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Texas Instruments APA100 User Manual

Page 37

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Total Harmonic Distortion + Noise

5-3

Measured Results

Figure 5−3. APA100 THD+N vs Output Power With 4-

W

Load

20

5

1

0.5

0.1

0.05

0.01

10 m

1

2

10

20

100 200

THD+N − T

otal Harmonic Distortion + Noise − %

P

O

− Output Power − W

f = 1 kHz,
PV

DD

= 15 V, 18 V, 20 V, 24 V,

28 V, 29.5 V

Figure 5−4. APA100 THD+N vs Output Power With 8-

W

Load

20

5

1

0.5

0.1

0.05

0.01

10 m

1

2

10

20

100 200

THD+N − T

otal Harmonic Distortion + Noise − %

P

O

− Output Power − W

f = 1 kHz,
PV

DD

= 15 V, 18 V, 20 V, 24 V,

28 V, 29.5 V