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4.6

Bypass Paths

TLV320AIC3104EVM Software

Below these controls are the controls for the ADC PGA, including the master volume controls for the ADC

inputs. Each channel of the ADC can be powered up or down as needed using the Powered Up buttons.

PGA soft-stepping for each channel is selected using the pulldown menu control. The two large knobs set

the actual ADC PGA Gain and allow adjustment of the PGA gains from 0 dB to 59.5 dB in 0.5-dB steps

(excluding Mute). At the extreme counterclockwise rotation, the channel is muted. Rotating the knob

clockwise increases the PGA gain, which is displayed in the box directly above the volume control.

Figure 8. Bypass Paths

The Bypass Paths tab shows the active and passive bypass paths available for control.

The passive analog bypass paths allow the inputs to be routed straight through the device to the outputs

without turning on any of the internal circuitry. This provides a signal path through the device with minimal

power consumption.

The active bypass paths allow the inputs to bypass the ADC and DAC functional blocks and be routed to

the analog output mixers to be summed into the output amplifiers.

TLV320AIC3104EVM and TLV320AIC3104EVM-PDK

SLAU218 – August 2007

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5000 Datasheet(PDF) 14 Page - Texas Instruments