FXLC95000CL datasheet(21/38 Pages) FREESCALE

21 / 38 page

5.1 Definitions

cross-axis sensitivity

The proportionality constant that relates a variation of accelerometer output to cross

acceleration. This sensitivity varies with the direction of cross acceleration and is

primarily due to misalignment.

deep-sleep mode

The device’s lowest power state, when the system clock is stopped and the device

performs no functions. In this mode, only a few exception events can wake the device.

full range

The maximum level of acceleration supported by the accelerometer's output signal,

typically specified in ±g. For example, the output of an accelerometer program in ±2 g

mode will be linear when subjected to accelerations within ±2 g. If the acceleration is

larger than ±2 g, the output will not be linear and may rail.

hardware compensated

Sensor modules on this device include hardware correction factors for gain and offset

errors which are calibrated during factory test using a least-squares fit of the raw sensor

data.

nonlinearity

A measurement of deviation from perfect sensitivity. Ideally, the relationship between

input and output is linear and described by the sensitivity of the device.

pin group

Device pins are clustered into a number of logical pin groupings in order to simplify and

standardize electrical data sheet parameters. Pin groups are defined in Table 6.

sensitivity

Describes the gain of the sensor and can be determined by applying a 1 g acceleration

to it, such as the earth's gravitational field. The sensitivity of the sensor can be

determined by subtracting the -1 g acceleration value from the +1 g acceleration value

and dividing by two.

software compensated

In addition to the first-order hardware gain and offset calibration features, Freescale

implements advanced, nonlinear calibration functions to improve sensor performance.

warm-up time

The time—from the initial application of power—for a sensor to reach specified

performance under specified operating conditions.

zero-g offset

Describes the deviation of an actual output signal from the ideal output signal, if no

acceleration is present. The expected ideal output signal, in this case, would be zero. A

deviation from ideal value is called zero-g offset. Offset is, to some extent, a result of

stress on the MEMS sensor and, therefore, the offset can slightly change after

mounting the sensor onto a printed circuit board or exposing it to extensive mechanical

stress.

5.2 Absolute maximum ratings

Absolute maximum ratings are stress ratings only and functional operation at the

maximum ratings is not guaranteed. Stress beyond the limits specified here may affect

device reliability or cause permanent damage to the device. For functional operating

conditions, refer to the remaining tables in this section.

Mechanical and Electrical Specifications

Xtrinsic FXLC95000CL Intelligent, Motion-Sensing Platform, Rev1.2, 8/2013.

Freescale Semiconductor, Inc.

FXLC95000CL 데이터시트(PDF) 21 Page - Freescale Semiconductor, Inc

FXLC95000CL 데이터시트(HTML) 21 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38

데이터시트 다운로드

링크 URL