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LM4931ITL/NOPB Datasheet(PDF) 24 Page - Texas Instruments

Part # LM4931ITL/NOPB
Description  LM4931 Boomer™ Audio Power Amplifier Series Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers
PDF  50 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM4931ITL/NOPB Datasheet(HTML) 24 Page - Texas Instruments

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20
20k
FREQUENCY (Hz)
-6
+1
10k
1k 2k
5k
50 100 200 500
-5
-4
-3
-1
-2
-0
-2
10k
FREQUENCY (Hz)
8k
6k
4k
2k
12k 14k 16k 18k 20k
-1.5
-1
-0.5
+0
+0.5
+1
+1.5
+2
0
1
2
3
4
5
HEADPHONE SENSE IN
(V)
0
1
2
3
4
5
0
0.5
1
1.5
2
2.5
3
HEADPHONE SENSE IN (V)
0
0.5
1
1.5
2
2.5
3
4k
200
FREQUENCY (Hz)
-100
-95
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
+0
3k
2k
1k
300
400
500
600
700
800
900
4k
200
FREQUENCY (Hz)
-100
-95
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
+0
3k
2k
1k
300
400
500
600
700
800
900
LM4931
SNAS251E – APRIL 2004 – REVISED MAY 2013
www.ti.com
Typical Performance Characteristics (continued)
MIC PreAmp + ADC PSRR vs Frequency
MIC PreAmp + ADC PSRR vs Frequency
Top Trace = 36dB MIC Gain, Bottom Trace = 6dB MIC Gain,
Top Trace = 36dB MIC Gain, Bottom Trace = 6dB MIC Gain,
AVDD = 5V
AVDD = 3V
Figure 20.
Figure 21.
Headphone Sense In Hysteresis Loop
Headphone Sense In Hysteresis Loop
(AVDD = 3V)
(AVDD = 5V)
Figure 22.
Figure 23.
I2S DAC Frequency Response
I2S DAC Frequency Response Zoom
( Handsfree Output)
(Handsfree Output)
Figure 24.
Figure 25.
24
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Copyright © 2004–2013, Texas Instruments Incorporated
Product Folder Links: LM4931



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