LM4952_15 Datasheet, PDF (7/25 Pages) Texas Instruments – Boomer Audio Power Amplifier Series 3.1W Stereo-SE Audio Power Amplifier with DC Volume Control

LM4952
www.ti.com
SNAS230A – AUGUST 2004 – REVISED MAY 2013
Typical Performance Characteristics (continued)
A_V = 20dB and T_A = 25°C, unless otherwise noted.
Amplifier Gain vs Part-to-Part DC Volume Voltage
Variation (Five parts)
20
10
THD+N vs Frequency
10
5
0
-10
-20
-30
-40
-50
-60
-70
-80
-0 +0.5 +1 +1.5 +2 +2.5 +3 +3.5 +4 +4.5 +5
DC VOLUME VOLTAGE (V)
V_DD = 12V, R_L = 8Ω,
Figure 15.
2
1
0.5
0.2
0.1
0.05
0.02
0.01
20 50 100 200 500 1k 2k 5k 10k 20k
FREQUENCY (Hz)
V_DD = 9.6V, R_L = 4Ω,
P_OUT = 1.1W, C_IN = 1.0µF
Figure 16.
THD+N vs Frequency
10
5
2
1
0.5
0.2
0.1
0.05
0.02
0.01
20 50 100 200 500 1k 2k 5k 10k 20k
FREQUENCY (Hz)
V_DD = 9.6V, R_L = 8Ω,
P_OUT = 850mW, C_IN = 1.0µF
Figure 17.
THD+N vs Output Power
10
5
2
1
0.5
0.2
0.1
0.05
0.02
0.01
10m 20m 50m 100m 200m 500m 1 2 5 6
V_DD = 9.6V, R_L = 4Ω,
f_IN = 1kHz
OUTPUT POWER (W)
Figure 18.
THD+N vs Output Power
10
5
2
1
0.5
0.2
0.1
0.05
0.02
0.01
10m 20m 50m 100m 200m 500m 1 2 5 6
V_DD = 9.6V, R_L = 8Ω,
f_IN = 1kHz
OUTPUT POWER (W)
Figure 19.
Total Power Dissipation vs Load Dissipation
V_DD = 9.6V, f_IN = 1kHz
at (from top to bottom at 1W):
R_L = 4Ω, R_L = 8Ω
Figure 20.
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