Data Sheet
AD5290
V
C1
IN
5V
1µF
U1
V
+15V
R1
+5V
100kΩ
DD
C3
0.1µF
A
AD5290
U2
V+
C2
0.1µF
R2
200Ω
ADCM371
V–
+15V
R4
V
SS
W
90kΩ
–15V
U4A
U5
V+
U4B
V
4
5
100kΩ
OUT
6
1
2
+5V
7408
CS
7408
R5
10kΩ
V–
U3
V+
ADCM371
V–
5V
CLK
SDI
CLK
SDI
B
–15V
U6
V+
CS
GND
R3
100kΩ
AD8541
V–
Figure 35. Audio Volume Control with Zipper Noise Reduction
1
2
CHANNEL 1
FREQ = 20.25kHz
1.03V p-p
Figure 36. Input (Trace 1) and Output (Trace 2) of the Circuit in Figure 35
(The Command of Volume Change May Occur at Any Time, but the Level Change Occurs Only Near the Zero-Crossing Window)
Rev. C | Page 19 of 20