MAX9723(2005) データシートの表示（PDF） - Maxim Integrated
部品番号
コンポーネント説明
メーカー
MAX9723
(Rev.:2005)
(Rev.:2005)
Maxim Integrated
MAX9723 Datasheet PDF : 23 Pages
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Stereo DirectDrive Headphone Amplifier with
BassMax, Volume Control, and I2C
Table 7. MAX9723A and MAX9723B Gain
Settings (Bit 5 = 1, Max Gain = 0dB)
B4
B3
B2
B1
B0
(LSB)
GAIN
(dB)
1
1
1
1
1
0
1
1
1
1
0
-0.5
1
1
1
0
1
-1
1
1
1
0
0
-1.5
1
1
0
1
1
-2
1
1
0
1
0
-2.5
1
1
0
0
1
-3
1
1
0
0
0
-4
1
0
1
1
1
-5
1
0
1
1
0
-6
1
0
1
0
1
-7
1
0
1
0
0
-9
1
0
0
1
1
-11
1
0
0
1
0
-13
1
0
0
0
1
-15
1
0
0
0
0
-17
0
1
1
1
1
-19
0
1
1
1
0
-21
0
1
1
0
1
-23
0
1
1
0
0
-25
0
1
0
1
1
-27
0
1
0
1
0
-29
0
1
0
0
1
-31
0
1
0
0
0
-33
0
0
1
1
1
-35
0
0
1
1
0
-37
0
0
1
0
1
-39
0
0
1
0
0
-41
0
0
0
1
1
-43
0
0
0
1
0
-45
0
0
0
0
1
-47
0
0
0
0
0
MUTE
Table 8. MAX9723A and MAX9723B Gain
Settings (B5 = 0, Max Gain = -5dB)
B4
B3
B2
B1
B0
(LSB)
GAIN
(dB)
1
1
1
1
1
-5
1
1
1
1
0
-6
1
1
1
0
1
-7
1
1
1
0
0
-9
1
1
0
1
1
-11
1
1
0
1
0
-13
1
1
0
0
1
-15
1
1
0
0
0
-17
1
0
1
1
1
-19
1
0
1
1
0
-21
1
0
1
0
1
-23
1
0
1
0
0
-25
1
0
0
1
1
-27
1
0
0
1
0
-29
1
0
0
0
1
-31
1
0
0
0
0
-33
0
1
1
1
1
-35
0
1
1
1
0
-37
0
1
1
0
1
-39
0
1
1
0
0
-41
0
1
0
1
1
-43
0
1
0
1
0
-45
0
1
0
0
1
-47
0
1
0
0
0
-51
0
0
1
1
1
-55
0
0
1
1
0
-59
0
0
1
0
1
-63
0
0
1
0
0
-67
0
0
0
1
1
-71
0
0
0
1
0
-75
0
0
0
0
1
-79
0
0
0
0
0
MUTE
the amplifier in dB determined by the maximum gain set-
ting (Bit 5) or the combination of the maximum gain set-
ting plus bass boost (see the BassMax Gain-Setting
Components section).
Component Selection
Input-Coupling Capacitor
The AC-coupling capacitor (CIN) and internal gain-set-
ting resistor form a highpass filter that removes any DC
bias from an input signal (see the Functional Diagram/
Typical Operating Circuit). CIN allows the MAX9723 to
bias the signal to an optimum DC level. The -3dB point
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