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LM4866 データシート(PDF) 9 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
部品番号 LM4866
部品情報  2.2W Stereo Audio Amplifier
PDF  21 Pages
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4866 データシート(HTML) 9 Page - National Semiconductor (TI)

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Typical Performance Characteristics (Continued)
Channel Separation
Power Supply
Rejection Ratio
20018619
20018621
Open Loop
Frequency Response
Supply Current vs
Supply Voltage
20018622
20018623
External Components Description
(Refer to Figure 1.)
Components
Functional Description
1.
R
i
The Inverting input resistance, along with R
f, set the closed-loop gain. Ri, along with Ci, form a high pass
filter with f
c = 1/(2
πR
iCi).
2.
C
i
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. C
i, along with Ri, create a
highpass filter with f
c = 1/(2
πR
iCi). Refer to the section, SELECTING PROPER EXTERNAL
COMPONENTS, for an explanation of determining the value of C
i.
3.
R
f
The feedback resistance, along with R
i, set the closed-loop gain.
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
The capacitor, C
B, 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
B’s value.
www.national.com
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