|
|
PDF BA3884S Data sheet ( Hoja de datos )
| Número de pieza | BA3884S | |
| Descripción | High-definition sound processor | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de BA3884S (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
|
No Preview Available !
Audio ICs
High-definition sound processor
BA3884F / BA3884S
The BA3884F and BA3884S are sound processor ICs that perform phase and harmonic compensation on audio signals
to accurately reproduce the “rise” section of audio signals that determines the characteristics of the sound, and thus
reproduce the original recording as naturally as possible.
FApplications
Component stereo systems, radio cassette players, car
stereo systems, televisions, VCRs, multimedia PCs,
computer game machines and karaoke machines.
FFeatures
1) Corrects distortion in the rising section of audio sig-
nals that results from miss-matched speakers and
amplifiers, and reproduces the original sound faith-
fully.
2) To allow application with all types of speakers and
sources, the clarity can be adjusted using DC control.
3) DC control provided for selection of either processor
mode or bypass mode.
4) Bass boost can be adjusted with the DC control in or-
der to maintain a good balance with the dynamically
changing upper frequencies.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions
428
1 page  
Audio ICs
BA3884F / BA3884S
Amplitude compensation (harmonic compensation)
To maintain appropriate auditory balance for the treble
region that is made up of harmonic components, a high-
speed detector and high-performance VCA circuit are
used for amplitude control of the treble component. The
amount of compensation is determined from a calcula-
tion performed based on the DC level input to the CTL1
pin, and the DC level detected from the input signal. The
internal control signal obtained from this calculation com-
pensates the amplitude of the treble component input to
the VCA. This amplitude compensation recovers the har-
monic component, and improves the reproduction clarity
(definition level) of instruments and vocals.
Bass boost
To maintain good balance with the dynamically changing
treble component it is possible to boost the bass compo-
nent. The amount of bass boost is determined by the DC
level applied to CTL2.
Mode switch
The DC voltage on the CTL pin can be used to switch the
IC between processing mode and bypass mode. When
processing mode is selected, the audio signal is en-
hanced using the compensation circuits described above
before being output. When bypass mode is selected, the
signal bypasses all of the compensation circuits, and
only passes through a buffer amplifier before output.
External components
The frequency characteristic in processing mode with
maximum definition level and maximum bass boost is
given below.
C1 : External capacitor connected
between the VCA and MIX pins
(0.068µF in the application
circuit).
C2 : External capacitor connected
between the OUT and MIX pins
(470pF in the application
circuit).
As indicated in the diagram, capacitors C1 and C2 deter-
mine the treble component cutoff frequency. By varying
the values of these components, the frequency charac-
teristic can be changed as indicated by the dotted line in
the diagram. This varies the balance of the harmonic
component, and is an important factor in determining the
tone quality.
432
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet BA3884S.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| BA3884 | High-definition sound processor | ROHM Semiconductor |
| BA3884F | High-definition sound processor | ROHM Semiconductor |
| BA3884S | High-definition sound processor | ROHM Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |