View BD3812F1_4894019.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Sound Processors for Home Theater Systems
2ch Electronic Volume
BD3812F
No.10081EAT03
Description BD3812F is an electronic volume having volume, gain amplifier functions necessary for applications in AV receivers, home theatre systems, min-component systems and so forth. Having a chip select terminal, it can be controlled until 4 chips with common bus line. Features 1) Residual noise : 1.2Vrms {dynamic range : 131dB (IHF-A)} 2) 2ch independent volume (0 to -103dB, MUTE 1dB/step) 3) 8ch at maximum available in combination of any of BD3811K1, BD3813KS, BD3814FV, BD3815KS (6ch volume) in common bus line 4) It can be controlled until 4 chips with common bus line at the same time 5) Maximum output voltage : 4.2Vrms (Vcc=7, VEE=-7V, RL=10k) 6) 2-line serial control (for both 3.3V and 5V) 7) Built-in Output gain amplifier for adjustment of output signal voltage (0, 6 to 18dB, 2dB/step) 8) Output mute controllable by serial data and external control terminal Applications AV receivers, home theater systems, mini-component systems, etc. Absolute maximum ratings (Ta=25) Parameter Powewr supply voltage Input signal voltage Power dissipation Operating temperature range Storage temperature range
*1
Symbol VCC VEE VIN Pd Topr Tastg
Ratings 7.5 -7.5
*1
Unit V V mW
VCC+0.3 to VEE-0.3 450*2 20 to +75 55 to +125
*2
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. Over Ta25C, reduce at the rate of 4.5mW/C. When installed on the standard board (size: 70x70x1.6mm).
Operating conditions It must function normally at Ta25C. Parameter Operating source voltage Symbol VCC VEE Min. 5 -7.3 Ratings Typ. 7 -7 Max. 7.3 -5 Unit V
www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved.
1/9
2010.06 - Rev.A
BD3812F
Technical Note
Electrical characteristics Ta=25, VCC=7V, VEE-7V, f=1kHz, Vin=1Vrms, RL=10k, Rg=600, Master volume=0dB, Output gain=0dB , unless otherwise specified. Limits Parameter Unit Conditions Symbol Min. Typ. Max. Circuit current VCC VEE IQ -6 -2 2 -2 0 6 2 mA No signal
Output voltage gain
Gv
dB
Measure : Pin14, 13 Measure : Pin14, 13 BW=40030kHz Measure : Pin14, 13 THD=1% Measure : Pin 14, 13 Rg=0, BW=IHF-A Measure : Pin1, 3 Measure : Pin13(OUT2) Rg=0, BW=IHF-A Reference : Pin14(OUT1)=1Vrms Measure : Pin14(OUT1) Rg=0, BW=IHF-A Reference : Pin13(OUT2)=1Vrms Measure : Pin 14, 13 Vin=3Vrms Measure : Pin 14, 13 0 to -53dB, Vin=3Vrms Measure : Pin 14, 13 -54 to -103dB, Vin=3Vrms Measure : Pin 14, 13 BW=IHF-A, Vin=3Vrms Measure : Pin 14, 13 Vin=0.4Vrms Measure : Pin 14, 13 Vin=0.4Vrms
Total harmonic distortion ratio
THD
0.005
0.09
%
Maximum output voltage
Vomax
3.4
4.2
Vrms
Output noise voltage
Vno
1.2
5
Vrms
Input impedance Cross talk between channels 1ch2ch Cross talk between channels 2ch1ch Volume control range
Rin
20
30
40
k
CTC12
-100
-70
dB
CTC21
-100
-70
dB
GVR
-106
-103
-100
dB
Volume set error 1
VE1
-2
0
2
dB
Volume set error 2
VE2
-3
0
3
dB
Maximum attenuation
Vmin
-118
-105
dB
Output gain control range
GOG
16
18
20
dB
Output gain set error
GOE
-2
0
-2
dB
* This product is not of "anti radiation design".
www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved.
2/9
2010.06 - Rev.A
BD3812F
Timing chart 1) Signal timing conditions Data is read on the rising edge of the clock. Latch is read on the falling edge of the clock. Latch signal must terminate with the LOW state. * To avoid malfunctions, clock and data signals must terminate with the LOW state.
