Datasheet

LM4940
SNAS219C –OCTOBER 2003–REVISED MAY 2013 www.ti.com
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Output Power vs Power Supply Voltage Power Supply Rejection vs Frequency
R
L
= 16Ω, SE operation, f
IN
= 1kHz,
V
DD
= 12V, R
L
= 8Ω, SE operation,
both channels driven and loaded (average shown),
V
RIPPLE
= 200mV
p-p
, at (from top to bottom at 60Hz):
at (from top to bottom at 12V): THD+N = 10%,
C
BYPASS
= 1µF, C
BYPASS
= 4.7µF, C
BYPASS
= 10µF
THD+N = 1%
Figure 15. Figure 16.
Power Supply Rejection vs Frequency Total Power Dissipation vs Load Dissipation
V
DD
= 12V, SE operation, f
IN
= 1kHz,
V
DD
= 12V, R
L
= 8Ω, SE operation, V
RIPPLE
= 200mV
p-p
,
at (from top to bottom at 1W):
A
V
= 10, at (from top to bottom at 60Hz):
R
L
= 4Ω, R
L
= 8Ω
C
BYPASS
= 1µF, C
BYPASS
= 4.7µF, C
BYPASS
= 10µF
Figure 17. Figure 18.
Output Power vs Load Resistance Channel-to-Channel Crosstalk vs Frequency
V
DD
= 12V, SE operation, f
IN
= 1kHz,
V
DD
= 12V, R
L
= 4Ω, P
OUT
= 1W, SE operation,
both channels driven and loaded,
at (from top to bottom at 1kHz): V
INB
driven,
at (from top to bottom at 15Ω):
V
OUTA
measured; V
INA
driven, V
OUTB
measured
THD+N = 10%, THD+N = 1%
Figure 19. Figure 20.
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