LM4782 datasheet(9/26 Pages) NSC

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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

THD+N vs Frequency

±19V, P

OUT = 1W & 15W/Channel

L =4

Ω, 80kHz BW

THD+N vs Frequency

±22V, P

OUT = 1W & 15W/Channel

L =6

Ω, 80kHz BW

200811G0

200811G1

THD+N vs Frequency

±25V, P

OUT = 1W & 15W/Channel

L =8

Ω, 80kHz BW

THD+N vs Output Power/Channel

±19V, R

L =4

Ω, 80kHz BW

200811G2

200811H7

LM4782 Datasheet(PDF) 9 Page - National Semiconductor (TI)