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TPA3004D2PHPR Fiches technique(PDF) 8 Page - Texas Instruments |
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TPA3004D2PHPR Fiches technique(HTML) 8 Page - Texas Instruments |
8 / 43 page TPA3004D2 SLOS407D − FEBRUARY 2003 − REVISED AUGUST 2004 www.ti.com 8 Table 1. DC Volume Control for Class-D Outputs 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 CLASS-D AMPLIFIER % % dB 0 − 4.5 0 − 2.9 −75(1) 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(1) 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(1) (1) Tested in production. Remaining steps are specified by design. |
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