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LM4949 Datasheet(PDF) 37 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM4949
Description  Stereo Class D Audio Subsystem with OCL Headphone Amplifier
PDF  40 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4949 Datasheet(HTML) 37 Page - National Semiconductor (TI)

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Application Information (Continued)
TABLE 7. 32 Step Volume Control
Volume Step
MG4/LG4/RG4
MG3/LG3/RG3
MG2/LG2/RG2
MG1/LG1/RG1
MG0/LG0/RG0
Gain (dB)
1
00000
–57
2
00001
–49
3
00010
–42
4
00011
–34.5
5
00100
–30.5
6
00101
–27
7
00110
–24
8
00111
–21
9
01000
–18
10
01001
–15
11
01010
–13.5
12
01011
–12
13
01100
–10.5
14
01101
–9
15
01110
–7.5
16
01111
–6
17
10000
–4.5
18
10001
–3
19
10010
–1.5
20
10011
0
21
10100
1.5
22
10101
3
23
10110
4.5
24
10111
6
25
11000
7.5
26
11001
9
27
11010
10.5
28
11011
12
29
11100
13.5
30
11101
15
31
11110
16.5
32
11111
18
TABLE 8. Loudspeaker Gain Setting
LSRG1/LSLG1
LSRG0/LSLG0
Gain (dB)
_IN+
≠ _IN-
_IN+ =_IN-
0
0
12
6
0
1
10
4
10
8
2
11
6
0
TABLE 9. Headphone Gain Setting
HPG1
HPG0
Gain (dB)
00
0
01
–6
10
–12
www.national.com
37



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