2.6W Stereo Audio Power Amplifiers and
DirectDrive Headphone Amplifiers
Table 3C. MAX9750C Volume Levels
VVOL (V)
VMIN*
VMAX* HPVDD*
0
0.49
0.5673
0.6447
0.722
0.7994
0.8767
0.9541
1.0314
1.1088
1.1861
1.2635
1.3408
1.4182
1.4955
1.5728
1.6502
1.7275
1.8049
1.8822
1.9596
2.0369
2.1143
2.1916
2.269
2.3463
2.4237
2.501
2.5783
2.6557
2.733
2.8104
0.49
0.5673
0.6447
0.722
0.7994
0.8767
0.9541
1.0314
1.1088
1.1861
1.2635
1.3408
1.4182
1.4955
1.5728
1.6502
1.7275
1.8049
1.8822
1.9596
2.0369
2.1143
2.1916
2.269
2.3463
2.4237
2.501
2.5783
2.6557
2.733
2.8104
3.3
*Based on HPVDD = 3.3V
X = Don’t care.
0.074
0.160
0.183
0.207
0.230
0.253
0.277
0.300
0.324
0.347
0.371
0.394
0.418
0.441
0.464
0.488
0.511
0.535
0.558
0.582
0.605
0.628
0.652
0.675
0.699
0.722
0.746
0.769
0.793
0.816
0.839
0.858
SPEAKER MODE GAIN (dB)
GAIN1 = 0, GAIN1 = 1, GAIN1 = 0, GAIN1 = 1
GAIN2 = 0 GAIN2 = 0 GAIN2 = 1 GAIN2 = 1
6
7.5
9
10.5
5
7
8.5
10
4
6
8
9.5
3
5
7.5
9
1
4
7
8.5
-1
3
6
8
-3
1
5
7.5
-5
-1
4
7
-7
-3
3
6
-9
-5
1
5
-11
-7
-1
4
-13
-9
-3
3
-15
-11
-5
1
-17
-13
-7
-1
-19
-15
-9
-3
-21
-17
-11
-5
-23
-19
-13
-7
-25
-21
-15
-9
-27
-23
-17
-11
-29
-25
-9
-13
-31
-27
-21
-15
-33
-29
-23
-17
-35
-31
-2
-19
-37
-3
-27
-21
-41
-35
-29
-23
-45
-37
-31
-25
-48
-41
-33
-27
-53
-45
-35
-29
-57
-49
-37
-31
-61
-53
-41
-33
-65
-57
-45
-35
MUTE
MUTE
MUTE
MUTE
HEADPHONE MODE GAIN (dB)
GAIN1 = X,
GAIN2 = 0
GAIN1 = X,
GAIN2 = 1
0
3
-1
2.5
-2
2
-3
1.5
-5
1
-7
0
-9
-1
-11
-2
-13
-3
-15
-5
-17
-7
-19
-9
-21
-11
-23
-13
-25
-15
-27
-17
-29
-19
-31
-21
-33
-23
-35
-25
-37
-27
-39
-29
-41
-31
-43
-33
-47
-35
-51
-37
-55
-39
-59
-41
-63
-43
-67
-47
-71
-51
MUTE
MUTE
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