AIS2120SX datasheet(37/58 Pages) STMICROELECTRONICS

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AIS1120SX / AIS2120SX

Mechanical and electrical specifications

4.2

Electrical characteristics

3.13 V

VDD 3.47 V, -40°C TOP 105°C, acceleration = 0 g, over lifetime, unless

otherwise noted.

Table 33. Electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VDD

Supply voltage

-5%

3.3

+5%

Vreg

-5%

2.8

+5%

ISS

Supply current

Single axis

ISD

Supply current

Dual axis

Offset cancellation(1)

AVG

Averaging period

-5%

1024

+5%

Off_CVU

Offset correction value per

update

-1

LSb

Off_DSPE

Default startup phase enable

time

Time to guarantee the

internal offset is removed

317

334

351(2)

Off_Fast

Fast offset cancellation

-5%

8000

+5%

LSb/s

Off_Slow Slow offset cancellation

0.8

1.2

LSb/s

Self-test

Self-test output change

VDD = 3.30 V, T = 25°C,

Frequency = 0 Hz

1632

LSb

ST_TOL

Self-test tolerance

Across temp, over life time

-15

ST_TON_

TOFF

Self-test turn-on/off time

Specification reached for a

400 Hz 3-pole filter

2ms

Noise

Nois_RMS Output noise

RMS

LSb

Nois_P2P Output noise

peak-to-peak

+16

LSb

Angular acceleration sensitivity(3)

AAS

Angular acceleration sensitivity

5*10-6

g*s2/ rad

SDO pin load(4)

LOAD

Capacitive load drive

Oscillator frequency

Fosc

Oscillator frequency

-5%

16.384

+5%

MHz

Power supply rejection ratio

PSRR

Power supply RR

1*Fsw, 2*Fsw, 3*Fsw,

4*Fsw, 5*Fsw, 6*Fsw

0.5

LSb/mV

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