On Thu, Jul 26, 2012 at 4:37 PM, Alexander Chemeris alexander.chemeris@gmail.com wrote:
On Thu, Jul 26, 2012 at 3:31 PM, Srdjan Milenkovic s.milenkovic@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