NJM2775A

更新时间： 2024-09-16 22:51:47

品牌	Logo	应用领域
NJRC		放大器功率放大器便携式
页数	文件大小	规格书
3页	28K
描述
PRE&HI-POWER AMPLIFIER with ALC for PORTABLE TAPE RECORDER

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中文翻译

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NJM2775A 数据手册

NJM2775A

PRELIMINARY

PRE&HI-POWER AMPLIFIER with ALC for PORTABLE TAPE RECORDER

■ GENERAL DESCRIPTION

The NJM2775A is a pre&power amplifier with ALC

■ PACKAGE OUTLINE

designed for micro and compact cassette recorders.

It contains pre-amplifier, ALC circuit, power amplifiers,

and ripple filter. The pre-amplifier amplifies the signal

come from magnetic head. The ALC circuit limits the

input signal to optimize level in recording. The power

amplifiers drive a speaker in play back and the magnetic

head in recording. The ripple filter stabilizing the supply

voltage to the internal pre-amplifier and an external

condenser microphone.

NJM2775AM

The NJM2775A improves high output power compared

with the NJM2128.

It is suitable for portable tape recorder, and other

portable playing back and recording recorder items.

■ FEATURES

■Operating Voltage

V⁺=1.8 to 6.0V

9mA typ.

■Operating Current

■Output Power

350mW typ. at V⁺=3V,R_L=4Ω,THD=10%

■Automatic Level Control

(ALC) Limit Level

200mVrms typ., at f=1kHz

■Ripple Filter R.R.

(Ripple Rejection)

■Bipolar Technology

■Package Outline

47dB typ., at f=200Hz,C=47µF

DMP16

■ PIN CONFIGURATION

PRE+IN

PIN FUNCTION

1.PRE +IN

2.SGND

3.POW +1NA

4.POW -INA

5.POW -INB

6.POW +INB

7.REFOUT

8.REFIN

_PRE-IN16

PRE

AMP

SGND

_PREOUT15

POW+INA

POWOUTA

POWER

AMPA

POW-INA

V⁺

9.ALCIN

10.TC

POW-INB

POW+INB

RFOUT

RFIN

PGND

POWER

AMPB

11.POW OUTB

12.PGND

_POWOUTB11

13. V⁺

14.POW OUTA

15.PREOUT

16.PRE -IN

RIPPLE

FILTER

ALC

ALCIN

- 1 -

12 3

中文翻译

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