LM49251 Datasheet, PDF (23/42 Pages) Texas Instruments – Stereo Audio Subsystem with Class G Headphone Amplifier and Class D Speaker Amplifier with Speaker Protection

General Amplifier Function
TABLE 9. Volume Control Table
VOLUME STEP
_G4
_G3
_G2
_G1
_G0
1
0
0
0
0
0
2
0
0
0
0
1
3
0
0
0
1
0
4
0
0
0
1
1
5
0
0
1
0
0
6
0
0
1
0
1
7
0
0
1
1
0
8
0
0
1
1
1
9
0
1
0
0
0
10
0
1
0
0
1
11
0
1
0
1
0
12
0
1
0
1
1
13
0
1
1
0
0
14
0
1
1
0
1
15
0
1
1
1
0
16
0
1
1
1
1
17
1
0
0
0
0
18
1
0
0
0
1
19
1
0
0
1
0
20
1
0
0
1
1
21
1
0
1
0
0
22
1
0
1
0
1
23
1
0
1
1
0
24
1
0
1
1
1
25
1
1
0
0
0
26
1
1
0
0
1
27
1
1
0
1
0
28
1
1
0
1
1
29
1
1
1
0
0
30
1
1
1
0
1
31
1
1
1
1
0
32
1
1
1
1
1
GAIN (dB)
-80
-46.5
-40.5
-34.5
-30
-27
-24
-21
-18
-15
-13.5
-12
-10.5
-9
-7.5
-6
-4.5
-3
1.5
0
1.5
3
4.5
6
7.5
9
10.5
12
X
X
X
X
www.national.com
22