AC-SMA-XXD based MEMS accelerometers

Model code

AC-SMA-02D

AC-SMA-05D

AC-SMA-10D

AC-SMA-15D

AC-SMA-20D

AC-SMA-30D

AC-SMA-50D

Unit

Axial

X

X

X

X

X

X

X

(parallel to the device surface)

Range

±2

±5

±10

±15

±20

±30

±50

g

Bandwidth (adjustable)

>120

>120

>120

>120

>120

>120

>120

Hz

Zero-bias stability (1s, 1σ)

<20

<20

<50

<50

<50

<100

<200

μg

Monthly repeatability

<100

<100

<300

<300

<300

<300

<300

μg

Zero-bias temperature coefficient

<10

<10

<30

<30

<30

<50

<100

μg/℃

Zero-bias temperature hysteresis

2

2

3

3

3

4

4

mg

Scale nonlinearity

1000

1000

2000

2000

2000

3000

3000

ppm

Monthly repeatability

<100

<100

<100

<100

<100

<100

<100

ppm

Scaling temperature coefficient

<5

<5

<5

<10

<10

<10

<10

ppm/℃

Scale factor

3750000±37500

1500000±15000

700000±7000

500000±5000

350000±3500

250000±2500

150000±1500

LSB/g

Startup time

<1

<1

<1

<1

<1

<1

<1

s

Sampling frequency

25K

25K

25K

25K

25K

25K

25K

Hz

Impact

The overload-resistant model has passed the 27000g overload test by users

g

Vibration rectification error (6grms)

/

/

<0.15

<0.15

<0.15

<0.15

<0.15

mg/grms

Operating Temperature

-55～125

-55～125

-55～125

-55～125

-55～125

-55～125

-55～125

℃

Power supply voltage

5.0±0.2

5.0±0.2

5.0±0.2

5.0±0.2

5.0±0.2

5.0±0.2

5.0±0.2

V

Current (typical value)

11

11

11

11

11

11

11

mA

Communication interface

SPI

SPI

SPI

SPI

SPI

SPI

SPI

Output format

Analog/Digital

Analog/Digital

Analog/Digital

Analog/Digital

Analog/Digital

Analog/Digital

Analog/Digital

Notes:

1. Long-term repeatability: Accelerometers with a range of 32 ± 50g have undergone long-term repeatability testing, and test data spanning 1.5 years is available. The proportion of accelerometers with zero-bias repeatability < 0.2mg is 31%, the proportion with zero-bias repeatability < 0.5mg is 75%, the proportion with zero-bias repeatability < 1.2mg is 100%, the proportion of accelerometers with scale factor repeatability < 100ppm is 93.7%, and the proportion with scale factor repeatability < 200ppm is 100%.
2. The smaller the measurement range, the higher the accuracy. For example, products with a ±2g measurement range have the best zero-bias stability indicator of 3μg, and also exhibit better long-term repeatability.