|
|
PDF LA4802T Data sheet ( Hoja de datos )
| Número de pieza | LA4802T | |
| Descripción | Headphone Stereo Power Amplifier | |
| Fabricantes | Sanyo | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LA4802T (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
|
No Preview Available !
Ordering number : ENN6657
Monolithic Linear IC
LA4802T
Headphone Stereo Power Amplifier
Overview
The LA4802T is a headphone stereo power amplifier for
portable CD and MD players. It features a high signal-to-
noise ratio, a high ripple rejection ratio, low distortion,
and low current drain.
Functions
• Headphone stereo power amplifier
• Power switch
• Muting switch
• Beep tone function control input pin (The beep tone
function can be used regardless of whether the mute
function is on or off.)
Features
• High signal-to-noise ratio (100 dB typical at 7.5 µV)
• High ripple rejection ratio (70 dB typical)
• Low current drain (950 µA typical)
• On-chip bass compensation circuit
(Compensates for bass frequency attenuation due to the
output capacitors and achieves flat frequency
characteristics.)
• Ultraminiature package (MSOP-20)
Package Dimensions
unit: mm
3262-MSOP20
[LA4802T]
5.2
20 11
1
(0.35)
0.5
10
0.2
0.125
SANYO: MSOP20
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
Topr
Tstg
Conditions
When mounted, Ta = 80°C
Ratings
4.5
375
–20 to +80
–40 to +150
Unit
V
mW
°C
°C
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
72502RM (OT) No. 6657-1/10
1 page  
LA4802T
External Components (Values in parentheses are recommended values.)
• C1, C2 (1 to 10 µF)
Input coupling capacitors.
• C3 (0.47 to 2.2 µF)
Boost switch on/off impulse noise reduction capacitor.
• C4 (1 µF)
Mute switch on/off impulse noise reduction capacitor.
• C5, C6 (10 to 22 µF)
Reference bias (VREF) decoupling capacitors.
• C7 (0.1 to 1 µF)
Beep input coupling capacitor. Be careful not to attenuate the beep tone signal.
• C8, C9 (2.2 to 4.7 µF)
Ripple filter capacitors.
• C10 (2.2 to 4.7 µF)
Reference bias (VREF) decoupling capacitors.
• C11 (1 to 2.2 µF)
Boost switch on/off impulse noise reduction capacitor.
• C12 (220 µF)
Power supply line decoupling capacitor.
• C13, C16 (0.47 µF)
Low pass filter capacitor in the bass boost circuit. The amount of bass boost depends on the value of this capacitor.
• C14, C17 (0.1 µF)
Output oscillation prevention capacitors. We recommend using Mylar capacitors. Since the oscillation stability
varies depending on the PCB layout and other factors, we recommend a value of at least 0.1 µF for these capacitors.
• C15, C18 (220 to 470 µF)
Output capacitors. Low band attenuation increases with lower capacitances.
• R1 (24 to 51 kΩ)
Smoothing resistor for the boost switch on/off transition. Note that using a smaller value will increase the idling
current when the boost switch is off.
• R2, R3 (10 Ω)
Output oscillation prevention resistors.
No. 6657-5/10
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet LA4802T.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LA4802T | Headphone Stereo Power Amplifier | Sanyo |
| 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 |