What difference can be observed in RF performance when connecting the GND pin of TCXO to Pin 18 (GNDX) of Si446x or connecting it to the common GND?

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What difference can be observed in RF performance when connecting the GND pin of tcxo to pin 18 (GNDX) of Si446x or connecting it to the common GND?
创建于2020-04-24

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In case of using tcxo, a few dB lower (2-3 dB) reference spurs (fxtal away on both sides of the carrier) can be observed when connecting the GND pin of TCXO to pin 18 (GNDX). Connecting to either GNDX or to the common GND has no effect on any other RF parameters.

Published：2020-04-24

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