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參數(shù)資料
| 型號(hào)： | EB-120 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | 20W Class D Single Channel Audio Amplifier |
| 中文描述： | 20瓦D類(lèi)單聲道音頻放大器 |
| 文件頁(yè)數(shù)： | 6/13頁(yè) |
| 文件大?。?/td> | 392K |
| 代理商： | EB-120 |
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ATA-120
This is preliminary information on a new product. Specifications are subject to change without notice.
129 Morgan Drive, Norwood, MA 02062
voice: (781) 551-9450
CONTROLLED DOCUMENT: P_903-000009_Rev14 ATA-120 Data Sheet.doc
fax: (781) 440-9528
email: apogee@apogeeddx.com
DRN: PRELIMINARY Page 6 of 13
5.0 Application Information
The ATA-120 uses a minimum number of external components to complete a Class-D audio amplifier. The
application circuit of Figure 3 matches the component identifiers used in this section. It is optimized for both a
24V power supply and a 1.5V RMS maximum input signal and should be suitable for most applications. If this
circuit does not correspond to the requirements of the required application, the following sections show how to
customize the amplifier circuitry.
Figure 3 - Typical 20W Audio Amplifier Circuit
5.1 Setting the Voltage Gain
The amplifier voltage gain is set by the combination of R1 and R3. The voltage gain sets the output voltage
power for a given input signal voltage and is set by the following equation:
R
A
V
=
3
1
R
Equation 1
The maximum output voltage is limited by the power supply. To achieve the maximum power out of the ATA-120
amplifier, set the gain such that the maximum AC input signal results in the maximum output voltage swing.
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