Technical Note
CL (CLOCK)
90%
90%
90%
90%
twc
10%
twc
10% 10%
thd
ts
th
tsd
thd
tsl
thl
DA DATA LATCH
90%
twd
90%
twh
10% 10%
90%
90%
twl
90%
DATA
DATA
10%
LATCH Terminate with Low.
Fig.1 Limits Min. 2.0 2.0 2.0 2.0 1.0 1.0 1.0 1.0 1.0 1.0 Typ.
Parameter Minimum clock width Minimum data width Minimum latch width LOW hold width Data setup time (DATACLK) Data hold time(CLKDATA) Latch setup time(CLKLATCH) Latch hold time(DATALATCH) Latch low setup time Latch low hold time 2) Voltage conditions for control signal Parameter "H"input voltage "L" input voltage
Symbol twc twd twl twh tsd thd tsl thl ts th
Max.
Unit s s s s s s s s s s
Condition Vcc=57.3V VEE=-5-7.3V
Limits Min. 2.2 0 Typ. Max.(Vcc) 5.5 1.0
Unit V V
www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved.
3/9
2010.06 - Rev.A
BD3812F
3) Basic configuration of control data format Input direction MSB D16 Data D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3
Technical Note
LSB D2 D1 D0
Data
Select Address
Control data format Input direction D16 D15 D14 D13 D12 D11 Data Master Volume 2ch Data D16 * D15 * D14 * D13 * D12 * D11 *
Select Address D10 D9 D8 D7 D6 D5 D4 D3 D2 1 D4 D3 D2 1 D1 1 D1 1 D0 0 D0 1
Master Volume 1ch D10 * D9 * D8 * D7 * D6 * D5
Output gain amp
* is 0 or 1. By changing the setting of select address, 4 control data formats can be selected. Do not set the select address data to other than specified above.
At power on, initialize all the data. Input direction MSB LSB MSB Data
"L" shows latch.
LSB L
L
Data
After power on, in the second time or after, only data you want to change can be set. (Example) When to change bus Input direction MSB LSB Data
"L" shows latch.
L
www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved.
4/9
2010.06 - Rev.A
BD3812F
4) SEL terminal setting By determining the SEL terminal voltage, select address can be fixed. An example of the SEL terminal voltage setting method is shown below. Setting P1 Condition P2 Condition Setting of SEL(12pin) Terminal SEL(12pin) Terminal Voltage(V)
Technical Note
Select Address D2 D1
P1
Setting 1
VEE
12
VEE
VEE
0
0
20k VCC
P1
Setting 2
VCC
VEE
12 10k
P2
VCC/3+2xVEE/3 VEE
0
1
10k VCC Setting 3 VCC VEE 12 20k
P1 P2
VCC/3 VEE
1
0
P1
Setting 4
VCC
12
VCC
VCC
1
1
SEL terminal voltage is DGND standard. When to use several chips of BD3812F Select address can be changed by setting SEL terminal (12pin), therefore, up to 4 chips can be used on a same bus line. When to use one chip or two chips of this IC, use the setting 1 and the setting 4. In this case, the terminal voltage of 12pin may be VCC or VEE, therefore external resistor of 12pin is unnecessary. When to use BD3812F and BD3811K1 at the same time By using BD3812F and BD3811K1 at the same time, independent control of 8ch volume can be made. And control is available on a same bus line. In this case, be sure to set the SEL terminal setting to "setting 4".
www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved.
5/9
2010.06 - Rev.A
BD3812F
Application circuit
Technical Note
10 IN1 1 14 OUT1
AGND
2
13
OUT2
IN2 10
3
12
SEL
AGND VEE
4
11
DGND MUTE
5 47
10
AGND VCC
6 47 7
LOGIC
9
DA
8
CL
UNIT RESISTOR : CAPACITOR : F Fig.2 Reference data
2.5
CIRCUIT CURRENT (mA)
2 1.5 1
8 6 4
OUTPUT VOLTAGE (Vrms)
VCC
10
10
1
GAIN(dB)
0.5 0 -0.5 -1 -1.5 -2 -2.5 0 2 4 6 8 10
2 0 -2 -4
0.1
VEE
0.01
-6 -8 -10 10 100 1000 10000 100000
0.001 0.001 0.01 0.1 1 10
POWER SUPPLY (V)
FREQUENCY (Hz)
INPUT VOLTAGE (Vrms)
Fig.3 Circuit current - Power supply
Fig.4 Voltage gain - Frequency
Fig.5 Output voltage - Input voltage
10
20
1
15
THD+N (%)
0.1
GAIN (dB)
10
0, 618dB 2dB/step
0.01
5
0.001
0
0.0001 0.001 0.01 0.1 1 10
-5 10 100 1000 10000 100000
INPUT VOLTAGE (Vrms)
FREQUENCY (Hz)
Fig.6 THD+N - Input voltage
Fig.7 Output gain - Frequency
www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved.
