Datasheet

MAX9728A/MAX9728B
60mW, DirectDrive, Stereo Headphone
Amplifier with Shutdown
______________________________________________________________________________________ 11
MAX9728A ACTIVE FILTER GAIN
vs. FREQUENCY
FREQUENCY (Hz)
GAIN (dB)
100k10k
-30
-25
-20
-15
-10
-5
0
5
10
-35
1k 1M
R
L
= 10kΩ
Figure 5. Frequency Response of Active Filter of Figure 4
LEFT
AUDIO
INPUT
RIGHT
AUDIO
INPUT
OUTL
INL
INR
OUTR
MAX9728A
7.5kΩ 7.5kΩ
7.5kΩ 7.5kΩ
15kΩ
10kΩ
10kΩ
15kΩ
1.2nF
1.2nF
220pF
220pF
LINE-IN DEVICE
STEREO
DAC
1μF
1μF
Figure 4. MAX9728A Line-Out Amplifier and Filter Block Configuration