Datasheet

VCM

HPLOUT

HPLCOM

HPRCOM

HPROUT

DAC_L2

DAC_R2

PGA_L

DAC_L1

DAC_R1

B0159-01

PGA_R

Volume

Controls,

Mixing

Volume

Controls,

Mixing

Volume

Controls,

Mixing

Volume

Controls,

Mixing

VolumeLevel

0dBto9dB,Mute

VolumeLevel

0dBto9dB,Mute

VolumeLevel

0dBto9dB,Mute

VolumeLevel

0dBto9dB,Mute

TLV320AIC3104

SLAS510C –FEBRUARY 2007–REVISED DECEMBER 2010

www.ti.com

The output stage architecture leading to the high-power output drivers is shown in Figure 32, with the volume

control and mixing blocks being effectively identical to those shown in Figure 31. Note that each of these drivers

has an output level control block like those included with the line output drivers, allowing gain adjustment up to

9 dB on the output signal. As in the previous case, this output level adjustment is not intended to be used as a

standard volume control, but instead is included for additional full-scale output signal-level control.

Two of the output drivers, HPROUT and HPLOUT, include a direct connection path for the stereo DAC outputs to

be passed directly to the output drivers and bypass the analog volume controls and mixing networks, using the

DAC_L2/R2 path. As in the line output case, this functionality provides the highest quality DAC playback

performance with reduced power dissipation, but can only be used if the DAC is not being routed to multiple

output drivers simultaneously, and if mixing of the DAC output with other analog signals is not needed.

Figure 32. Architecture of the Output Stage Leading to the High-Power Output Drivers

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