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PDF BD3491FS Data sheet ( Hoja de datos )
| Número de pieza | BD3491FS | |
| Descripción | Sound Processor | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
Analog Sound Processor series
Sound Processor with Built-in
Surround Sound Function
BD3491FS
General Description
Built in stereo 6 input selectors and volume that there is
not an impedance change of a volume terminal. And this
is sound processor can realize 2-band equalizer
(Bass/Treble, Gain±14dB / 2dB_step) and BassBoost,
Output gain, Surround by external components.
Features
Equipped with 6 single ended stereo input
selectors
Built-in input gain controller suitable for mobile audio.
Volume input terminal can be used as a microphone
input terminal since its impedance remains constant
even if volume setting is changed.
Bi-CMOS process is suitable for the design of low
current and low energy. It also provides more quality
for Bi-CMOS small scale regulator and heat in a set.
The package of this IC is SSOP-A32. Sound input
terminals and output terminals arrangement is
optimized for easy and fast layout of PCB pattern. At
the same time, it minimizes PCB area.
Applications
Suitable for mini-components or micro components.
Used for audio equipment of TV, DVD, etc.
Typical Application Circuit
Key Specification
Current upon no signal:
Total Harmonic Distortion:
Maximum Input Voltage:
Crosstalk between Selectors:
Volume Control Range:
Output Noise Voltage:
Residual Output Noise Voltage:
Operating Temperature Range:
7mA(typ)
0.002%(typ)
2.4Vrms(typ)
100dB(typ)
0dB to -87dB
5µVrms(typ)
5µVrms(typ)
-40℃ to +85℃
Package
SSOP-A32
W(typ) x D(typ) x H(max)
13.60mm x 7.80mm x 2.01mm
SSOP-A32
Figure 1. Application Circuit Diagram
○Product structure：Silicon monolithic integrated circuit ○This product is not designed for protection against radioactive rays
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
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BD3491FS
Typical Performance Curves
8
7
6
Operating range
5
4
3
2
1
0
0 2 4 6 8 10
VCC [V]
Figure 4. Vcc vs. Iq
Datasheet
5
4
3
2
1
0
-1
-2
-3
-4
-5
10
100
1000
10000
Frequency [Hz]
100000
Figure 5. Gain vs. Frequency
10.000
10.000
1.000
0.100
10kHz
1 kHz
100Hz
1.000
0.100
0.010
0.010
0.001
0.001
0.010
0.100
Vin [Vrms]
1.000
0.001
10.000
Figure 6. THD+N,Vo vs. Vin
22
20
18
16
14
12
10
8
6
4
2
0
-2
10
100
1000
10000
Frequency [Hz]
100000
Figure 7. Input Gain vs. Frequency.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
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BD3491FS
Datasheet
Select Address 21, 22 (hex)
Attenuation
MSB
Volume Attenuation
LSB
D7 D6 D5 D4 D3 D2 D1 D0
0dB
000000
0
-1dB
000000
1
-2dB
000001
0
-3dB
000001
1
-4dB
000010
0
-5dB
000010
1
-6dB
000011
0
-7dB
000011
1
-8dB
000100
0
-9dB
000100
1
-10dB
000101
0
-11dB
000101
1
-12dB
000110
0
-13dB
000110
1
-14dB
000111
0
-15dB
000111
1
-16dB
-17dB
1 001000 0
001000
1
-18dB
001001
0
-19dB
001001
1
-20dB
001010
0
-21dB
001010
1
-22dB
001011
0
・
・
・
-83dB
・・・・・・
・・・・・・
・・・・・・
101001
・
・
・
1
-84dB
101010
0
-85dB
101010
1
-86dB
101011
0
-87dB
101011
1
101100
0
Prohibition
・・・・・・
・・・・・・
111111
・
・
0
-∞dB
111111
1
: Initial condition
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
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11 Page | ||
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| PDF Descargar | [ Datasheet BD3491FS.PDF ] | |
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