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參數(shù)資料
| 型號： | LA4820M |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.12 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| 封裝： | MFP-24 |
| 文件頁數(shù)： | 1/21頁 |
| 文件大小： | 637K |
| 代理商： | 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.
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 F or
less) allowing support for chip components.
Functions
c Monaural BTL power amplifier
c Headphone OCL power amplifier (16
) × 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
Package Dimensions
unit : mm
3112-MFP24S
[LA4820M]
112
24
13
12.6
0.8
1.0
0.15
0.35
5.4
6.35
7.6
0.625
1.8max
1.5
0.1
SANYO : MFP24S
Sanyo recommended board
Independent IC
Allowable
power
dissipation,
Pd
max
—
m
W
Ambient temperature, Ta – °C
Ordering number: EN5205A
Monolithic Linear IC
LA4820M
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
22896HA(II) No.5205-1/21
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