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LM4734 Datasheet(PDF) 9 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM4734
Description  3 Channel 20W Audio Power Amplifier with Mute and Standby
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4734 Datasheet(HTML) 9 Page - National Semiconductor (TI)

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Optional External Component
Interaction
Although the optional external components have specific
desired functions that are designed to reduce the bandwidth
and eliminate unwanted high frequency oscillations they may
cause certain undesirable effects when they interact. Inter-
action may occur for components whose reactances are in
close proximity to one another. One example would be the
coupling capacitor, C
C, and the compensation capacitor, Cf.
These two components act as low impedances to certain
frequencies which will couple signals from the input to the
output. Please take careful note of basic amplifier compo-
nent functionality when designing in these components.
The optional external components shown in Figure 4 and
Figure 5 and described above are applicable in both single
and split voltage supply configurations.
Typical Performance Characteristics
Supply Current
vs Supply Voltage
PSRR vs Frequency
±21V, V
RIPPLE =1VRMS
R
L =8
Ω, 80kHz BW
200898J8
200898J7
THD+N vs Frequency
±17V, P
OUT = 1W/Channel
R
L =4
Ω, 80kHz BW
THD+N vs Frequency
±21V, P
OUT = 1W/Channel
R
L =8
Ω, 80kHz BW
200898K2
200898K3
www.national.com
9


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