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參數資料
| 型號： | BA7180 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | 2-channel PRE / REC amplifier with auto-tracking interface |
| 中文描述： | 2通道前/承包放大器具有自動跟蹤接口 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 148K |
| 代理商： | BA7180 |
1
Video ICs
2-channel PRE / REC amplifier with
auto-tracking interface
BA7180AS / BA7180AFS
The BA7180AS and BA7180AFS are PRE / REC amplifiers developed for use in video cassette recorders. They
have been designed for use in two-head decks and feature built-in FB damping, two preamplifiers, a chroma output
amplifier, an FM output amplifier (with AGC), an envelope detector, a constant-current BTL-drive REC amplifier (with
AGC) and built-in channel and REC / PB switches on a single monolithic IC.
1) The playback amplifier has a total gain of 57dB (Typ.),
and has a low-noise preamplifier. Designed for VHS-
band operation with low external parts count.The ICs
have 2 circuits for 2-head VCR applications.
2) Two playback output systems (through output and
AGC output). The AGC output level is 300mV
P-P
(Typ.); suitable for FM brightness signal output.
3) Auto-tracking interface for automated tracking
adjustment. The detector characteristic is non-linear
to improve tracking accuracy during playback of low
signal levels.
4) The recording amplifier uses constant-current BLT
drive that handles load variations (i.e. head imped-
ance) well, and gives stable recording characteris-
tics. A single circuit is provided for 2-head VCR use.
5) Built-in recording level AGC means adjustment of
FM recording current is not necessary.
6) Head switches for 2-channel PRE / REC system
provided.
7) Operates off a sigle 5V power supply, with low
power dissipation.
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Unit
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
1 Reduced by 10.0mW for each increase in Ta of 1
°
C over 25
°
C (free air).
2 When mounted on a 90mm
×
90mm, t = 1.6mm glass epoxy board, reduced by 7.5mW for each
increase in Ta of 1
°
C over 25
°
C.
V
CC
7.0
1000
1
937.5
2
V
Pd
BA7180AS
mW
BA7180AFS
Topr
– 20 ~ + 65
°
C
Tstg
– 55 ~ + 150
°
C
Features
Applications
VCRs
Recommended operating conditions (Ta = 25°C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Playback / recording
V
CC
4.5
5.0
5.5
V
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相關代理商/技術參數 |
參數描述 |
|---|---|
| BA7180AFS | 制造商:ROHM 制造商全稱:Rohm 功能描述:2-channel PRE / REC amplifier with auto-tracking interface |
| BA7180AS | 制造商:ROHM 制造商全稱:Rohm 功能描述:2-channel PRE / REC amplifier with auto-tracking interface |
| BA7180AS/AFS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Video LSIs |
| BA7181 | 制造商:ROHM 制造商全稱:Rohm 功能描述:2-channel PRE / REC amplifier with auto-tracking interface |
| BA7181FS | 制造商:ROHM 制造商全稱:Rohm 功能描述:2-channel PRE / REC amplifier with auto-tracking interface |
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