TPA0172
2-W STEREO AUDIO POWER AMPLIFIER
WITH I
2
C BUS
SLOS327C – AUGUST 2000 – REVISED MAY 2001
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 5
0.001
10
0.01
0.1
1
20 20k100 1k 10k
P
O
= 75 mW
R
L
= 32 Ω
A
V
= 14 to 0 dB
Mode = SE
THD+N – Total Harmonic Distortion Plus Noise – %
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
Figure 6
10
0.01
0.1
1
1m 500m10m 100m 200m
f = 20 kHz
f = 20 Hz
f = 1 kHz
R
L
= 32 Ω
A
V
= 14 to 0 dB
Mode = SE
THD+N – Total Harmonic Distortion Plus Noise – %
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
P
O
– Output Power – W
Figure 7
10 100 1 k 10 k
0
20
40
60
80
V
DD
= 5 V,
R
L
= 8 Ω,
Mode = BTL,
Right Channel
– Output Noise Voltage –
f – Frequency – Hz
OUTPUT NOISE VOLTAGE
vs
FREQUENCY
V
n
Vµ
RMS
A
V
= 20 dB
20 k
10
30
50
70
A
V
= 6 dB
Figure 8
–100
0
–90
–80
–70
–60
–50
–40
–30
–20
–10
20 20k100 1k 10k
R
L
= 8 Ω
C
B
= 0.47 µF
Mode = BTL
Supply Ripple Rejection Ratio – dB
SUPPLY RIPPLE REJECTION RATIO
vs
FREQUENCY
A
V
= 6 dB
f – Frequency – Hz
A
V
= 20 dB
