Output is not changing when configure with SPI.

Question

Hello, 
 
 We are working with AD5545, 16 bit DAC. We have made the proper connection. The AD5545 is configure with SPI with any controller. However the output is not changing by changing the input. Please resolve the issue.

dendalisay · Accepted Answer

Hi Scientific , 
 To help resolve your issue, please provide a schematic, scopeshots of SPI signals, and your SPI configuration details (clock speed, mode, etc.). 
 Br, 
 Den)

Scientific · Answer

The SPI data frame is provided below

The SPI configuration is 500KHz is clock and 8-bit data transfer, SPI master mode.

dendalisay · Answer

Hi Scientific , 
 Kindly try changing SPI modes because as per checking with the attached shots I can see that there's seem to be a data setup and hold time violations (SDI on the 18th bit is on the same edge as the clock) 
 Br, 
 Den

Scientific · Answer

hi, i am getting the output range from -1.6 to -3.3 for 3.3 voltage reference. for all input range from 0 to 65535.

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Output is not changing when configure with SPI.

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