SSM4321ACBZ-R7 datasheet(12/24 Pages) AD

12 / 24 page

SSM4321

Data Sheet

Rev. 0 | Page 12 of 24

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

20k

200

FREQUENCY (Hz)

RL = 8Ω + 33µH

Figure 27. Power Supply Rejection Ratio (PSRR) vs. Frequency,

PVDD = 5 V, RL = 8 Ω

–160

–140

–120

–100

–80

–60

–40

–20

100k

10k

100

FREQUENCY (Hz)

PVDD = 2.5V

PVDD = 5.0V

PVDD = 3.6V

RL = 8Ω +33µH

Figure 28. Output Spectrum vs. Frequency (FFT), POUT = 100 mW, RL = 8 Ω

1.0

–1.0

–0.5

0.5

–80

–20

–40

–60

–10

–30

–50

–70

INPUT LEVEL (dBr)

Figure 29. Current Sense Linearity

1.0

0.8

0.6

0.4

0.2

2.5

3.0

3.5

4.0

4.5

5.0

5.5

PVDD (V)

RL = 8Ω + 33µH

Figure 30. PVDD ADC Sense Level vs. PVDD Range, RL = 8 Ω

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

0.01

0.1

OUTPUT POWER (W)

RL = 8Ω + 33µH

48kHz ISENSE

48kHz VSENSE

24kHz VSENSE

24kHz ISENSE

Figure 31. Sense ADC THD + N vs. Output Power into 8 Ω

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

0.01

0.1

OUTPUT POWER (W)

RL = 4Ω + 15µH

48kHz ISENSE

48kHz VSENSE

24kHz VSENSE

24kHz ISENSE

Figure 32. Sense ADC THD + N vs. Output Power into 4 Ω

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