Part Number: DAC38J82
Hi all!I try to read junction temperature of DAC38J82 from config7 register. I use ~100kHz SCLK. And I get high temperature value(96 degrees Celsius(0x6000 value of register)) when chip is only powered(DACCLK is missing) and CONFIG26 register has value 0x01BF. I have next SPI timing diagram when I read config7 register:
I touch chip by finger it is a little warm. Where am I wrong?
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Make sure config26 bit 6 is set to "0" to enable the temp sensor. On our setup, I read back a value of "2D" with the part running with a clock. This is a 2's comp number that corresponds to 45 degrees Celsius after converting it to decimal. I am not sure why you are getting such a high value. Can you verify you are able to read and write to other registers with no problems.
In reply to jim s:
Jim, thanks for your reply!I forgot toggle RESETB pin to reset SIF registers. After that temperature values become normal.
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