National Semiconductor LM4985, Руководство пользователя

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Typical Demonstration Board Audio Performance (OCL Mode)
Typical OCL mode THD+N versus Output Power performance curves at V
DD
= 5V, 3.6V, and 2.5V for 16
Ω
and 32
Ω
are shown
in Figure 12 and Figure 13, respectively. Typical OCL mode THD+N versus Frequency performance curves at V
DD
= 5V, 3.6V, and
2.5V for 16
Ω
and 32
Ω
are shown in Figure 14 and Figure 15, respectively.
20184938
R
L
= 16
Ω
, f
IN
= 1kHz,
at (from left to right at 1% THD+N):
V
DD
= 2.5V, V
DD
= 3.6V, V
DD
= 5.0V
Figure 12. OCL mode THD+N vs Output Power
20184939
R
L
= 32
Ω
, f
IN
= 1kHz,
at (from left to right at 1% THD+N):
V
DD
= 2.5V, V
DD
= 3.6V, V
DD
= 5.0V
Figure 13. OCL mode THD+N vs Output Power
20184936
R
L
= 16
Ω
, f
IN
= 1kHz,
at (from top to bottom at 2kHz):
V
DD
= 2.5V, P
OUT
= 20mW, V
DD
= 3.6V, P
OUT
= 35mW,
V
DD
= 5.0V, P
OUT
= 110mW
Figure 14. OCL mode THD+N vs Frequency
20184937
R
L
= 32
Ω
, f
IN
= 1kHz,
at (from top to bottom at 2kHz):
V
DD
= 2.5V, P
OUT
= 15mW, V
DD
= 3.6V, P
OUT
= 35mW,
V
DD
= 5.0V, P
OUT
= 70mW
Figure 15. OCL mode THD+N vs Frequency
AN-1452
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