BA7755

更新时间： 2024-11-30 22:39:23

品牌	Logo	应用领域
罗姆 - ROHM		开关
页数	文件大小	规格书
4页	62K
描述
High-voltage audio head selection switch

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BA7755 数据手册

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^DCor

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

•

BA7755A

SW GND CTRL2 CTRL1

VCC

CTRL1

BA7755AF

N.C. N.C. N.C.

VCC HEAD GND CTRL2

SWITCH

12 3 4

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型号	品牌	获取价格	描述	数据表
BA7755A	ROHM	获取价格	High-voltage audio head selection switch
BA7755A/AF	ROHM	获取价格	Video LSIs
BA7755AF	ROHM	获取价格	High-voltage audio head selection switch
BA7755AFE1	ROHM	获取价格	AUDIO/VIDEO SWITCH, PDSO8, SOP-8
BA7755AF-E1	ROHM	获取价格	Audio/Video Switch, 1 Func, 1 Channel, PDSO8, SOP-8
BA7755AFE2	ROHM	获取价格	1-CHANNEL, AUDIO/VIDEO SWITCH, PDSO8, SOP-8
BA7755AFT1	ROHM	获取价格	AUDIO/VIDEO SWITCH, PDSO8, SOP-8
BA7755AF-T1	ROHM	获取价格	Audio/Video Switch, 1 Func, 1 Channel, PDSO8, SOP-8
BA7755AFT2	ROHM	获取价格	Audio/Video Switch, 1 Func, PDSO8, SOP-8
BA7757	ROHM	获取价格	Switchless REC / PB amplifier for standard audio signal processing