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AD5420 problem

Question asked by beirao on Nov 7, 2012
Latest reply on Nov 7, 2012 by beirao

Hi,

 

I am using a AD5420 how in image

AD5420.png

, but the output is always constant. In code, I send the next words:

LATCH = 0;

delay of 100ns

01010101 -adress byte (control register)

00010000 - control register

00000101 - define mode 4 to 20mA

delay of 100ns

LATCH = 1;

 

ever 1second:

 

LATCH = 0;

delay of 100ns

00000001 - adress byte (date register)

10000000

00000000

delay of 100ns

LATCH = 1;

 

 

So, my Iout should be 12mA. I have a resistor of 470 Ohm and Vout is 92mV.

 

Can help me, please?

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