Datasheet

signal to an optimum DC level. The -3dB point of the high-
pass filter, assuming zero-source impedance, is given by:
3dB
IN IN
1
f
2R C
−
=
π× ×
Table 9. MAX9723C and MAX9723D Gain
Settings (B5 = 1, Max Gain = +6dB)
Table 10. MAX9723C and MAX9723D Gain
Settings (B5 = 0, Max Gain = +1dB)
Table 11. Initial Power-Up Command
Register Status
B4 B3 B2 B1
B0
(LSB)
GAIN
(dB)
1 1 1 1 1 6
1 1 1 1 0 5.5
1 1 1 0 1 5
1 1 1 0 0 4.5
1 1 0 1 1 4
1 1 0 1 0 3.5
1 1 0 0 1 3
1 1 0 0 0 2
1 0 1 1 1 1
1 0 1 1 0 0
1 0 1 0 1 -1
1 0 1 0 0 -3
1 0 0 1 1 -5
1 0 0 1 0 -7
1 0 0 0 1 -9
1 0 0 0 0 -11
0 1 1 1 1 -13
0 1 1 1 0 -15
0 1 1 0 1 -17
0 1 1 0 0 -19
0 1 0 1 1 -21
0 1 0 1 0 -23
0 1 0 0 1 -25
0 1 0 0 0 -27
0 0 1 1 1 -29
0 0 1 1 0 -31
0 0 1 0 1 -33
0 0 1 0 0 -35
0 0 0 1 1 -37
0 0 0 1 0 -39
0 0 0 0 1 -41
0 0 0 0 0 MUTE
B4 B3 B2 B1
B0
(LSB)
GAIN
(dB)
1 1 1 1 1 1
1 1 1 1 0 0
1 1 1 0 1 -1
1 1 1 0 0 -3
1 1 0 1 1 -5
1 1 0 1 0 -7
1 1 0 0 1 -9
1 1 0 0 0 -11
1 0 1 1 1 -13
1 0 1 1 0 -15
1 0 1 0 1 -17
1 0 1 0 0 -19
1 0 0 1 1 -21
1 0 0 1 0 -23
1 0 0 0 1 -25
1 0 0 0 0 -27
0 1 1 1 1 -29
0 1 1 1 0 -31
0 1 1 0 1 -33
0 1 1 0 0 -35
0 1 0 1 1 -37
0 1 0 1 0 -39
0 1 0 0 1 -41
0 1 0 0 0 -45
0 0 1 1 1 -49
0 0 1 1 0 -53
0 0 1 0 1 -57
0 0 1 0 0 -61
0 0 0 1 1 -65
0 0 0 1 0 -69
0 0 0 0 1 -73
0 0 0 0 0 MUTE
MODE B7 B6 B5 B4 B3 B2 B1 B0
Power-On
Reset
1 1 1 1 1 1 1 1
MAX9723 Stereo DirectDrive Headphone Amplier
with BassMax, Volume Control, and I
2
C
www.maximintegrated.com
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