AN2960 datasheet(33/41 Pages) STMICROELECTRONICS

Part #	AN2960

Description	ultra compact linear accelerometer

PDF	41 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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AN2960

Application information

Doc ID 15557 Rev 1

33/41

9.3

Understanding acceleration data

The measured acceleration data are sent to the OUTX, OUTY and OUTZ registers. The

acceleration values are expressed as a 2’s complement number. When the full-scale is set

to 2 g, each LSB corresponds to 18 mg.

The table below provides a few basic examples of the data that is read in the data registers

when the device is subject to a given acceleration. The values listed in the table are given

under the hypothesis of perfect device calibration (i.e. no offset, no gain error, etc.) and

rounded to the closest integer.

Table 5.

Output data register content vs. acceleration

Acceleration values

FS bit = 0

FS bit = 1

Output register content

0 g

00h

350 mg

14h

05h

1 g

38h

0Eh

2 g

6Fh

1Ch

-350 mg

ECh

FBh

-1 g

C8h

F2h

-2 g

91h

E4h

AN2960 Datasheet(PDF) 33 Page - STMicroelectronics