Cirrus-logic CS43L22 Uživatelský manuál stáhnout pdf (Strana 59)

DS792F2 59

CS43L22

Confidential Draft

3/4/10

8. ANALOG PERFORMANCE PLOTS

8.1 Headphone THD+N versus Output Power Plots

Test conditions (unless otherwise specified): Input test signal is a 997 Hz sine wave; measurement band-

width is 10 Hz to 20 kHz; Fs = 48 kHz.

G = 0.6047

G = 0.7099

G = 0.8399

G = 1.0000

G = 1.1430

Legend

-100

-10

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

0 80m10m 20m 30m 40m 50m 60m 70m

Figure 18. THD+N vs. Output Power per Channel at 1.8 V (16 Ω load)

VHP = VA = 1.8 V

NOTE: Graph shows the out-

put power per channel (i.e.

Output Power = 23 mW into

single 16 Ω and 46 mW into

stereo 16 Ω with THD+N = -

75 dB).

G = 0.6047

G = 0.7099

G = 0.8399

G = 1.0000

G = 1.1430

Legend

-100

-10

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

0 80m10m 20m 30m 40m 50m 60m 70m

Figure 19. THD+N vs. Output Power per Channel at 2.5 V (16 Ω load)

VHP = VA = 2.5 V

NOTE: Graph shows the out-

put power per channel (i.e.

Output Power = 44 mW into

single 16 Ω and 88 mW into

stereo 16 Ω with THD+N = -

75 dB).

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