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AD5422 max. update rate

Question asked by Niels on Jul 22, 2013
Latest reply on Jul 26, 2013 by tjohnson

Hello all,

 

I am wondering about the max. update rate for the AD5422.

In the data sheet, I con find a lot of timings for the SPI-Interface.

24 bits have to be transmitted to the DAC with up to 30MHz, and LATCH has to be low for min. 40ns.

I can't find any other restrictions like "min. Data-to-data time".

24*33ns=792ns

Does this mean that I can update the AD5422 with up to 1.26Msps?

 

By the way, Does anybody know the time between the rising edge of LATCH and the AD5422 Iout current starting to change?

 

I am looking forward to your answers.

 

Regards,

Niels

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