SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
Table 1. DC Volume Control
(V
DD
= 12V, No Load, Volme pin = 5V)
Voltage on volume pin
(V
DC
)
0 ~ 0.65
0.65 ~ 0.79
0.79 ~ 0.91
0.91 ~ 1.05
1.05 ~ 1.18
1.18 ~ 1.30
1.30 ~ 1.44
1.44 ~ 1.56
1.56 ~ 1.70
1.70 ~ 1.82
1.82 ~ 1.96
1.96 ~ 2.08
2.08 ~ 2.21
2.21 ~ 2.35
2.35 ~ 2.47
2.47 ~ 2.59
2.59 ~ 2.73
2.73 ~ 2.85
2.85 ~ 2.99
2.99 ~ 3.12
3.12 ~ 3.24
3.24 ~ 3.38
3.38 ~ 3.50
3.50 ~ 3.64
3.64 ~ 3.76
3.76 ~ 3.89
3.89 ~ 4.02
4.02 ~ 4.15
4.15 ~ 4.29
4.29 ~ 4.41
4.41 ~ 4.53
4.53 ~ 5.00
Speaker volume
(dB)
-65
-39.5
-37.6
-35.6
-33.5
-31.7
-29.6
-27.7
-25.9
-23.8
-22.1
-20.0
-18.0
-15.9
-13.9
-12.0
-10.0
-7.97
-5.97
-4.00
-2.01
0.01
1.98
3.96
5.97
7.98
9.96
12.0
13.9
15.9
18.0
19.9
Headphone volume
(dB)
-70
-45.4
-43.6
-41.6
-39.5
-37.7
-35.7
-33.7
-32.0
-29.8
-28.1
-26.0
-24.1
-21.9
-20.0
-18.1
-16.0
-14.0
-12.0
-10.0
-8.04
-6.01
-4.05
-2.07
0.05
1.96
3.95
5.95
7.93
9.92
11.9
13.9
Page 5
V.0.2 April 03,2007