lm4651 National Semiconductor Corporation, lm4651 Datasheet - Page 7

• Manufacturer Part Number: lm4651
• Description: Overture? Audio Power Amplifier 170w Class D Audio Power Amplifier Solution
• Manufacturer: National Semiconductor Corporation

External Components Description
Typical Performance Characteristics
Output Power vs. Supply Voltage
THD+N vs. Output Power
R
L
= 4
20.
21.
22.
23.
Components
C
SBY1
R
C
OFFSET
R
C
SBY3
, C
gate
IN
SBY2
,
Supply de-coupling capacitors. See Supply Bypassing in the Application Information
section.
Provides a small DC voltage at the input to minimize the output DC offset seen by the
load. This also minimize power on pops and clicks.
Blocks DC voltages from being coupled into the input and blocks the DC voltage created
by R
Slows the rise and fall time of the gate drive voltages that drive the output FET’s.
OFFSET
from the source.
DS101277-4
DS101277-6
(Refer to Figure 1) (Continued)
Output Power vs. Supply Voltage
THD+N vs. Output Power
R
7
L
= 8
Functional Description
DS101277-5
DS101277-7
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