PAM8606
6W Stereo Class-D Audio Power Amplifier with DC Volume Control
Table 1. DC Volume Control
Step
1
Volume
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
Gain (dB)
-75
-40
-30
-20
-10
-5
Rf (kΩ)
0.40
Ri (kΩ)
200.00
199.60
198.74
196.08
188.10
179.78
166.67
147.53
122.51
116.98
111.35
105.63
99.88
94.13
88.42
82.79
77.26
71.88
66.67
61.65
56.85
52.29
47.96
43.89
40.08
36.51
33.20
30.14
27.31
24.70
22.32
20.13
2
1.26
3
3.92
4
11.90
5
20.22
6
33.33
7
0
52.47
8
5
77.49
9
10
83.02
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
11
88.65
12
94.37
13
100.12
105.87
111.58
117.21
122.74
128.12
133.33
138.35
143.15
147.71
152.04
156.11
159.92
163.49
166.80
169.86
172.69
175.30
177.68
179.87
200.00
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Note:
Volume: DC voltage on Volume pin
Rf: Internal pre-amplifier feedback resistance
Ri: Internal pre-amplifier input resistance
Calculation Gain=20log(5XRf/Ri),there is one dB tolerance from device to device.
Power Analog Microelectronics,Inc
www.poweranalog.com
08/2008 Rev 1.1
7
PAM [ POWER ANALOG MICOELECTRONICS ]
