Datasheet

TPA311
350-mW MONO AUDIO POWER AMPLIFIER
SLOS207C – JANUARY 1998 – REVISED MAY 2003
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 28
f – Frequency – Hz
THD+N –Total Harmonic Distortion + Noise – %
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
V
DD
= 3.3 V
P
O
= 0.1 mW
R
L
= 10 kΩ
SE
20 1k 10k
0.1
0.01
1
20k100
A
V
= –1 V/V
A
V
= –2 V/V
A
V
= –5 V/V
Figure 29
f – Frequency – Hz
THD+N –Total Harmonic Distortion + Noise – %
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
V
DD
= 3.3 V
R
L
= 10 kΩ
A
V
= –1 V/V
SE
20 1 k 10 k
0.1
0.01
1
20 k100
P
O
= 0.13 mW
P
O
= 0.1 mW
P
O
= 0.05 mW
Figure 30
THD+N –Total Harmonic Distortion + Noise – %
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
V
DD
= 3.3 V
f = 1 kHz
R
L
= 10 kΩ
A
V
= –1 V/V
SE
0.1
0.001
10
0.01
1
P
O
– Output Power – µW
50 75 200100 125 150 175
Figure 31
P
O
– Output Power – µW
THD+N –Total Harmonic Distortion + Noise – %
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
f = 20 Hz
V
DD
= 3.3 V
R
L
= 10 kΩ
A
V
= –1 V/V
SE
f = 1 kHz
f = 10 kHz
f = 20 kHz
5 100 500
0.1
0.001
10
0.01
1
10