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ꢀ ꢁꢂ ꢃꢄꢄ ꢅꢆ ꢇ
SLOS407D − FEBRUARY 2003 − REVISED AUGUST 2004
Table 2. DC Volume Control for VAROUT Outputs
(1)
VAROUT_VOLUME (V)
−
VAROUT_VOLUME (V) −
FROM FIGURE 24 − AS A
PERCENTAGE OF VREF
(DECREASING VOLUME)
FROM FIGURE 24 − AS A
PERCENTAGE OF VREF
(INCREASING VOLUME
OR FIXED GAIN)
GAIN OF VAROUT
AMPLIFIER
dB
%
%
(2)
−66
0 − 4.5
0 − 2.9
4.5 − 6.7
2.9 − 5.1
−56.0
−53.5
−50.9
−48.4
−45.9
−43.3
−40.8
−38.3
−35.7
−33.2
−30.7
−28.1
−25.6
−23.1
−20.5
−18.0
−15.5
6.7 − 8.91
8.9 − 11.1
11.1 − 13.3
13.3 − 15.5
15.5 − 17.7
17.7 − 19.9
19.9 − 22.1
22.1 − 24.3
24.3 − 26.5
26.5 − 28.7
28.7 − 30.9
30.9 − 33.1
33.1 − 35.3
35.3 − 37.5
37.5 − 39.7
39.7 − 41.9
41.9 − 44.1
44.1 − 46.4
46.4 − 48.6
48.6 − 50.8
50.8 − 53.0
53.0 − 55.2
55.2 − 57.4
57.4 − 59.6
59.6 − 61.8
61.8 − 64.0
64.0 − 66.2
66.2 − 68.4
68.4 − 70.6
> 70.6
5.1 − 7.2
7.2 − 9.4
9.4 − 11.6
11.6 − 13.8
13.8 − 16.0
16.0 − 18.2
18.2 − 20.4
20.4 − 22.6
22.6 − 24.8
24.8 − 27.0
27.0 − 29.1
29.1 − 31.3
31.3 − 33.5
33.5 − 35.7
35.7 − 37.9
37.9 − 40.1
40.1 − 42.3
42.3 − 44.5
44.5 − 46.7
46.7 − 48.9
48.9 − 51.0
51.0 − 53.2
53.2 − 55.4
55.4 − 57.6
57.6 − 59.8
59.8 − 62.0
62.0 − 64.2
64.2 − 66.4
66.4 − 68.6
>68.6
(2)
−13.0
−10.4
−7.9
−5.3
−2.8
−0.3
2.3
4.8
7.3
9.9
12.4
14.9
17.5
(2)
20.0
(1)
(2)
VAROUT_VOLUME (V) = VOLUME (V) − VARDIFF (V), see pages 25 − 27.
Tested in production. Remaining steps are specified by design.
9
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