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LM4883 데이터시트(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 LM4883
상세설명  Dual 2.1W Audio Amplifier Plus Stereo Headphone
PDF  23 Pages
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제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4883 데이터시트(HTML) 2 Page - National Semiconductor (TI)

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Typical Application
External Components Description
(Refer to Figure 1)
Components
Functional Description
1.
R1, 4, 5, 6
The inverting input resistance R1, along with R
3, set the closed-loop gain. R1, along with C1,
form a high pass filter with f
c = 1/(2
πR
1C1).
2.
C1, 2, 3, 4
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. C
1, along with
R
1, create a highpass filter with fc = 1/(2
πR
1C1). Refer to the section, SELECTING PROPER
EXTERNAL COMPONENTS, for an explanation of determining the value of C
1.
3.
R2, 3, 7, 8
The feedback resistance, along with R
1 sets the closed-loop gain.
4.
C6
The supply bypass capacitor. Refer to the POWER SUPPLY BYPASSING section for
information about properly placing, and selecting the value of, this capacitor.
5.
C5
The capacitor, C
5, filters the half-supply voltage present on the BYPASS pin. Refer to the
SELECTING PROPER EXTERNAL COMPONENTS section for information concerning proper
placement and selecting C
5’s value.
200887A1
FIGURE 1. Typical Audio Amplifier Application Circuit
www.national.com
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