LIS344ALH_0804 STMICROELECTRONICS [STMicroelectronics], LIS344ALH_0804 Datasheet

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LIS344ALH_0804

Manufacturer Part Number
LIS344ALH_0804
Description
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
Features
Description
The LIS344ALH is an ultra compact consumer
low-power three-axis linear accelerometer that
includes a sensing element and an IC interface
able to take the information from the sensing
element and to provide an analog signal to the
external world.
The sensing element, capable of detecting the
acceleration, is manufactured using a dedicated
process developed by ST to produce inertial
sensors and actuators in silicon.
The IC interface is manufactured using an ST
proprietary CMOS process with high level of
integration. The dedicated circuit is trimmed to
better match the sensing element characteristics.
Table 1.
April 2008
high performance 3-axis ±2/±6g ultracompact linear accelerometer
2.4 V to 3.6 V single supply operation
±2 g / ±6 g user selectable full-scale
Low power consumption
Output voltage, offset and sensitivity are
ratiometric to the supply voltage
Factory trimmed device sensitivity and offset
Embedded self test
RoHS/ECOPACK
High shock survivability ( 10000 g )
LIS344ALHTR
Order codes
LIS344ALH
Device summary
®
compliant
Temp range [° C]
-40 to +85
-40 to +85
Rev 3
The LIS344ALH has a dynamically user
selectable full-scale of ±2 g / ±6 g and it is
capable of measuring accelerations over a
maximum bandwidth of 1.8 kHz for all axes. The
device bandwidth may be reduced by using
external capacitances. The self-test capability
allows the user to check the functioning of the
system.
The LIS344ALH is available in Land Grid Array
package (LGA) manufactured by ST.
It is guaranteed to operate over an extended
temperature range of -40 °C to +85 °C.
The LIS344ALH belongs to a family of products
suitable for a variety of applications:
– Mobile terminals
– Gaming and virtual reality input devices
– Antitheft systems and inertial navigation
– Appliance and robotics.
Package
LGA-16L
LGA-16L
LGA 16L (4x4x1.5 mm)
MEMS inertial sensor
LIS344ALH
Tape and reel
Packaging
Tray
www.st.com
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LIS344ALH_0804 Summary of contents

Page 1

Features ■ 2 3.6 V single supply operation ■ ± ±6 g user selectable full-scale ■ Low power consumption ■ Output voltage, offset and sensitivity are ratiometric to the ...

Page 2

Content Content 1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Block ...

Page 3

LIS344ALH List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 4

List of tables List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 5

LIS344ALH 1 Block diagram and pin description 1.1 Block diagram Figure 1. Block diagram a SELF TEST 1.2 Pin description Figure 2. Pin connection X (TOP VIEW) DIRECTIONS OF THE DETECTABLE ACCELERATIONS X+ CHARGE Y+ AMPLIFIER Z+ MUX DEMUX Z- ...

Page 6

Block diagram and pin description Table 2. Pin description Pin # Pin name 6/19 FS Full scale selection (logic 0: ±2g full-scale; logic 1: ...

Page 7

LIS344ALH 2 Mechanical and electrical specifications 2.1 Mechanical characteristics Table 3. Mechanical characteristics @ Vdd =3 °C unless otherwise noted Symbol Parameter (3) Ar Acceleration range (4) So Sensitivity Sensitivity change Vs SoDr Temperature (4) Voff ...

Page 8

Mechanical and electrical specifications 2.2 Electrical characteristics Table 4. Electrical characteristics @ Vdd =3 °C unless otherwise noted Symbol Parameter Vdd Supply voltage Idd Supply current Vfs Full-scale input Vst Self-test input Vpd Power-down input Output ...

Page 9

LIS344ALH 2.3 Absolute maximum ratings Stresses above those listed as “Absolute maximum ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device under these conditions is not implied. Exposure to ...

Page 10

Mechanical and electrical specifications 2.4 Terminology Sensitivity describes the gain of the sensor and can be determined by applying 1g acceleration to it. As the sensor can measure DC accelerations this can be done easily by pointing the axis of ...

Page 11

LIS344ALH 3 Functionality The LIS344ALH is an ultra compact low-power, analog output three-axis linear accelerometer packaged in a LGA package. The complete device includes a sensing element and an IC interface able to take the information from the sensing element ...

Page 12

Application hints 4 Application hints Figure 3. LIS344ALH electrical connection LIS344ALH (top view Digital signals Power supply decoupling capacitors (100 nF ceramic or polyester + 10 should be placed as near as ...

Page 13

LIS344ALH Table 6. Filter capacitor selection, C Cut-off frequency 4.1 Soldering information The LGA package is compliant with the ECOPACK, RoHS and “Green” standard qualified for soldering heat resistance according to JEDEC J-STD-020C. Leave “Pin 1 Indicator” unconnected ...

Page 14

Typical performance characteristics 5 Typical performance characteristics 5.1 Mechanical characteristics at 25 °C Figure 5. X axis Zero-g level at 3 1.6 1.61 1.62 1.63 1.64 1.65 Zero−g Level Offset [V] Figure ...

Page 15

LIS344ALH 5.2 Mechanical characteristics derived from measurement in the -40 °C to +85 °C temperature range Figure 11. X axis Zero-g level change vs. temperature at 3 −4 −3 −2 ...

Page 16

Typical performance characteristics 5.3 Electrical characteristics at 25 °C Figure 17. Current consumption in normal mode at 3 450 500 550 600 650 Current consumption [uA] Figure 19. Noise density at 3.3 ...

Page 17

LIS344ALH 6 Package information In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a lead-free second level interconnect. The category of second level Interconnect is marked on the inner box label, in compliance ...

Page 18

Revision history 7 Revision history Table 7. Document revision history Date 15-Jan-2008 18-Feb-2008 29-Apr-2008 18/19 Revision 1 Initial release. 2 Minor text changes Updated Section 2: Mechanical and electrical specifications 3 added distribution graphs in characteristics LIS344ALH Changes and Section ...

Page 19

LIS344ALH Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at ...

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