Evaluation Module User's Guide

4.13 Class-D Output Tab
TLV320AIC3107EVM Software www.ti.com
Figure 29. Class-D Output Tab
The integrated Class-D speaker amplifier can drive one watt into an 8- Ω load. Figure 29 shows the
controls for the Class-D amplifier. The input to the Class-D amplifier is the same signal available at the left
lineout LEFT_LOP pin. The Class-D amplifier must be enabled first and then the gain control (0 dB to +18
dB) can be used. Note that many other gains are available in the signal path leading up to the Class-D
amplifier.
Also available is the an analog bypass switch to allow a signal up to 3.3 V to be input at SWINP and
SWINM and output at SWOUTP and SWOUTM. When the bypass switch is enabled (Register 76, D1), it
is also recommended to enable the Bypass Switch Bootstrap Clock (Register 76, D0).
TLV320AIC3107EVM-K 30 SLAU261 – November 2008
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