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|4th July 2012, 08:23 AM||#1|
Join Date: Oct 2004
HELP differntial audio
Im building a project, that uses Bluegiga's WT32 (bluetooth audio)
and it provides 2vp-p differential audio outputs...
Id like to use a TI DRV632, looking at the eval, and the data sheet
i see a bunch of filter components... i dont think i need any of that(cause it says its filtered)
i just need to get the differential audio to single ended to be able to plug into PC audio LINE in...
so, what would be the minimum components for the DRV632's imput... im assuming dc decoupling caps, and some resistors to set the gain on the input
im not a analog guy, so i need some help here
for reference: Line Driver / Receiver - 2V/3Vrms Line Driver - DRV632 - TI.com
from WT32 datasheet:
The output circuit is comprised of a digital to analogue converter with gain setting and an
output amplifier. Its class AB output stage is capable of driving a signal on both channels
of up to 2V pk-pk differential into a load of 16Ω. The output is available as a differential
signal between AUDIO_OUT_N_LEFT and AUDIO_OUT_P_LEFT for the left channel, as
Figure 20 shows; and between AUDIO_OUT_N_RIGHT and AUDIO_OUT_P_RIGHT for the
The multi-bit bit stream from the digital circuitry is low pass filtered by a third order filter
with a pole at 20kHz. The signal is then amplified in the fully differential output stage,
which has a gain bandwidth of typically 1MHz.
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