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參數(shù)資料
| 型號(hào)： | BA7181 |
| 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(dòng)跟蹤接口 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 95K |
| 代理商： | BA7181 |
1
Video ICs
2-channel PRE / REC amplifier with
auto-tracking interface
BA7181FS
The BA7181FS is a PRE / REC amplifier developed for use in video cassette recorders. It has been designed for use
in two-head decks and features 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 chan-
nel and REC / PB switches on a single monolithic IC.
Applications
VCRs
Features
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 IC has two circuits for two-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 is provided for automated
tracking adjustment. The detector characteristic is
linear, and the sensitivity can be adjusted using
external components.
Absolute maximum ratings (Ta = 25°C)
Parameter
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 two-head VCR
use.
5) Built-in recording level AGC means adjustment of
FM recording current is not necessary.
6) Head switches for two-channel PRE / REC system
provided.
7) Operates off a single 5V power supply, with low
power dissipation.
Symbol
Limits
Unit
Applied voltage
Power dissipation
Operating temperature
Storage temperature
When mounted on a 90mm
×
50mm, t = 1.6mm glass epoxy board.
Reduced by 7.5mW for each increase in Ta of 1
°
C over 25
°
C.
Recommended operating (Ta = 25°C)
Parameter
V
CC
7.0
937.5
V
Pd
mW
Topr
°
C
Tstg
°
C
– 20 ~ + 65
– 55 ~ + 150
Symbol
Min.
Typ.
Max.
Unit
Conditions
Playback / recording (voltage range)
V
CC
4.5
5.0
5.5
V
11pin
s
Not designed for radiation resistance.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| BA7182 | 2-channel PRE / REC amplifier with auto-tracking interface |
| BA7184 | 4-channel PRE / REC amplifier with auto-tracking interface |
| BA7207 | SECAM chroma signal processor for VHS VCRs |
| BA7232 | Color TV Signal Encoder |
| BA7242 | Color TV signal encoder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BA7181FS | 制造商:ROHM 制造商全稱(chēng):Rohm 功能描述:2-channel PRE / REC amplifier with auto-tracking interface |
| BA7182 | 制造商:ROHM 制造商全稱(chēng):Rohm 功能描述:2-channel PRE / REC amplifier with auto-tracking interface |
| BA7182AS | 制造商:ROHM 制造商全稱(chēng):Rohm 功能描述:2-channel PRE / REC amplifier with auto-tracking interface |
| BA7184 | 制造商:ROHM 制造商全稱(chēng):Rohm 功能描述:4-channel PRE / REC amplifier with auto-tracking interface |
| BA7184S | 制造商:ROHM 制造商全稱(chēng):Rohm 功能描述:4-channel PRE / REC amplifier with auto-tracking interface |
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