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PDF LA4820M Data sheet ( Hoja de datos )
| Número de pieza | LA4820M | |
| Descripción | Monaural Speaker/Stereo Headphone Power Amplifier | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LA4820M (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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Ordering number: EN5205A
Monolithic Linear IC
LA4820M
Monaural Speaker/Stereo Headphone
Power Amplifier
Overview
The LA4820M compound power IC is designed for portable
information processing equipment, such as electronic book
players and personal notebook computers, and provides on chip
headphone stereo amplifier and monaural speaker amplifier
functions required of such devices. This system IC also
provides on chip a power-saving headphone jack plug-in/out
detection function, which automatically switches the amplifiers,
and an optimum volume level controller.
Package Dimensions
unit : mm
3112-MFP24S
[LA4820M]
Features
c Power-saving headphone jack plug-in/out detection function
on chip that electronically switches between the stereo
headphone amplifier and the monaural BTL amplifier
according to jack plug-in/out.
c The monaural amplifier has, as output control functions, a
built-in output limiter that permits adjustment in accordance
with the speaker impedance and a non-clipping circuit that
outputs a sine wave suited to the output D range, while the
headphone amplifier has a built-in user-friendly PVSS (Peak
Volume Select System).
c On-chip ripple filter with a high ripple rejection ratio in
order to reduce power line noise.
c Less external components needed thanks to system and
circuit technology, and low-capacitance design (22 µF or
less) allowing support for chip components.
Functions
c Monaural BTL power amplifier
c Headphone OCL power amplifier (16 Ω) × 2
c Output control functions:
Headphone power PVSS
Monaural power Non-clipping circuit and output
limiter
c Headphone jack plug-in/out detection function
(monaural amplifier/headphone amplifier switching)
c Ripple filter
c Power mute switch
c Common amplifier on/off switching
SANYO : MFP24S
Sanyo recommended board
Independent IC
Ambient temperature, Ta − °C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
22896HA(II) No.5205-1/20
1 page  
Sample Application Circuit 1
LA4820M
*1 A Tantalum capacitor is recommended.
*2 A polyester film or ceramic capacitor (of which capacitance specified must be independent of temperature changes) is
recommended.
No.5205-5/20
5 Page 
Sanyo Evaluation Board Pattern
LA4820M
Surface
(silk side)
Tone block
(copper foiled side)
Unit (resistance: Ω, capacitance: F)
Copper foiled side
No.5205-11/20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LA4820M.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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