BD3812F-E2 Rohm Semiconductor, BD3812F-E2 Datasheet

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BD3812F-E2

Manufacturer Part Number
BD3812F-E2
Description
IC SOUND PROCESSOR 2CH 14SOP
Manufacturer
Rohm Semiconductor
Type
Sound Processorr
Datasheet

Specifications of BD3812F-E2

Applications
Home Theater
Mounting Type
Surface Mount
Package / Case
14-SOP (4.4mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Sound Processors for Home Theater Systems
2ch
Electronic Volume
●Description
●Features
●Applications
●Absolute maximum ratings (Ta=25℃)
●Operating conditions
© 2010 ROHM Co., Ltd. All rights reserved.
www.rohm.com
BD3812F
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.
AV receivers, home theater systems, mini-component systems, etc.
It must function normally at Ta=25°C.
Powewr supply voltage
Input signal voltage
Power dissipation
Operating temperature range
Storage temperature range
*1
*2
Operating source voltage
1) Residual noise : 1.2µVrms {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)
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=10kΩ)
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
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 Ta=25°C, reduce at the rate of 4.5mW/°C. When installed on the standard board (size: 70x70x1.6mm).
in common bus line
Parameter
Parameter
Symbol
Symbol
Tastg
VCC
VCC
VEE
Topr
VEE
VIN
Pd
Min.
-7.3
5
VCC+0.3 to VEE-0.3
-55 to +125
-20 to +75
Ratings
Ratings
450
7.5
Typ.
1/9
-7.5
-7
7
*1
*2
Max.
7.3
-5
Unit
mW
Unit
V
V
V
2010.06 - Rev.A
No.10081EAT03

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BD3812F-E2 Summary of contents

Page 1

... Electronic Volume BD3812F ●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 : 1.2µVrms {dynamic range : 131dB (IHF-A)} ...

Page 2

... BD3812F ●Electrical characteristics Ta=25℃, VCC=7V, VEE=-7V, f=1kHz, Vin=1Vrms, RL=10kΩ, Rg=600Ω, Master volume=0dB, Output gain=0dB , unless otherwise specified. Parameter VCC Circuit current VEE Output voltage gain Total harmonic distortion ratio Maximum output voltage Output noise voltage Input impedance Cross talk between channels 1ch→ ...

Page 3

... 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 avoid malfunctions, clock and data signals must terminate with the LOW state. 90% ...

Page 4

... BD3812F 3) Basic configuration of control data format Input direction MSB D16 D15 D14 D13 Data ・Control data format Input direction D16 D15 D14 D13 Data ① Master Volume 2ch D16 D15 D14 D13 Data ② changing the setting of select address, 4 control data formats can be selected. ...

Page 5

... 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”. ...

Page 6

... BD3812F ●Application circuit 10µ 1 IN1 2 AGND 3 IN2 10μ 4 AGND 47μ 6 AGND 47µ ●Reference data 2.5 VCC 2 1.5 1 0.5 0 -0.5 -1 VEE -1 POWER SUPPLY (V) Fig.3 Circuit current - Power supply 10 1 0.1 0.01 0.001 0.0001 0.001 0.01 0 INPUT VOLTAGE (Vrms) Fig.6 THD+N - Input voltage www.rohm.com © ...

Page 7

... BD3812F ●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 ...

Page 8

... BD3812F ●Thermal derating characteristic 500 450mW 400 300 200 100 0 0 BD3812 ROHM standard board packaging time value Board size : 1.6mm Raw material : FR4 glass epoxy board (copper area 3% or below) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved 100 Ta( ℃ ) Fig ...

Page 9

... BD3812F ●Ordering part number Part No. Part No. SOP14 8.7 ± 0.2 (MAX 9.05 include BURR 0.4 ± 0.1 1.27 0.1 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved Package Packaging and forming specification F:SOP14 E2: Embossed tape and reel <Tape and Reel information> ...

Page 10

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 ...

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