CMA3000-D01

VTI Technologies Oy

PRELIMINARY - Subject to changes

2/4

www.vti.fi

Doc. Nr. 8277800.14

Rev. 14

Performance Characteristics

1)

Typical supply range

1.7 – 2.7 V

Extended supply range

2.7 – 3.6 V

Units

Parameter

Condition

Min

Typ

2)

Max

Min

Typ

2)

Max

Vdd

1.7

2.5

2.7

-

3.3

-

V

Digital I/O Vdd

Vdd ≥ Digital I/O Vdd

1.7

1.8 / 2.5

2.7

-

3.3

-

V

Operating temperature **

-40

-

85

-40

-

85

°C

Current consumption *

ODR=400 Hz

ODR=100 Hz

ODR=40 Hz

ODR=10 Hz

Power down

-

-

-

-

-

70

50

11

7

4

90

-

-

-

9

-

-

-

-

-

70

50

14

9

3

-

-

-

-

-

µA

Acceleration range *

G_RANGE bit 0

G_RANGE bit 1

-8

-2

-

-

8

2

-

-

±8

±2

-

G

Offset calibration error *

3)

G_RANGE bit 1

-100

±25

+100

-

±100

-

mg

Offset temperature error **

4)

-40 ... +85 °C

X and Z axis

Y axis

±1

±2.5

-

-

±1

±2.5

-

-

mg/°C

Sensitivity *

5)

Full scale = 2 g

Full scale = 8 g

-

-

56

14

-

-

-

-

56

14

-

-

Count/g

Sensitivity calibration error *

-10

-

+10

-

±10

-

%

Sensitivity temperature error

**

6)

-40 ... +85 °C

-

±0.02

-

±0.02

-

%/°C

Non-Linearity **

7)

-

1.5

3

-

1.5

-

% FS

Cross-Axis sensitivity **

8)

G_RANGE bit 1

-

1

-

-

1

-

%

Output Data Rate, ODR **

MODE bits x10

MODE bits x01

MODE bits 011

MODE bits 100

400

100

40

10

-

400

100

40

10

-

Hz

Bandwidth**

9)

ODR/5

ODR/5

-

Hz

Noise **

10)

Full scale=2 g,

ODR=100 Hz

Full scale=8 g,

ODR=400 Hz

-

-

13

25

-

-

13

25

-

-

mg

RMS

Turn on time **

11)

ODR=400 Hz

ODR≤100 Hz

-

-

0.01

2.5/ODR

-

-

0.01

2.5/ODR

-

-

s

I

-

-

400

-

-

400

kHz

SPI clock rate **

500

500

kHz

*

100% tested in production

**

Qualified during product validation

1)

The product is factory calibrated at 2.5 V in room temperature.

2)

Typical values are not guaranteed.

3)

Z-axis +1g position. Soldering process can cause offset shift which is typically less than 150 mg. Please see

TN68_CMA3000_Assembly_Instructions for further details.

4)

Offset temperature error = {Count(0g)-Offset} / Sensitivity [ g ]. Sensitivity = Calibrated sensitivity.

Offset= Calibrated offset.

5)

Sensitivity = {Count(+1g) - Count(-1g)}/2 [Count/g].

6)

Sensitivity temperature error = {[Count(+1g)-Count(-1g)]/2 - Sensitivity} / Sensitivity x 100% [%].

Sensitivity = Calibrated sensitivity.

7)

Best fit straight line.

8)

The cross-axis sensitivity determines how much acceleration, perpendicular to the measuring axis,

couples to the output. The total cross-axis sensitivity is the geometric sum of the sensitivities of

the two axes which are perpendicular to the measuring axis. The angular alignment error

between X, Y and Z axis is included into the cross axis sensitivity.

9)

Frequency responses with 1

10)

Average noise/axis over the measurement bandwidth defined as

)

2

2

2

(

3

1

z

n

y

n

x

n

+

+

, where nx, ny and nz are

the measured signal's standard deviation due to noise in x, y and z directions.

11)

Settling error less than 1% of FS.