lm4881mmx National Semiconductor Corporation, lm4881mmx Datasheet - Page 5

• Manufacturer Part Number: lm4881mmx
• Description: Dual 200 Mw Headphone Amplifier With Shutdown Mode
• Manufacturer: National Semiconductor Corporation

Components
External Components Description
Typical Performance Characteristics
(Figure 1)
1. R
2. C
3. R
4. C
5. C
6. C
i
i
f
S
B
O
THD+N vs Frequency
THD+N vs Frequency
Inverting input resistance which sets the closed-loop gain in conjuction with R
a high pass filter with C
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
highpass filter with R
Components, for and explanation of how to determine the value of C
Feedback resistance which sets closed-loop gain in conjuction with R
Supply bypass capacitor which provides power supply filtering. Refer to the Application Information
section for proper placement and selection of the supply bypass capacitor.
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
Output coupling capacitor which blocks the DC voltage at the amplifier’s output. Forms a high pass
filter with R
L
at f
O
= 1/(2πR
i
at f
i
10000503
10000505
at f
c
= 1 / (2πR
L
c
C
= 1 / (2πR
O
)
i
C
Functional Description
i
). Refer to the section, Proper Selection of External
i
C
5
i
).
THD+N vs Frequency
THD+N vs Frequency
i
i
.
.
f
. This resistor also forms
B
.
10000504
10000506
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