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LMX2820: Instant Calibration

Part Number:LMX2820

1.

Write R0 with FCAL_EN = 1,then Write R0 with FCAL_EN = 0

There needs to be a delay between the two?

2.only Write R0 with FCAL_EN = 1?

   only Write R0 with FCAL_EN = 0?

  Write R0 with FCAL_EN = 1 ,then Write R0 with FCAL_EN = 0?

Kailyn Chen:

xie xiangsheng 说:There needs to be a delay between the two?

Re-program register R0 with FCAL_EN = 1 to ensure that this happens with the LDOs at their proper bias leve

xie xiangsheng 说:

only Write R0 with FCAL_EN = 1?

   only Write R0 with FCAL_EN = 0?

  Write R0 with FCAL_EN = 1 ,then Write R0 with FCAL_EN = 0?

It should be write R0 with FCAL_EN = 0 and  DBLR_CAL_EN = 0

 FCAL_EN  and  DBLR_CAL_EN are the R0 register bit 4 and bit6. This step means that configure R0 register bit 4 and bit6 are both 0.

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