Datasheet > AN7354

AN7354

更新时间： 2024-11-28 22:39:11

品牌	Logo	应用领域
松下 - PANASONIC		/
页数	文件大小	规格书
12页	124K
描述
Dolby B/C-type Noise Reduction

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AN7354 数据手册

ICs for Cassette, Cassette Deck

AN7354SC

Dolby* B/C-type Noise Reduction

■ Overview

Unit : mm

The AN7354SC is an IC for 2 ch. Dolby B/C-Type noise

reduction process. It requires fewer external parts and

incorporates the functions of line-output muting and level

detection and the delay circuit.

■ Features

•

Built-in spectral skewing circuit not requiring external

parts

•

Line-output muting circuit built-in

PB input delay circuit built-in

Built-in level detection circuit for automatic level adjust-

ment and level meter

•

ON/OFF of NR, B-/C-type, REC./PB, MPX and muting

function, and Hi/Lo changeover of level detection gain,

directly-controllable by microcomputer

0.3

9.5±0.3

11.5±0.3

Dolby symbols are the trademarks of Dolby Laboratory

Licensing Corporation. The use of this products

requires the approval of Dolby Laboratories Licensing

Corporation in advance.

42-Lead SSOP Package (SSOP042-P-0450)

■ Block Diagram

MPX METER

OFF/ 0dB

LEVEL

5.6kΩ

REC.

/PB

METER

OUT

LINE

OUT

0.1µF

V_CC

ON /20dB

REC. OUT

1500pF

1µF

2.2µF

MPX

2.4kΩ

100kΩ

1µF

Mute

Delay

Rect

HLS

LLS

LOGIC

Bias

LLS

Rect

Delay

Mute

2.4kΩ

1µF

0.1µF

22kΩ

100kΩ

1µF

MPX

5.6kΩ

1500pF

REC.

V_EE

ON/

OFF

REC. OUT

LINE

OUT

C/B

-type

Mute

ON/OFF

LEVEL

METER

OUT

2.2µF

12 3 4 5 6 7...12

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