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LM49352 数据表(PDF) 23 Page - Texas Instruments

部件名 LM49352
功能描述  Boomer Mono Class D Audio Codec Subsystem with Ground Referenced Headphone Amplifiers, Earpiece Driver, and Audio DSP
PDF  106 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

LM49352 数据表(HTML) 23 Page - Texas Instruments

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background image
-120
-20
-110
-100
-90
-80
-70
-60
-50
-40
-30
20
100k
100
1k
10k
FREQUENCY (Hz)
-100
0
-90
-80
-70
-60
-50
-40
-30
-20
-10
20
100k
100
1k
10k
FREQUENCY (Hz)
-100
0
-90
-80
-70
-60
-50
-40
-30
-20
-10
20
100k
100
1k
10k
FREQUENCY (Hz)
0.001
100m
OUTPUT POWER (W)
10
1
10m
1m
2m
5m
0.01
0.1
LM49352
www.ti.com
SNAS467E – MARCH 2009 – REVISED MARCH 2013
Typical Performance Characteristics (continued)
Headphone THD+N vs Output Power
MONO/AUX Input, MONO/AUX Gain = 0dB, HP Gain = 0dB
Headphone PSRR vs Frequency
Stereo In Phase, fIN = 1kHz, RL = 16Ω
MONO/AUX Input, MONO/AUX Gain = 0dB, HP Gain = 0dB
Blue >> HPVDD = 1.8V
HPVDD = 1.8V, AVDD = 3.3V, VRIPPLE = 200mVPP
Light Blue >> HPVDD = 2.8V
Ripple on HPVDD, AVDD
Figure 40.
Figure 41.
Headphone PSRR vs Frequency
Headphone PSRR vs Frequency
DAC Input, DAC Gain = 0dB, HP Gain = 0dB
MONO/AUX Input, MONO/AUX Gain = 0dB, HP Gain = 0dB
HPVDD = 1.8V, AVDD = 3.3V, DVDD = 1.8V, VRIPPLE =
HPVDD = 1.8V, AVDD = 3.3V, VRIPPLE = 200mVPP
200mVPP
Ripple on AVDD only
Ripple on HPVDD, AVDD, DVDD
Figure 42.
Figure 43.
Copyright © 2009–2013, Texas Instruments Incorporated
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