Datasheet

TPA311
350-mW MONO AUDIO POWER AMPLIFIER
SLOS207C – JANUARY 1998 – REVISED MAY 2003
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 12
f – Frequency – Hz
THD+N –Total Harmonic Distortion + Noise – %
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
A
V
= –2 V/V
V
DD
= 3.3 V
P
O
= 250 mW
R
L
= 8 Ω
BTL
20 1k 10k
1
0.01
10
0.1
20k100
A
V
= –20 V/V
A
V
= –10 V/V
Figure 13
f – Frequency – Hz
THD+N –Total Harmonic Distortion + Noise – %
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
P
O
= 125 mW
V
DD
= 3.3 V
R
L
= 8 Ω
A
V
= –2 V/V
BTL
20 1k 10k
1
0.01
10
0.1
20k100
P
O
= 50 mW
P
O
= 250 mW
Figure 14
P
O
– Output Power – W
THD+N –Total Harmonic Distortion + Noise – %
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
R
L
= 8 Ω
0.04 0.1 0.4
1
0.01
10
0.1
0.16 0.22 0.28 0.34
V
DD
= 3.3 V
f = 1 kHz
A
V
= –2 V/V
BTL
Figure 15
P
O
– Output Power – W
THD+N –Total Harmonic Distortion + Noise – %
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
f = 20 Hz
V
DD
= 3.3 V
R
L
= 8 Ω
A
V
= –2 V/V
BTL
0.01 0.1 1
1
0.01
10
0.1
f = 1 kHz
f = 10 kHz
f = 20 kHz