Texas Instruments TPA3003D2 - Manual (Page 7)

TPA3003D2
SLOS406A − FEBRUARY 2003 − REVISED MARCH 2003
7
www.ti.com
Table 1. DC Volume Control
VOLTAGE ON THE
VOLUME PIN AS A
PERCENTAGE OF
VREF (INCREASING
VOLUME OR FIXED
GAIN)
VOLTAGE ON THE
VOLUME PIN AS A
PERCENTAGE OF
VREF (DECREASING
VOLUME)
GAIN OF AMPLIFIER
% % dB
0 − 4.5 0 − 2.9 −75†
4.5 − 6.7 2.9 − 5.1 −40.0
6.7 − 8.91 5.1 − 7.2 −37.5
8.9 − 11.1 7.2 − 9.4 −35.0
11.1 − 13.3 9.4 − 11.6 −32.4
13.3 − 15.5 11.6 − 13.8 −29.9
15.5 − 17.7 13.8 − 16.0 −27.4
17.7 − 19.9 16.0 − 18.2 −24.8
19.9 − 22.1 18.2 − 20.4 −22.3
22.1 − 24.3 20.4 − 22.6 −19.8
24.3 − 26.5 22.6 − 24.8 −17.2
26.5 − 28.7 24.8 − 27.0 −14.7
28.7 − 30.9 27.0 − 29.1 −12.2
30.9 − 33.1 29.1 − 31.3 −9.6
33.1 − 35.3 31.3 − 33.5 −7.1
35.3 − 37.5 33.5 − 35.7 −4.6
37.5 − 39.7 35.7 − 37.9 −2.0
39.7 − 41.9 37.9 − 40.1 0.5†
41.9 − 44.1 40.1 − 42.3 3.1
44.1 − 46.4 42.3 − 44.5 5.6
46.4 − 48.6 44.5 − 46.7 8.1
48.6 − 50.8 46.7 − 48.9 10.7
50.8 − 53.0 48.9 − 51.0 13.2
53.0 − 55.2 51.0 − 53.2 15.7
55.2 − 57.4 53.2 − 55.4 18.3
57.4 − 59.6 55.4 − 57.6 20.8
59.6 − 61.8 57.6 − 59.8 23.3
61.8 − 64.0 59.8 − 62.0 25.9
64.0 − 66.2 62.0 − 64.2 28.4
66.2 − 68.4 64.2 − 66.4 30.9
68.4 − 70.6 66.4 − 68.6 33.5
> 70.6 >68.6 36.0†
† Tested in production. Remaining steps are specified by design.