Datasheet > LA4820M

LA4820M

更新时间： 2024-10-28 22:47:19

品牌	Logo	应用领域
三洋 - SANYO		放大器功率放大器
页数	文件大小	规格书
20页	588K
描述
Monaural Speaker/Stereo Headphone Power Amplifier

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数据手册

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LA4820M 数据手册

Ordering number: EN5205A

Monolithic Linear IC

LA4820M

Monaural Speaker/Stereo Headphone

Power Amplifier

Overview

Package Dimensions

unit : mm

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.

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).

SANYO : MFP24S

Sanyo recommended board

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.

Independent IC

Functions

c Monaural BTL power amplifier

c Headphone OCL power amplifier (16 Ω) × 2

c Output control functions:

Headphone power PVSS

Ambient temperature, Ta −

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 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

12 3 4 5 6 7...20

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