BD3883FS ROHM Co. Ltd., BD3883FS Datasheet

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BD3883FS

Manufacturer Part Number
BD3883FS
Description
Audio Sound Controller For Home Audio
Manufacturer
ROHM Co. Ltd.
Datasheet
Sound Processor Series for BOOM BOX / Mini-component Stereo
Sound Processor Built-in
3-band Equalizer
BD3403FV, BD3861FS, BD3883FS
●Description
●Features
●Applications
●Product lineup
The Sound Processor has a built-in 3 Band Equalizer and can be controlled with a 2-wire serial. It is suited for a sound
quality design which incorporates various functions, ranging from source selectors, such as BOOM BOX, Mini-audio
systems and Micro-audio systems to preamplifiers at the front stage of the power amp.
BOOM BOX, mini-audio systems, and micro-audio systems.
Operating Voltage
Range
Equalizer
Front Volume
Rear Volume
Input Gain
Microphone Input
Surround
Package
1) High S/N, achieved by implementing 2-stage configuration of Front Volume and Rear Volume.
2) Provides surround and rear volume with Soft-switch to reduce a shock sound during switching functions(BD3883FS).
3) Volume and tone implemented with the resistance ladder circuit (to achieve high performance with low noise and low
4) Uses the BiCMOS process that achieves low-consumption current, which contributes to an energy-saving design.
5) SSOP-A32 and SSOP-B40 are used for the packages. Input pins and output pins are organized and separately laid out
distortion).
Using the BiCMOS process, has the advantage in quality over the scaling down of the internal regulators and heat
controls.
so as to keep the signal flows in one direction which consequently, simplify pattern layout of the set board and
decrease the board dimensions.
Parameter
(BASS, MIDDLE, TREBLE)
0 to -59dB/1dB step, -∞dB
0 to -30dB/2dB step
0 to 26dB/2dB step
TECHNICAL NOTE
BD3403FV
SSOP-B40
6.5 to 9.5V
3 band
(BASS, MIDDLE, TREBLE)
0 to -59dB/1dB step, -∞dB
-50 to -70dB/4dB step,
0 to -50dB/2dB step
0 to 26dB/2dB step
BD3861FS
SSOP-A32
6.5 to 9.5V
3 band
-∞dB
(BASS, MIDDLE, TREBLE)
0 to -87dB/1dB step, -∞dB
0, 6, 12, 16, 20, 23, 26, 29dB
BD3883FS
6.5 to 9.5V
SSOP-A32
0, -10dB
3 band
Ver.B Oct.2005

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BD3883FS Summary of contents

Page 1

... High S/N, achieved by implementing 2-stage configuration of Front Volume and Rear Volume. 2) Provides surround and rear volume with Soft-switch to reduce a shock sound during switching functions(BD3883FS). 3) Volume and tone implemented with the resistance ladder circuit (to achieve high performance with low noise and low distortion) ...

Page 2

... Tstg Range *1 Reduced by 9.0 mW/°C over 25°C, when installed on the standard board (size: 70×70×1.6mm) for (BD3403FV). *2 Reduced by 9.5 mW/°C over 25°C, when installed on the standard board (size:70×70×1.6mm) for (BD3861FS,BD3883FS). ●Operating voltage range Device Name Symbol BD3403FV ...

Page 3

Item Output Volume Output Switching Step Maximum attenuation Surround Gain CH1→CH2 Surround Gain CH2→CH1 Bass Boost Gain Bass Cut Gain Bass Switching Step Middle Boost Gain Middle Cut Gain Middle Switching Step Treble Boost Gain Treble Cut Gain Treble Switching ...

Page 4

Item Input Voltage Gain 1 Input Voltage Gain 2 Input Gain Switching Step Input Total Harmonic Distortion Input Maximum Output Voltage Cross-talk between Selectors Input Impedance E Input SW Attenuation Input Volume 1 Input Volume 2 Volume Switching Step 1 ...

Page 5

... BD3883FS Ta=25°C, VCC=8V, f=1kHz, Vi=200mVrms, RL=10kΩ, Rg=600Ω, Input Selector=Ach, Input Gain=0dB, Volume=0dB, Bass=0dB, Middle=0dB, Treble=0dB, Surround=OFF, RECOUT=OFF, unless otherwise noted. Item Circuit Current Total Output Voltage Gain Total Harmonic Distortion Maximum Output Voltage Total Residual Noise Voltage Total Output Noise Voltage ...

Page 6

... Latch Low Set-up Time Latch Low Hold Time 2. Voltage Conditions for Control Signals (BD3403FV, BD3861FS) Item “H” Input Voltage “L” Input Voltage 3. Voltage Conditions for Control Signals (BD3883FS) Item “H” Input Voltage “L” Input Voltage 90% 90% twc twc ...

