SLOS597 – DECEMBER 2008
...........................................................................................................................................................................................
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TYPICAL CHARACTERISTICS (continued)
TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY
1
TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY
1
THD+N - Total Harmonic Distortion + Noise - %
THD+N - Total Harmonic Distortion + Noise - %
R
L
= 32
W
,
V
DD
= 3.6 V
P
O
= 1 mW per Channel
0.1
P
O
= 10 mW per Channel
R
L
= 32
W
,
V
DD
= 5 V
P
O
= 1 mW per Channel
0.1
P
O
= 20 mW per Channel
0.01
0.01
P
O
= 20 mW per Channel
P
O
= 10 mW per Channel
0.001
20
100
1k
f - Frequency - Hz
10k
20k
0.001
20
100
1k
f - Frequency - Hz
10k
20k
Figure 7.
OUTPUT POWER vs SUPPLY VOLTAGE
50
R
L
= 16
W
45
45
50
R
L
= 32
W
Figure 8.
OUTPUT POWER vs SUPPLY VOLTAGE
P
O
- Output Power per Channel - mW
40
THD+N = 10%
35
30
THD+N = 1%
25
20
15
10
5
0
2.5
P
O
- Output Power per Channel - mW
40
35
THD+N = 10%
30
25
20
15
10
5
THD+N = 1%
3
3.5
4
4.5
V
DD
- Supply Voltage - V
5
5.5
0
2.5
3
3.5
4
4.5
V
DD
- Supply Voltage - V
5
5.5
Figure 9.
OUTPUT POWER vs LOAD RESISTANCE
40
30
Figure 10.
OUTPUT POWER vs LOAD RESISTANCE
HPVSS and Flying Cap = 1
m
F
P
O
- Output Power per Channel - mW
P
O
- Output Power per Channel - mW
25
HPVSS and Flying Cap = 2.2
m
F
20
V
DD
= 3.6 V, 10% THD+N
10
V
DD
= 2.5 V, 10% THD+N
V
DD
= 2.5 V, 1% THD+N
V
DD
= 3.6 V, 1% THD+N
15
10
HPVSS and Flying Cap = 0.47
m
F
5
THD+N = 1%,
V
DD
= 3.6 V
100
R
L
- Load Resistance -
W
200
f = 1 kHz
1
10
100
R
L
- Load Resistance -
W
1000
0
10
Figure 11.
Figure 12.
8
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