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AD5324

Question asked by BenjaminHo on Feb 29, 2012
Latest reply on Apr 20, 2012 by Padraic

I using AD5324 for Voltage out control, but I face the problem when the MCU’s SPI interface between the AD5324 & PLL (from RF board) together, the AD5324 will “hang” which suspect the noise from RF cause the AD5324 “hang”. During this situation, MCU write any data into the AD5324 it will not respond. If disconnect the SPI interface between the RF & reset AD5324 then it functional well.

So I would like to know,

  1. Can the noise cause AD5324 “hang”? which internal block possible "hang"? input register? DAc register or String DAC?

(already add filter cap on power)

  1. Any software reset beside on/off the AD5324 to reset it?

 

Remarks : customer not using external reference, they short supply(3.3V) & reference together.

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