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參數(shù)資料
| 型號： | LA4820M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Monaural Speaker/Stereo Headphone Power Amplifier |
| 中文描述： | 單聲道喇叭/立體聲耳機功率放大器 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 677K |
| 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 μF 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
Monaural power
PVSS
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]
SANYO : MFP24S
Sanyo recommended board
Independent IC
A
Ambient temperature, Ta °C
Ordering number: EN5205A
Monolithic Linear IC
LA4820M
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
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