LM4946 Datasheet, PDF (18/37 Pages) Texas Instruments – Output Capacitor-Less Audio Subsystem with Programmable TI 3D

LM4946
SNAS335E – JANUARY 2006 – REVISED AUGUST 2007
www.ti.com
Typical Performance Characteristics (continued)
Power Dissipation vs Output Power
V_DD = 3.3V, R_L = 32Ω
f = 1kHz, Mode 2, 4, 6, SE
100
Power Dissipation vs Output Power
V_DD = 5V, R_L = 8Ω
f = 1kHz, Mode 1, 3, 5, BTL
700
90
600
80
70
500
60
400
50
40
300
30
20
10
0
0
10
20
30
40
50
200
100
0
0
200 400 600 800 1000 1200
OUTPUT POWER (mW)
Figure 47.
OuUTPUT POWER (mW)
Figure 48.
Power Dissipation vs Output Power
V_DD = 5V, R_L = 32Ω
f = 1kHz, Mode 2, 4, 6, OCL
300
Power Dissipation vs Output Power
V_DD = 3.3V, R_L = 8Ω, f = 1kHz,
Modes 1, 3, 5, BTL
350
250
300
250
200
200
150
150
100
100
50
50
0
0
20
40
60
80 100
OUTPUT POWER (mW)
Figure 49.
0
0 50 100 150 200 250 300 350
OUTPUT POWER (mW)
Figure 50.
Power Dissipation vs Output Power
V_DD = 3.3V, R_L = 32Ω, f = 1kHz,
Modes 2, 4, 6, OCL
250
Power Dissipation vs Output Power
V_DD = 3.3V, R_L = 8Ω, f = 1kHz,
Mode 7, OCL
250
200
200
150
150
100
100
50
50
0
0
10
20
30
40
50
OUTPUT POWER (mW)
Figure 51.
0
0
10
20
30
40
50
OUTPUT POWER (mW)
Figure 52.
18
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