Page 7

Address 1 D10 D11 OUTPUT Volume 1 Address 2 D20 D21 INPUT Volume Address 3 D30 D31 Input Selector Address 4 D40 D41 Input Gain/Bass Address 5 D50 D51 Middle/Treble (BD3861FS) Address 1 D10 D11 ...

Page 8

... Data(2) Front Volume Data(3) Bass Gain D9 D8 Data(4) Middle Gain ・By changing the setting of Select Address, four different control formats are selectable. (BD3883FS) ・At power-on sequence, initialize all data. Example: ← Data input direction MSB LSB MSB Data(1) L Data(2) ・After power-on, for the second and subsequent times, only the necessary data can be selected for setting. ...

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Block diagram, application circuit, pin assignment (BD3403FV Vcc Fig.2 9/ RESISTANCE : Ω UNIT CAPACITANCE : F ...

Page 10

Vcc 24K 12K + + UNIT RESISTANCE : Ω Fig.3 10/16 + + + + + + + + + + + + + CAPACITANCE : F ...

Page 11

... When using RECOUT: 5.6k 4.7 μ 4.7 μ 0.01μ 0.01μ 0.01μ 0.01μ REC1 REC2 MNF1 MOUT1 Middle1 Treble1 Surround 0dB 0dB ~ ~ - 87dB - 87dB - ∞ - ∞ Vcc/2 Vcc/2 VIN 1 SEL 1 VIN2 SEL2 A 1 0.22µ 0.22µ 5.6k 5.6k 5.6k 0.1 0.1 μ ...

Page 12

... When using 2ndHPF: 5.6k 56k 56k 0.01µ 0.01µ 0.01µ 0.01µ REC1 REC2 MNF1 MOUT1 Middle1 f0=1kHz Treble1 fc=8.15kHz Surround 0dB 0dB ~ ~ -87dB -87dB -∞ -∞ Vcc/2 Vcc/2 VIN1 SEL1 VIN2 SEL2 A 1 0.1µ 0.1µ 0.1µ ...

Page 13

... FREQUENCY(Hz) Fig.8 Voltage Gain - Frequency 10 1 0.1 0.01 0.001 0.001 0.01 0 OUTPUT VOLTAGE(Vrms) Fig.11Total Harmonic Distortion ratio - Output Voltage (BD3883FS) 15 +12dB 10 -12dB~ +12dB 5 2dB/step 0 -5 -10 -12dB -15 10 100 1000 10000 100000 FREQUENCY(Hz) Fig.14 Treble Gain - Frequency (BD3403FV, BD3861FS) ...

Page 14

... Because SC and SI terminals are designed for inputting high-frequency digital signals, wiring and layout patterns should be routed as not to cause interference with the analog-signal-related lines Input external resistance (BD3883FS) To avoid a sudden noise into E Input, external resistance (4.7kΩ) should be connected as close as possible to the IC terminal. ...

Page 15

... Select Address, the time interval between the send operations must be set to 500 -600msec. Direction 15. Function setting while muting Volume (BD3883FS) While muting Volume, to avoid increasing residual noise, set Bass, Middle and Treble to 0dB, Surround to OFF, and Rear Volume to -10dB. SERIAL DATA 40~ ...

Page 16

... Part No. BD3403FV BD3861FS BD3883FS SSOP-B40 <Dimension> 13.6 ± 0 0.15 ± 0.1 0.1 0.65 0.22 ± 0.1 0.08 M SSOP-A32 <Dimension> 13.6 ± 0 0.15 ± 0.1 0.1 0.36 ± 0.1 0.8 The contents described herein are correct as of October, 2005 The contents described herein are subject to change without notice. For updates of the latest information, please contact and confirm with ROHM CO.,LTD. ...

Page 17

Appendix ● 本資料の一部または全部をロームの許可なく、 転載 ・ 複写することを堅くお断りします。 ● 本資料の記載内容は改良などのため予告なく変更することがあります。 ● 本資料に記載されている内容は製品のご紹介資料です。 ご使用にあたりましては、 別途仕様書を必ずご請求   のうえ、 ご確認ください。    ● 本資料に記載されております応用回路例やその定数などの情報につきましては、 本製品の標準的な動作や   使い方を説明するものです。 したがいまして、 量産設計をされる場合には、 外部諸条件を考慮していただき   ますようお願いいたします。 ● 本資料に記載されております製品の使用に関する応用回路例 ・ 情報 ・ 諸データは、 あくまで一例を示すも   のであり、 これらの使用に起因する工場所有権に関する諸問題につきましては、 ロームは一切その責任   を負いかねますのでご了承ください。 ● 本資料に記載されております製品の販売に関し、 その製品自体の使用 ・ 販売、 その他の処分以外にはローム   の所有または管理している工業所有権など知的財産権またはその他のあらゆる権利について明示的に   も黙視的にも、 その実施または利用を買主に許諾するものではありません。 ● 本資料に記載されております製品および技術のうち 「外国為替及び外国貿易法」 に該当する製品または技術 ...

Page 18

Appendix 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 ...

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