LM4881M National Semiconductor, LM4881M Datasheet - Page 5

• Manufacturer Part Number: LM4881M
• Description: IC,Audio Amplifier,DUAL,BIPOLAR,SOP,8PIN,PLASTIC
• Manufacturer: National Semiconductor

Specifications of LM4881M

• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 0.3x2@8OhmW
• Audio Amplifier Function: Headphone
• Input Offset Voltage: 50@5VmV
• Total Harmonic Distortion: 0.025%%
• Single Supply Voltage (typ): 3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 50dB
• Single Supply Voltage (min): 2.7V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SOIC N
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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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