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參數(shù)資料
| 型號(hào)： | LM4610N |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Dual DC Operated Tone/Volume/Balance Circuit with National 3-D Sound |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP24 |
| 封裝： | DIP-24 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大小： | 393K |
| 代理商： | LM4610N |
Applications Information
(Continued)
DC CONTROL OF NATIONAL 3D-SOUND AND
LOUDNESS CONTROL
Figure Figure 16shows a possible circuit if electronic control
of these functions is required. The typical DC level at pins 3
and 22 is 7.5V (V
=12), with the input signal superim-
posed, and this can be used to gias a FET switch as shown
to save components. For switching with a 0V - 5V signal a
low-threshold FET is required when using a 12V supply.
With larger switching levels this is less critical.
The high impedance PNP base input of the loudness control
pin 9 is readily switched with a general purpose NPN
transistor.
DS101125-37
FIGURE 16. Application Circuit with Electronic Switching
www.national.com
9
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