BA7184

更新时间： 2024-11-18 22:27:19

品牌	Logo	应用领域
罗姆 - ROHM		放大器
页数	文件大小	规格书
8页	122K
描述
4-channel PRE / REC amplifier with auto-tracking interface

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BA7184 数据手册

Video ICs

4-channel PRE / REC amplifier with

auto-tracking interface

BA7184S

The BA7184S is a PRE / REC amplifier developed for use in video cassette recorders. It is compatible with four-head

decks and features built-in FB damping, four preamplifiers, a chroma output amplifier, an FM output amplifier (with

AGC), an envelope detector and envelope comparator, a constant-current BTL-drive REC amplifier (with AGC) and

channel switching, EP / SP switching, and mode switching integrated onto a single monolithic IC.

Applications

•

VCRs

Features

•

1) The playback amplifier has a total gain of 56dB

(Typ.), and has a low-noise preamplifier. Designed

for VHS band operation with low external parts

count. The IC has 4 circuits for 4-head VCR applica-

tions.

4) The recording amplifier uses constant-current BLT

drive that handles load variations (i.e. headimped-

ance) well, and gives stable recording characteris-

tics. 2 circuits are provided for 4-head VCR use.

5) Built-in recording level AGC means adjustment of

FM recording current is not necessary.

2) Two playback output systems (through output and

AGC output). The AGC output level is 315mV^P-P

(Typ.); suitable for FM brightness signal output.

3) Auto-tracking interface for automated tracking

adjustment. Linear detector characteristic with sen-

sitivity that can be set using external components.

6) Head switches for 4-channel PRE / REC system

provided.

7) Operates off a single 5V power supply, with low

power dissipation.

Absolute maximum ratings (Ta = 25°C)

•

Parameter

Symbol

V^CC

Limits

7.0

Unit

Applied voltage

Power dissipation

1050

°C

Operating temperature

Storage temperature

Topr

Tstg

– 20 ~ + 65

– 55 ~ + 125

°C

1 Reduced by 10.5mW for each increase in Ta of 1°C over 25°C (free air).

Recommended operating conditions (Ta = 25°C)

•

Symbol

V^CC

Min.

4.5

Typ.

5.0

Max.

5.5

Unit

Conditions

13pin

Parameter

Playback / recording

᭺ Not designed for radiation resistance.

12 3 4 5 6 7 8

中文翻译

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