Datasheet > AN5285K

AN5285K

更新时间： 2022-11-29 07:28:36

品牌	Logo	应用领域
松下 - PANASONIC		/
页数	文件大小	规格书
5页	59K
描述
Sound level automatic gain control IC

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AN5285K 数据手册

ICs for TV

AN5285K

Sound level automatic gain control IC

■ Overview

Unit: mm

The AN5285K is a stereo automatic volume control

IC for reducing a difference in volume between broad-

casting stations and between programs. It is a kind of

AGC circuit and reduces a sudden change in sound sig-

nal amplitude by using a proper time constant.

■ Features

• Sound level AGC function by VCA gain control

• Prevention of S/N ratio degradation by reducing VCA

gain at no signal (typ. 20 mV[rms] or less)

• AGC function can be switched on and off externally.

• Operating point of VCA gain lowering is adjustable by

means of external resistor.

6.0±0.3

(12.0)

3.5±0.25

• Usable for stereo sound system (also usable for monau-

ral sound system) by two VCAs

SSIP010-P-0000

■ Applications

• Televisions and video sets

■ Block Diagram

LOUT

LIN

VCA

Level

sensor 1

50 kΩ

CTL

RIN

CTL

Level

sensor 1

VCA

ROUT

50 kΩ

Level

sensor 2

V/l reg.

12 3 4 5

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