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BD3870FS データシート(PDF) 1 Page - Rohm

部品番号 BD3870FS
部品情報  Sound Processors with Built-in 3-band Equalizers
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メーカー  ROHM [Rohm]
ホームページ  http://www.rohm.com
Logo ROHM - Rohm

BD3870FS データシート(HTML) 1 Page - Rohm

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www.rohm.com
2010.10 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
Sound Processors for BOOM BOX / Mini-component Stereo
Sound Processors
with Built-in 2-band Equalizers
BD3870FS,BD3871FS,BD3872FS,BD3873FS
Description
The Sound Processor with built-in 2 Band Equalizer, incorporates functions required for BOOM BOX and mini-component
systems, such as input selector, input gain amp, volume, surround, tone (bass, treble), and loud speaker equalizer
(BD3872FS only). These functions can be controlled through the two-wire serial control.
Features
1) Using external components, center frequencies and Q factors of the bass characteristics are flexible.
2) Providing a mute switch onto one of the input pins allows cross-talk suppression.
3) A surround function can be constructed without external components.
4) Energy-saving design resulting in low current consumption, by utilizing the BiCMOS process
Applications
BOOM BOX, mini-audio systems, and micro-audio systems.
Line up matrix
Parameter
BD3870FS
BD3871FS
BD3873FS
BD3872FS
Input Gain
0, 6, 12, 18dB
24, 26, 28dB
18, 21, 24, 27dB
0, 5, 10, 19, 21,
23, 26, 28dB
Loud Speaker Equalizer (SEQ)
No
No
No
Yes
Input Selector
Three inputs
Three inputs
Three inputs
Five inputs
Volume
0 to -87dB/
1dB step, -
dB
0 to -87dB/
1dB step, -
dB
0 to –87dB/
1dB step, -
dB
0 to -87dB/
1dB step, -
dB
Equalizer
2 band
(Bass, Treble)
2 band
(Bass, Treble)
2 band
(Bass, Treble)
2 band
(Bass, Treble)
Surround
Yes
Yes
Yes
Yes
Serial Control
Two-wire serial
Two-wire serial
Two-wire serial
Two-wire serial
Package
SSOP-A24
SSOP-A24
SSOP-A24
SSOP-A32
Absolute maximum ratings (Ta=25℃)
Prameter
Symbol
Ratings
Unit
BD3870FS
BD3871FS
BD3873FS
BD3872FS
Power Supply Voltage
Vcc
10
10
10
10
V
Power Dissipation
Pd
800 *
1
800 *
1
800 *
1
950 *
2
mW
Operating Temperature Range
Topr
-25 to +75
-25 to +75
-25 to +75
-25 to +75
Storage Temperature Range
Tstg
-55 to +125
-55 to +125
-55 to +125
-55 to +125
*
1 Reduced by 8.0 mW/℃ at 25℃ or higher, when installed on the standard board (Size: 70×70×1.6mm).
*
2 Reduced by 9.5 mW/℃ at 25℃ or higher, when installed on the standard board (Size: 70×70×1.6mm).
Operating voltage range
Prameter
Symbol
Ratings
Unit
BD3870FS
BD3871FS
BD3873FS
BD3872FS
Operating Voltage Range
Vcc
4.5 to 9.5
4.5 to 9.5
4.5 to 9.5
4.5 to 9.5
V
*It must function normally at Ta=25℃.
No.10086EAT02


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