LM4864M National Semiconductor, LM4864M Datasheet - Page 5

• Manufacturer Part Number: LM4864M
• Description: AMP, AUDIO, BOOMER 0.3W, SMD, SOIC8
• Manufacturer: National Semiconductor

Specifications of LM4864M

• Amplifier Class: AB
• No. Of Channels: 1
• Output Power: 725mW
• Supply Voltage Range: 2.7V To 5.5V
• Thd + N: 0.7% @ 300mW, 8ohm, VDD=5V
• Load Impedance: 8ohm
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Amplifier Case Style: SOIC

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5.
External Components Description
Typical Performance Characteristics
Components
R
C
R
C
C
i
i
F
S
B
Inverting input resistance which sets the closed-loop gain in conjunction with R
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
for an explanation of how to determine the value of C
Feedback resistance which sets the closed-loop gain in conjunction with R
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.
Bypass pin capacitor which provides half-supply filtering. Refer to the Proper Selection of External
Components for information concerning proper placement and selection of C
THD+N vs Frequency
THD+N vs Frequency
i
i
at f
at f
c
c
01260703
01260705
= 1/(2π R
= 1/(2π R
i
C
i
C
i
). Refer to the section, Proper Selection of External Components,
I
).
(Figure 1)
Functional Description
5
i
.
THD+N vs Frequency
THD+N vs Frequency
i
.
B
F
.
. This resistor also forms a
01260704
01260706
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