over 25C, when installed on the standard board (size: 70x70x1.6mm).
●Operating conditions
Must function normally at Ta=25℃.
Parameter
Symbol
Operating source voltage
VCC
VEE
Ratings
Min. Typ. Max.
5 7 7.3
-7.3 -7
-5
Unit
V
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/10
2010.06 - Rev.A
1 page  
BD3814FV
Technical Note
3. Basic configuration of control data format
Data input direction
MSB
LSB
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
Data
Select Address
・Control data format
Data input direction
Select Address
Data D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
① Treble
Bass
Tone * * * * * 0 0 0
Data D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
② Master Volume FRch
Master Volume FLch
001
Data D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
③ Master Volume SRch
Master Volume SLch
010
Data D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
④ Master Volume Cch
Master Volume SWch
011
By changing select address, 4 control data formats can be selected.
Do not set the select address data to any format other than that specified above.
At power-on sequence, initialize all data.
* is 0 or 1.
Example:
Data input direction
MSB LSB MSB LSB
MSB LSB
MSB
LSB
Data① L Data② L Data③ L Data④ L
“L” shows latch.
After power-on, for the second and subsequent times, only the necessary data can be selected for setting
Example: When to change bus,
Input direction
MSB LSB
Data① L
“L” shows latch.
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
5/10
2010.06 - Rev.A
5 Page 
Datasheet
Notice
Precaution on using ROHM Products
1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
intend to use our Products in devices requiring extremely high reliability (such as medical equipment (Note 1), transport
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU CHINA
CLASSⅢ
CLASSⅣ
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3. Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
special or extraordinary environments or conditions. If you intend to use our Products under any special or
extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4. The Products are not subject to radiation-proof design.
5. Please verify and confirm characteristics of the final or mounted products in using the Products.
6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual
ambient temperature.
8. Confirm that operation temperature is within the specified range described in the product specification.
9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2. In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the
ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
11 Page | ||
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