Datasheet


SLAS412− DECEMBER 2003
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25
−10
−12
−16
−20
0 100 200 300 400 500 600
Gain − dB
−6
−4
f − Frequency − Hz
0
700 800 900 1 k
−18
−14
−8
−2
Figure 19. Uncompensated Response For 16- Load and 50-F Decoupling Capacitor
−10
−15
−20
0 100 200 300 400 500 600
Gain − dB
−5
0
f − Frequency − Hz
700 800 900 1 k
Figure 20. Frequency Response For 16- Load and 50-F Decoupling Capacitor After Gain
Compensation Using a Suggested Set of Coefficients for Audio Effects Filter
Using the capless output configuration eliminates the need for these capacitors and removes the accompanying high-pass
filter entirely. However, this configuration does have one drawback – if the RETURN terminal of the headphone jack (which
is wired to the ’AIC26 VGND pin) is ever connected to a ground, that is shorted to the ’AIC26 ground pin, then the VGND
amplifier enters short-circuit protection, and the audio output does not function properly.