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LM4865 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM4865
Description  750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4865 Datasheet(HTML) 3 Page - National Semiconductor (TI)

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External Components Description
(
Figure 1 )
Components
Functional Description
1.
C
i
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. It also creates a
highpass filter with the internal R
i. The designer should note that10kOhm<(Ri)<110kOhm.Therefore fc =
1/(2
πR
iCi). Refer to the section, Proper Selection of External Components, for an explanation of how to
determine the value of C
i.
2.
C
S
Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing
section for information concerning proper placement and selection of the supply bypass capacitor.
3.
C
B
Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of
External Components, for information concerning proper placement and selection of C
B.
Typical Performance Characteristics
THD+N vs Frequency
DS101025-5
THD+N vs Frequency
DS101025-6
THD+N vs Output Power
DS101025-7
THD+N vs Output Power
DS101025-8
THD+N vs Output Power
DS101025-9
THD+N vs Output Power
DS101025-10
THD+N vs Output Power
DS101025-11
Power Dissipation vs Load
Resistance
DS101025-12
Power Dissipation vs Output Power
DS101025-13
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