Datasheet

20
100 1k 10k 20k
FREQUENCY (Hz)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
PSRR LEVEL (dB)
20
100 1k 10k 20k
FREQUENCY (Hz)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
PSRR LEVEL (dB)
10m
100m 1
OUTPUT POWER (W)
0.01
0.1
1
10
THD+N (%)
10m
100m 500m
OUTPUT POWER (W)
0.01
0.1
1
10
THD+N (%)
10m
100m 1
OUTPUT POWER (W)
0.01
0.1
1
10
THD+N (%)
10m
100m 1
OUTPUT POWER (W)
0.01
0.1
1
10
THD+N (%)
LM4991
www.ti.com SNAS217A –MAY 2004–REVISED APRIL 2013
Typical Performance Characteristics (continued)
THD+N vs Output Power THD+N vs Output Power
V
DD
= 3V, R
L
= 4Ω, and f = 1kHz V
DD
= 3V, R
L
= 8Ω, and f = 1kHz
Figure 12. Figure 13.
THD+N vs Output Power THD+N vs Output Power
V
DD
= 2.6V, R
L
= 4Ω, and f = 1kHz V
DD
= 2.6V, R
L
= 8Ω, and f = 1kHz
Figure 14. Figure 15.
Power Supply Rejection Ratio (PSRR) vs Frequency Power Supply Rejection Ratio (PSRR) vs Frequency
V
DD
= 5V, R
L
= 8Ω, input 10Ω terminated V
DD
= 5V, R
L
= 8Ω, input floating
Figure 16. Figure 17.
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