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LSM9DS1 input-high voltage for CS inputs?

Question asked by Bill Burgess on Apr 5, 2017
Latest reply on Apr 6, 2017 by Bill Burgess

Although powering an LSM9DS1 with 2.8V to VDDIO and VDD, I would like to use a 1.8V-logic line for one of the chip selects for ease of retrofitting an existing design with minimum upheaval.  The line is push-pull, not open collector.

 

The sufficient-voltage threshold for a "1" digital input is usually labeled V_IH, but I could not find that parameter listed in the published specifications.  What is V_IH for the LSM9DS1 digital inputs, especially the chip selects?

 

A corollary question -- even if 1.8V will be sufficient fully to deselect the chip-select, would using 1.8 instead of 2.8V lead to increased power consumption?

 

Thanks!

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