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參數(shù)資料
| 型號(hào)： | BA7780 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | Stereo zoom microphone amplifier for camcorders |
| 中文描述： | 立體聲變焦攝像機(jī)麥克風(fēng)放大器 |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大小： | 144K |
| 代理商： | BA7780 |
1
Video ICs
Stereo zoom microphone amplifier
for camcorders
BA7780KV
The BA7780KV is a microphone amplifier developed for use in camcorders. The IC features an electronic volume cir-
cuit for presetting the curve required for the stereo zoom function, a microphone element power supply regulator, a
wind-noise rejection filter, a current limiting circuit for external accessory power supplies, and an input for external
microphone input. The IC operates off a 3.3V power supply.
Applications
Camcorders
Features
1) Operates off a 3.0V to 5.25V power supply.
2) Zoom microphone processing function on one chip.
3) Built-in electronic volume for external setting of sen-
sitivity and control voltage.
4) Adjustable microphone element sensitivity.
5) Matrix amplifier for stereo emphasis.
6) Automatic switching circuit for external inputs, and
built-in external monaural decision circuit.
Absolute maximum ratings (Ta = 25°C)
Parameter
Recommended operating conditions (Ta = 25°C)
Parameter
Symbol
Limits
Unit
V
CC
7.0
750
V
Pd
mW
Topr
°
C
Tstg
°
C
– 10 ~ + 70
– 55 ~ + 125
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
Reduced by 7.5mW for each increase in Ta of 1
°
C over 25
°
C.
Symbol
Min.
Typ.
Max.
Unit
V
CCS
3.0
—
5.25
V
Power supply voltage
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| BA7781 | Stereo microphone amplifier for camcorders |
| BA7795 | VCR standard audio signal processor |
| BA7797 | VCR standard audio signal processor |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BA7780KV | 制造商:ROHM 制造商全稱:Rohm 功能描述:Stereo zoom microphone amplifier for camcorders |
| BA7781 | 制造商:ROHM 制造商全稱:Rohm 功能描述:Stereo microphone amplifier for camcorders |
| BA7781K | 制造商:ROHM 制造商全稱:Rohm 功能描述:Stereo microphone amplifier for camcorders |
| BA7785 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| BA7785FS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Triple Audio Amplifier |
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