LM49151 Datasheet, PDF (13/34 Pages) National Semiconductor (TI) – Mono Class D Audio Subsystem with Earpiece Driver, Ground Referenced Headphone Amplifiers, Speaker Protection and No Clip with Clip Control

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LM49151
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SNAS482F – MARCH 2009 – REVISED MARCH 2013
Typical Performance Characteristics⁽¹⁾ (continued)
THD+N vs Output Power
V_DD = 3.3V, R_L = 32Ω, f = 1kHz
Headphone Mode 8
10
THD+N vs Output Power
V_DD = 5V, R_L = 32Ω, f = 1kHz
Headphone Mode 8
10
1
1
0.1
0.1
0.01
0.001
1m
10m
OUTPUT POWER (W)
Figure 15.
100m
THD+N vs Output Power
V_DD = 3.6V, R_L = 32Ω, f = 1kHz
Headphone Mode 8
10
1
0.1
0.01
0.001
1m
10m
OUTPUT POWER (W)
Figure 17.
100m
Output Power vs Supply Voltage
R_L = 8Ω, f = 1kHz
Speaker Mode 1
2000
1750
1500
1250
THD+N = 10%
1000
750
THD+N = 1%
500
250
0
2.5 3 3.5 4 4.5 5 5.5
SUPPLY VOLTAGE (V)
Figure 19.
0.01
0.001
1m
10m
OUTPUT POWER (W)
Figure 16.
100m
THD+N vs Output Power
R_L = 32Ω, f = 1kHz
Earpiece Bypass Mode
10
V_DD = 5V
V_DD = 3.6V
1
V_DD = 3.3V
0.1
0.01
10m
50m
OUTPUT POWER (W)
Figure 18.
200m
Output Power vs Supply Voltage
R_L = 32Ω, f = 1kHz
Headphone Mode 8
70
THD+N = 10%
60
50
40
30
THD+N = 1%
20
10
0
2.5 3 3.5 4 4.5 5 5.5
SUPPLY VOLTAGE (V)
Figure 20.
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