DC Offset vs temperature

Alexander Chemeris alexander.chemeris at gmail.com
Thu Jul 26 15:48:22 UTC 2012


On Thu, Jul 26, 2012 at 4:37 PM, Alexander Chemeris
<alexander.chemeris at gmail.com> wrote:
>
> On Thu, Jul 26, 2012 at 3:31 PM, Srdjan Milenkovic
> <s.milenkovic at limemicro.com> wrote:
> > Combining Thomas's idea of DC recalibration and, if necessary, making
> > look
> > up table for IQ phase error correction vs temperature should put us in
> > good
> > position to meet the specs.
>
> Well, AFAIK, LMS6002D doesn't have a temperature sensor built in and
> this means we have to install an external one, which again increase
> BoM cost. Is that's how this issue is solved by your other customers?
> I wonder is there a way to solve this without introducing a
> temperature compensation loop.

Let me clarify - DC offset re-calibration is (more or less) fine in
lab setup, but it's expensive to manufacture if we have to add
temperature sensors and put every unit into a temperature camera for
calibration.

--
Regards,
Alexander Chemeris.
CEO, Fairwaves LLC / ООО УмРадио
http://fairwaves.ru




More information about the UmTRX mailing list