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17 page 
TPA3004D2 SLOS407D − FEBRUARY 2003 − REVISED AUGUST 2004 www.ti.com 17 Figure 25 −70 −80 −90 −100 10 100 1 k −60 −50 f − Frequency − Hz COMMON-MODE REJECTION RATIO vs FREQUENCY −40 10 k 100 k VCC = 12 V, RL = 8 Ω, C2p5 = 1 µF, Class-D Figure 26 80 40 20 0 −50 −30 −10 100 140 Gain − dB INPUT RESISTANCE vs GAIN 160 10 30 60 120 VAROUT Figure 27 −200 0 −180 −160 −140 −120 −100 −80 −60 −40 −20 20 100 1 k 10 k f − Frequency − Hz NOISE vs FREQUENCY VCC = 12 V, Gain= +20 dB, RL = 8 Ω Inputs AC Coupled to GND, VAROUT, No Filter Figure 28 −175 175 −150 −125 −100 −75 −50 −25 0 25 50 75 100 125 150 −22.493 9.318 −18.958 −15.424 −11.889 −8.354 −4.82 −1.285 2.249 5.784 10 100 1 k 10 k 12.853 Gain Phase f − Frequency − Hz CLOSED LOOP RESPONSE VCC = 12 V, Gain= +7.9 dB, RL = 8 Ω VAROUT |
