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參數資料
| 型號： | BA7755 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | High-voltage audio head selection switch |
| 中文描述： | 高電壓選擇開關音頻磁頭 |
| 文件頁數： | 1/4頁 |
| 文件大小： | 59K |
| 代理商： | BA7755 |
1
Video ICs
High-voltage audio head selection
switch
BA7755A / BA7755AF
The standard audio circuits of video cassette recorders and the recording circuits of tape decks use AC bias record-
ing to record the audio signal onto the tape. This bias voltage is some tens of volts, and a high-capacity bias-side
switch is required to electronically switch the head when in playback or record mode.
The BA7755A and BA7755AF are high-voltage switching ICs designed to switch voltages as high as ± 65V
DC
or
AC120V
P-P
(f = 70Hz).
Two control systems, one for current control, and one for voltage control are provided, so the ICs can be used in cir-
cuits that employ either method.
By combining the BA7755A or BA7755AF with the BA7751ALS recording / playback amplifier, it is possible to con-
struct a compact recording / playback audio circuit. In addition, the BA7755A and BA7755AF are an excellent choice
for a wide variety of other high-voltage switching applications.
Applications
Video cassette recorders and tape decks
Features
1) High withstanding voltage ( ± 65V
DC
(Min.),
AC120V
P-P
(Min.), f = 70Hz).
2) Circuits for either current control or voltage control
are provided on the chip.
3) Compact SIP 5pin or SOP 8pin package.
Block diagram
BA7755AF
1
2
3
4
5
SW
GND CTRL2 CTRL1
BA7755A
V
CC
8
7
6
5
1
2
3
4
N.C.
N.C.
N.C.
HEAD
SWITCH
GND CTRL2
CTRL1
V
CC
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相關代理商/技術參數 |
參數描述 |
|---|---|
| BA7755A | 制造商:Panasonic Industrial Company 功能描述:IC |
| BA7755A/AF | 制造商:ROHM 制造商全稱:Rohm 功能描述:Video LSIs |
| BA7755AF | 制造商:ROHM 制造商全稱:Rohm 功能描述:High-voltage audio head selection switch |
| BA7757 | 制造商:ROHM 制造商全稱:Rohm 功能描述:Switchless REC / PB amplifier for standard audio signal processing |
| BA7757BK | 制造商:ROHM 制造商全稱:Rohm 功能描述:Switchless REC / PB amplifier for standard audio signal processing |
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