ST LIS352AR User Manual

3-axis ±2 g analog-output "piccolo" accelerometer

Features

■ Single voltage supply operation

■ ±2 g full-scale

■ 3 acceleration channels plus multiplexed

analog output

■ Ratiometric output voltage

■ Power-down mode

■ Embedded self-test

■ 10000 g high shock survivability

■ ECOPACK

(see Section 7)

Applications

■ Free-fall detection for data protection

■ Tilting applications

■ Gaming and virtual reality input devices

■ Antitheft systems and inertial navigation

®

RoHS and “Green” compliant

LIS352AR

MEMS motion sensor:

LGA-14

capacitors. The self-test capability allows the user
to check the functioning of the sensor in the final
application.

The device has three analog acceleration outputs,
plus an embedded multiplexer that allows for
redirection of the analog outputs onto a single pin
for operation with a single-channel A/D converter.

ST is already in the field with several hundred
million sensors which have received excellent
acceptance from the market in terms of quality,
reliability and performance

(3x5x0.9mm)

Description

The LIS352AR is a miniaturized low-power 3-axis
linear accelerometer belonging to the “piccolo”
family of ST motion sensors. It includes a sensing
element and an IC interface to provide an analog
signal to the external world.

The LIS352AR is provided in a plastic land grid
array (LGA) package.

Several years ago ST successfully pioneered the
usage of this package for accelerometers. Today,
ST has the widest manufacturing capability and
strongest expertise in the world for production of
sensors in plastic LGA packages.

The sensing element, capable of detecting the
acceleration, is manufactured using a dedicated
process developed by ST to produce motion
sensors and actuators in silicon.

The IC interface is manufactured using a CMOS
process that allows the design of a dedicated
circuit which is trimmed to better match the
sensing element characteristics.

Table 1. Device summary

Order code

LIS352AR -40 to +85 LGA-14 Tray

LIS352ARTR -40 to +85 LGA-14 Tape and reel

Temp.

range [°C]

Package Packing

The LIS352AR has a full-scale of ±2 g and is
capable of measuring accelerations over a
maximum bandwidth of 2.0 kHz. The device
bandwidth may be reduced by using external

February 2010 Doc ID 16933 Rev 1 1/15

www.st.com

15

Contents LIS352AR

Contents

1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 Pin connections and description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.1 Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.2 Zero-g level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.3 Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.4 Output impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5 Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.1 Sensing element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.2 IC interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.3 Factory calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

6 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.1 Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6.2 Output response vs. orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2/15 Doc ID 16933 Rev 1

LIS352AR Block diagram and pin description

1 Block diagram and pin description

Figure 1. Block diagram

a

SELF-TEST

X+

Y+
Z+

MUX

Z­Y­X-

REFERENCE

CHARGE

AMPLIFIER

TRIMMING CIRCUIT

DEMUX

Routx

S/H

Routy

S/H

Routz

S/H

CLOCK

Aux_in

Voutx

Vouty

Voutz

Vout

MUX

S1 S0

AM06049v1

1.1 Pin connections and description

Figure 2. Pin connection

Z

X

Y

(TOP VIEW)

DIRECTIONS OF

DETECTABLE

ACCELERATIONS

1

Vdd

Aux_in

Vout

GND

Voutz

Vouty

Reserved

13

8

1

6

Voutx

(BOTTOM VIEW)

NC

Reserved

S0

S1

ST

PD

AM06050v1

Doc ID 16933 Rev 1 3/15

Block diagram and pin description LIS352AR

Table 2. Pin description

Pin # Pin name Function

1 NC Internally not connected

2 Reserved Connect to Vdd

3 S0 Mux selector 0 (connect to Vdd or to GND)

4 S1 Mux selector 1 (connect to Vdd or to GND)

5 ST Self-test (logic 0: normal mode; logic 1: self-test)

6 PD Power-down (logic 0: normal mode; logic 1: power-down mode)

7 Voutx Output voltage X channel

8 Vouty Output voltage Y channel

9 Voutz Output voltage Z channel

10 GND 0 V supply

11 Vout Multiplexer output

12 Aux_In Auxiliary input

13 Vdd Power supply

14 Reserved Connect to Vdd

4/15 Doc ID 16933 Rev 1

LIS352AR Mechanical and electrical specifications

2 Mechanical and electrical specifications

2.1 Mechanical characteristics

@ Vdd=3.3 V, T=25 °C unless otherwise noted

Table 3. Mechanical characteristics

Symbol Parameter Test condition Min. Typ.

Ar Acceleration range

(2)

(a)

.

(1)

±2 g

Max. Unit

So Sensitivity

SoDr

Sensitivity change vs.
temperature

Voff Zero-g level

OffDr

Zero-g level change
Vs temperature

NL Non linearity

CrossAx Cross-axis

Acceleration noise

An

density

Self-test output

Vt

voltage change

Fres

Sensing element
resonant frequency

(3)

(5)

(4)

(4)

(6),(7)

0.145*Vdd
–5%

0.145*Vdd

0.145*Vdd
+ 5%

Delta from +25 °C ±0.01 %/°C

T = 25 °C Vdd/2-6% Vdd/2 Vdd/2+6% V

Delta from +25 °C ±0.3 mg/°C

Best fit straight line ±0.5 % FS

±2 %

Vdd=3.3 V 100 µg/

T = 25 °C
Vdd=3.3 V

60 900 mV

X axis

T = 25 °C
Vdd=3.3 V

60 900 mV

Y axis

T = 25 °C
Vdd=3.3 V

60 900 mV

Z axis

All axes 2.0 kHz

(8)

V/g

Hz

Top

Operating
temperature range

Wh Product weight 30 mgram

1. Typical specifications are not guaranteed

2. Guaranteed by wafer level test and measurement of initial offset and sensitivity

3. Zero-g level and sensitivity are ratiometric to supply voltage

4. Guaranteed by design

a. The product is factory calibrated at 3.3 V. The operational power supply range is specified in Table 4. Since the

device is ratiometric, Voff, So and Vt parameters will vary with supply voltage.

Doc ID 16933 Rev 1 5/15

-40 +85 °C