SLOA313 May 2021 AFE7070 , AFE7071
CF and SBS vary over temperature. The optimized QMC correction values shift over temperature. For best performance, the system should monitor board or ambient temperature and apply a temperature compensation adjustment to the QMC parameters to maintain best performance. Figure 2-9 and Figure 2-10 show the temperature slope of the QMC parameters. As before, the QMC-Phase has the most variation. In general, the parameter slope is linear with respect to temperature. Table 2-1 lists the temperature slopes across the frequency range.
Temperature Slope Parameter | 136 MHz | 155 MHz | 174 MHz |
---|---|---|---|
mT_DCI | –0.11 | –0.09 | –0.10 |
mT_DCQ | 0.07 | 0.06 | 0.06 |
mT_Gain | –0.04 | –0.06 | –0.08 |
mT_Phase | 1.90 | 1.62 | 1.41 |