|
|
PDF BA3880S Data sheet ( Hoja de datos )
| Número de pieza | BA3880S | |
| Descripción | High-definition sound processor | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de BA3880S (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
|
No Preview Available !
Audio ICs
High-definition sound processor
BA3880S
The BA3880S is a sound processor IC that performs 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, and active speakers.
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 fixed internally to 4dB.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions
419
1 page  
Audio ICs
FCircuit operation
The BA3880S high-definition sound processor system
IC treats the amplifier and speakers as a total audio sys-
tem, and performs signal processing at the amplifier in-
put stage to accurately reproduce the rise sections of au-
dio signals that determine the characteristics of sound,
and ensure that the replayed audio is as close to the origi-
nal sound and as natural sounding as possible.
Problems relating to playback of sound on audio sys-
tems.
With naturally-generated sound, high-frequency har-
monic components generally occur first, followed by the
fundamental frequency components. This also applies to
the attack section of the sound that characterizes many
musical instruments. It is the amplitude component that
gives form to the frequency component and envelope at
the rising point of sound, and this expresses the charac-
teristics of the sound. Therefore, when replaying audio
on audio playback systems, it is extremely important that
BA3880S
the rise section of the signal be expressed accurately
with respect to the original sound.
However, there is inevitable mismatching between the
speakers and amplifiers in current audio systems. Solid-
state power amplifiers use negative feedback techniques
and operate off a fixed voltage supply, but as speakers
are a current element, mismatching in the system inevit-
ably occurs. In addition, the speaker impedance charac-
teristics are strongly influenced by the electrical reac-
tance of the voice coil, and the mechanical reactance of
the cone assembly. As a result of this, distortion is gener-
ated in the rising sections of audio signals, causing
phase shift in the reproduced sound. In addition, imped-
ance increases in the treble region which reduces the
speaker amplitude and reduces the harmonic compo-
nent, and as a result there is a tendency to masking of
large mid-frequency signal components that follow, and
this makes it difficult to reproduce the rising sections of
the sound.
FOperating principle
To solve the problems described above, the BA3880S
performs the audio signal processing described below.
Phase shift compensation
423
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet BA3880S.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| BA3880AFS | High-definition sound processor | ROHM Semiconductor |
| BA3880AS | High-definition sound processor | ROHM Semiconductor |
| BA3880S | 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 |