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[Request] Speed Control - LTC1840 - Dual Fan Controller with 2-Wire Interface

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firoz3321

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HI

I am using LTC1840 - Dual Fan Controller with 2-Wire Interface, for one of our projects.
I am able to communicate using I2C , however i am not able to change the FAN speed.

According to datasheet (as per my understanding) i should update the IDAC register with a value between 0 ~ 255 to change speed.

I dont see any voltage difference in the output.

Kindly help me .
 

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