2

Mechanical and electrical specifications

2.1

Mechanical characteristics

@ Vdd = 1.8 V, temperature from -40 °C to +125 °C unless otherwise noted.

The product is factory calibrated at 1.8 V. The operational power supply range is from 1.71 V to 2.1 V.

Symbol

Parameter

Test conditions

Min. Typ.(1) Max.

Unit

FS

Measurement range

3.85

g

7.7

So

Nominal sensitivity(2)

@ FS ±3.85 g @ 25 °C

0.122

mg/LSB

@ FS ±3.85 g @ 25 °C

-11.71

dBFS/g

@ FS ±7.7 g @ 25 °C

0.244

mg/LSB

@ FS ±7.7 g @ 25 °C

-17.73

dBFS/g

So %

Sensitivity tolerance(2)

@ T = 25 °C

-9

+9

%

Sensitivity tolerance - long term

Long term includes post solder, drift in temperature in the

range [-40°C to +125 °C] and over life

-15

+15

TCSo

Sensitivity change vs.

temperature(3)

From -40 to +125 °C, delta from 25 °C

±0.015

%/°C

TyOff

Zero-g level offset accuracy(2)

@ T = 25 °C

-180

+180

mg

Off

Zero-g level offset accuracy - long

term

Long term includes post solder, drift in temperature in the

range [-40°C to +125 °C] and over life

-800

+800

mg

TCOff

Zero-g level change vs.

temperature(3)

From -40 to +125 °C, delta from 25 °C

4

mg/°C

An

Acceleration electrical noise

BW = 2.4 kHz @ T = 25 °C

X, Y-axis

1.6

mg rms

BW = 2.4 kHz @ T = 25 °C

Z-axis

2.4

An_tot

Acceleration noise density(4)

@ T = 25 °C

X, Y-axis

30

μg/√Hz

@ T = 25 °C

Z-axis

50

μg/√Hz

BW

Signal bandwidth

@ T = 25 °C

2200

2400

Hz

LAT

Latency(5)

Including the full chain @ 2 kHz; TDM @ 16 kHz

@ T = 25 °C

266

μs

NL

Non-linearity(6)

@FS ±7.7 g; -7.4 g < input acceleration [g] < +7.4 g

@ T = 25 °C

-0.5

+0.5

%FS

Cx

Cross-axis sensitivity(6)

@ FS ±3.85 g, @ 25 °C

±1

%

RFm

Mechanical resonant frequency of

the MEMS element(5)

X-axis, @ T = 25 °C

5150

Hz

Y-axis, @ T = 25 °C

5150

Hz

Z-axis, @ T = 25 °C

4950

Hz

ST

Self-test deviation(7)

X-axis, from -40 to +125 °C

300

1000

mg

Y-axis, from -40 to +125 °C

300

1000

mg

Z-axis, from -40 to +125 °C

500

2700

mg

1. Typical specifications are not guaranteed.

AIS25BA

Mechanical and electrical specifications

DS14019 - Rev 1

page 3/31