Datasheet

LM4670
SNAS240C –DECEMBER 2004–REVISED MAY 2013 www.ti.com
Typical Performance Characteristics
(1)
THD+N vs Frequency THD+N vs Frequency
V
DD
= 2.5V, R
L
= 15µH + 4Ω + 15µH V
DD
= 3.6V, R
L
= 15µH + 4Ω + 15µH
P
OUT
= 375mW, 22kHz BW P
OUT
= 750mW, 22kHz BW
Figure 4. Figure 5.
THD+N vs Frequency THD+N vs Frequency
V
DD
= 5V, R
L
= 15µH + 4Ω + 15µH V
DD
= 2.5V, R
L
= 15µH + 8Ω + 15µH
P
OUT
= 1.5W, 22kHz BW P
OUT
= 200mW, 22kHz BW
Figure 6. Figure 7.
THD+N vs Frequency THD+N vs Frequency
V
DD
= 3.6V, R
L
= 15µH + 8Ω + 15µH V
DD
= 5V, R
L
= 15µH + 8Ω + 15µH
P
OUT
= 500mW, 22kHz BW P
OUT
= 1W, 22kHz BW
Figure 8. Figure 9.
(1) The performance graphs were taken using the Audio Precision AUX-0025 Switching Amplifier Measurement Filter in series with the LC
filter on the board.
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