LM4673_15 Datasheet, PDF (7/28 Pages) Texas Instruments – Filterless, 2.65W, Mono, Class D Audio Power

LM4673, LM4673SDBD, LM4673TMBD
www.ti.com
SNAS317D – DECEMBER 2005 – REVISED MAY 2013
Typical Performance Characteristics (continued)
The performance graphs were taken using the Audio Precision AUX-0025 Switching Amplifier measurement Filter in series
with the LC filter on the demo board.
THD + N vs Frequency
V_DD = 5V, P_OUT = 200mW, R_L = 8Ω
THD + N vs Frequency
V_DD = 2.5V, P_OUT = 100mW, R_L = 4Ω
100
100
10
10
1
1
0.1
0.1
0.01
0.01
0.001
10
100
1000 10000 100000
FREQUENCY (Hz)
Figure 8.
THD + N vs Frequency
V_DD = 3.6V, P_OUT = 100mW, R_L = 4Ω
100
0.001
10
100
1000 10000 100000
FREQUENCY (Hz)
Figure 9.
THD + N vs Frequency
V_DD = 5V, P_OUT = 150mW, R_L = 4Ω
100
10
10
1
1
0.1
0.1
0.01
0.01
0.001
10
100
1000 10000 100000
FREQUENCY (Hz)
Figure 10.
0.001
10
100
1000 10000 100000
FREQUENCY (Hz)
Figure 11.
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