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参数资料
| 型号： | LM4913MH/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.09 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| 封装： | TSSOP-10 |
| 文件页数： | 15/18页 |
| 文件大小： | 1078K |
| 代理商： | LM4913MH/NOPB |
External Components Description
(Figure 1)
Components
Functional Description
1.
R
i
This is the input resistor for the inverting input that, along with the 62.5k
internal feedback resistor R
f, sets the
first stage's closed-loop gain. The overall SE gain is A
V (SE) = 62.5k / Ri, whereas the overall BTL gain is AV (BTL)
= -125k
/ R
i. Input resistance Ri and input capacitance Ci form a high pass filter. The filter's cutoff frequency is
filter's cutoff frequency is f
C = 1 / 2πRiCi.
2.
C
i
This is the input coupling capacitor. It blocks DC voltage at the amplifier's inverting input. C
i and Ri create a highpass
filter. The filter's cutoff frequency is f
C = 1 / 2πRiCi. Refer to the Application Information section, SELECTING
EXTERNAL COMPONENTS, for an explanation of determining C
i's value.
3.
C
This is the output coupling capacitor. Refer to the Application Information section, SELECTING EXTERNAL
COMPONENTS, for an explanation of determining C
C's value.
4.
C
S
The supply bypass capacitor. Refer to the POWER SUPPLY BYPASSING section for information about properly
placing, and selecting the value of this capacitor.
5.
C
B
This capacitor filters the half-supply voltage present on the BYPASS pin. Refer to the Application Information
section, SELECTING EXTERNAL COMPONENTS, for information about properly placing, and selecting the value
of this capacitor.
www.national.com
6
LM4913
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| LM4913MHX/NOPB | 制造商:Texas Instruments 功能描述:Audio Amp Headphone/Speaker 1-CH Mono/2-CH Stereo 2W Class-AB 10-Pin TSSOP EP T/R |
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| LM4914A WAF | 制造商:Texas Instruments 功能描述: |
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