6/9
2010.06 - Rev.A
BD3812F
Technical Note
Notes for use (1) Numbers and data in entries are representative design values and are not guaranteed values of the items. (2) Although we are confident in recommending the sample application circuits, carefully check their characteristics further when using them. When modifying externally attached component constants before use, determine them so that they have sufficient margins by taking into account variations in externally attached components and the Rohm LSI, not only for static characteristics but also including transient characteristics. (3) Absolute maximum ratings If applied voltage, operating temperature range, or other absolute maximum ratings are exceeded, the LSI may be damaged. Do not apply voltages or temperatures that exceed the absolute maximum ratings. If you think of a case in which absolute maximum ratings are exceeded, enforce fuses or other physical safety measures and investigate how not to apply the conditions under which absolute maximum ratings are exceeded to the LSI. (4) VEE potential Make the VEE pin voltage such that it is the lowest voltage even when operating below it. Actually confirm that the voltage of each pin does not become a lower voltage than the VEE pin, including transient phenomena. (5) Thermal design Perform thermal design in which there are adequate margins by taking into account the allowable power dissipation in actual states of use. (6) Shorts between pins and misinstallation When mounting the LSI on a board, pay adequate attention to orientation and placement discrepancies of the LSI. If it is misinstalled and the power is turned on, the LSI may be damaged. It also may be damaged if it is shorted by a foreign substance coming between pins of the LSI or between a pin and a power supply or a pin and a GND. (7) Operation in strong magnetic fields Adequately evaluate use in a strong magnetic field, since there is a possibility of malfunction. (8) Serial control For the CL and DA terminals, the patterned and other wirings should be routed not to cause interference with the analog-signal-related lines. (9) About power ON/OFF (a) At power ON/OFF, a shock sound will be generated and, therefore, use MUTE on the set. (b) When turning on power supplies, VEE and VCC should be powered on simultaneously or VEE first; then followed by VCC. If the VCC side is started up first, an excessive current may pass VCC through VEE. (10) Function switching For the functions except master volume, use MUTE on the set. (11) Reduction of switching noise when changing volume from -3dB to -4dB In order to reduce switching noise when changing volume from -3dB to -4dB, after switching the switch of -4dB step, change the switch of -1dB step by -1dB.
www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved.
7/9
2010.06 - Rev.A
BD3812F
Thermal derating characteristic
500 450mW
Technical Note
400 Power Dissipation Pd mW)
300
200
100
0 0 25 50 Ta( ) 75 100 125
Fig.8 BD3812 ROHM standard board packaging time value Board size : 70 x 70 x 1.6mm Raw material : FR4 glass epoxy board (copper area 3% or below)
www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved.
8/9
2010.06 - Rev.A
BD3812F
Ordering part number
Technical Note
B
D
3
Part No.
8
1
2
F
-
E
2
Part No.
Package F:SOP14
Packaging and forming specification E2: Embossed tape and reel
SOP14

8.7 0.2 (MAX 9.05 include BURR)
14 8
Tape Quantity Direction of feed
0.3MIN
Embossed carrier tape 2500pcs E2
The direction is the 1pin of product is at the upper left when you hold
6.20.3
4.40.2
( reel on the left hand and you pull out the tape on the right hand
)
1
7
0.15 0.1
1.50.1
0.11
1.27
0.4 0.1
0.1
1pin
(Unit : mm)
Direction of feed
Reel
Order quantity needs to be multiple of the minimum quantity.
www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved.
9/9
2010.06 - Rev.A
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
www.rohm.com (c) 2010 ROHM Co., Ltd. All rights reserved.
R1010A

▲Up To Search▲

Price & Availability of BD3812F1

	To Download BD3812F1 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .