LIS331HH data resolution

[koshy]

Posted on October 11, 2016 at 21:34

The datasheet specifies that it has 16 bit output data, but the data that i get out of the registers are 12 bit ie first 4 bits of High Byte is always 0. Am i doing something wrong here or is the effective resolution only 12 bit ?

#lis331 #lis331hh

[Miroslav BATEK]

Posted on October 12, 2016 at 10:37

You are right, the effective resolution is 12 bits.

The 12 bits resolution cover the measurement range with define the sensitivity (see Table 3 in the datasheet).

For example: FS=+-6g, 2^12=4096 * 3mg/digit (sensitivity) = 12288 = +-6144 mg

Best regards

Miroslav