# MEMS Accelerometer, Analogue, X, Y, Z, ± 2g, ± 6g, 2.4 V, 3.6 V, LGA
**URL**: https://novapart.co/products/LIS344ALHTR/mems-accelerometer-analogue-x-y-z-2g-6g-24-v-36
**SKU**: LIS344ALHTR
**Manufacturer**: STMICROELECTRONICS
**Category**: Semiconductors - ICs || IC Sensors || MEMS Accelerometers
**Price**: €5.3200
**Stock**: 1000+
**Lead Time**: 2 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| No. Of Pins | 16Pins |
| Sensitivity Max | 242mV/g, 693mV/g |
| Sensitivity Min | 198mV/g, 627mV/g |
| Sensitivity Typ | 220mV/g, 660mV/g |
| Measurement Axis | X, Y, Z |
| Sensor Case Style | LGA |
| Acceleration Range | ± 2g, ± 6g |
| Mems Sensor Output | Analogue |
| Supply Voltage Max | 3.6V |
| Supply Voltage Min | 2.4V |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3129601/)
**LIS344ALH**
MEMS inertial sensor
high performance 3-axis ±2/±6g ultracompact linear accelerometer
**==> picture [61 x 39] intentionally omitted <==**
## **Features**
- 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
**==> picture [55 x 47] intentionally omitted <==**
**LGA 16L (4x4x1.5 mm)**
- Embedded self test
- RoHS/ECOPACK[®] compliant
- High shock survivability ( 10000 g )
## **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.
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.
**Table 1. Device summary**
|**Order codes**|**Temp range [**°**C]**|**Package**|**Packaging**|
|---|---|---|---|
|LIS344ALH|-40 to +85|LGA-16L|Tray|
|LIS344ALHTR|-40 to +85|LGA-16L|Tape and reel|
1/19
April 2008
Rev 3
_www.st.com_
**Content**
**LIS344ALH**
|**Content**|**Content**||
|---|---|---|
|**1**|**Block**|**diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5**|
||1.1|Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5|
||1.2|Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5|
|**2**|**Mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 7**||
||2.1|Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7|
||2.2|Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8|
||2.3|Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9|
||2.4|Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10|
|**3**|**Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11**||
||3.1|Sensing element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11|
||3.2|IC interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11|
||3.3|Factory calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11|
|**4**|**Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12**||
||4.1|Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13|
||4.2|Output response vs orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13|
|**5**|**Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 14**||
||5.1|Mechanical characteristics at 25 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14|
||5.2|Mechanical characteristics derived from measurement in the -40 °C to +85|
|||°C temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15|
||5.3|Electrical characteristics at 25 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16|
|**6**|**Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17**||
|**7**|**Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18**||
2/19
**LIS344ALH**
**List of figures**
## **List of figures**
|Figure|1.|Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5|
|---|---|---|
|Figure|2.|Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5|
|Figure|3.|LIS344ALH electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12|
|Figure|4.|Output response vs orientation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13|
|Figure|5.|X axis Zero-g level at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14|
|Figure|6.|X axis Sensitivity at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14|
|Figure|7.|Y axis Zero-g level at 3.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14|
|Figure|8.|Y axis Sensitivity at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14|
|Figure|9.|Z axis Zero-g level at 3.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14|
|Figure|10.|Z axis Sensitivity at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14|
|Figure|11.|X axis Zero-g level change vs. temperature at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15|
|Figure|12.|X axis Sensitivity change vs. temperature at 3.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15|
|Figure|13.|Y axis Zero-g level change vs. temperature at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15|
|Figure|14.|Y axis Sensitivity change vs. temperature at 3.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15|
|Figure|15.|Z axis Zero-g level change vs. temperature at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15|
|Figure|16.|Z axis Sensitivity change vs. temperature at 3.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15|
|Figure|17.|Current consumption in normal mode at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16|
|Figure|18.|Current consumption in power-down at 3.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16|
|Figure|19.|Noise density at 3.3 V (X, Y axis) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16|
|Figure|20.|Noise density at 3.3 V (Z axis) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16|
|Figure|21.|LGA 16: mechanical data and package dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17|
3/19
**LIS344ALH**
**List of tables**
## **List of tables**
|Table|1.|Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1|
|---|---|---|
|Table|2.|Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6|
|Table|3.|Mechanical characteristics @ Vdd =3.3 V, T = 25 °C unless otherwise noted. . . . . . . . . . . 7|
|Table|4.|Electrical characteristics @ Vdd =3.3 V, T = 25 °C unless otherwise noted. . . . . . . . . . . . . 8|
|Table|5.|Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9|
|Table|6.|Filter capacitor selection, Cload(x, y, z), . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13|
|Table|7.|Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18|
4/19
**LIS344ALH**
**Block diagram and pin description**
## **1 Block diagram and pin description**
## **1.1 Block diagram**
## **Figure 1. Block diagram**
**==> picture [367 x 170] intentionally omitted <==**
**----- Start of picture text -----**
X+ Routx
VoutX
CHARGE S/H
Y+
AMPLIFIER
Z+
a MUX DE MU X S/H Routy VoutY
Z-
Y-
X- Routz VoutZ
S/H
SELF TEST REFERENCE TRIMMING CIRCUIT CLOCK
**----- End of picture text -----**
## **1.2 Pin description**
## **Figure 2. Pin connection**
**==> picture [308 x 179] intentionally omitted <==**
**----- Start of picture text -----**
Z
13 16
1 VoutX 12 1 FS
NC ST
VoutY NC
Y NC 9 4 Res
X
8 5
(TOP VIEW)
DIRECTIONS OF THE (BOTTOM VIEW)
DETECTABLE
ACCELERATIONS
NC Vdd Res NC
VoutZ GND NC PD
**----- End of picture text -----**
5/19
**LIS344ALH**
**Block diagram and pin description**
**Table 2. Pin description**
|**Pin #**|**Pin name**|**Function**|
|---|---|---|
|1|FS|Full scale selection (logic 0: ±2g full-scale; logic 1: ±6g full-scale)|
|2|ST|Self test (logic 0: normal mode; logic 1: self-test mode)|
|3|NC|Internally not connected|
|4|Res|Leave unconnected or connect to Vdd|
|5|PD|Power down (logic 0: normal mode; logic 1: power-down mode)|
|6|NC|Internally not connected|
|7|GND|0 V supply|
|8|VoutZ|Output voltage Z channel|
|9|NC|Internally not connected|
|10|VoutY|Output voltage Y channel|
|11|NC|Internally not connected|
|12|VoutX|Output voltage X channel|
|13|NC|Internally not connected|
|14|Vdd|Power supply|
|15|Res|Connect to Vdd|
|16|NC|Internally not connected|
6/19
**LIS344ALH**
**Mechanical and electrical specifications**
## **2 Mechanical and electrical specifications**
## **2.1 Mechanical characteristics**
## **Table 3. Mechanical characteristics @ Vdd =3.3 V, T = 25 °C unless otherwise noted[(1)]**
|**Symbol**|**Parameter**|**Test condition**|**Min.**|**Typ.(2)**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|
|Ar|Acceleration range(3)|FS pin connected to
GND|±1.8|± 2||g|
|||FS pin connected to Vdd|±5.4|± 6|||
|So|Sensitivity(4)|Full-scale = ±2 g|Vdd/5 - 5%|Vdd/5|Vdd/5 + 5%|V/g|
|||Full-scale = ±6 g|Vdd/15 - 10%|Vdd/15|Vdd/15 + 10%||
|SoDr|Sensitivity change Vs
Temperature|Delta from +25 °C||± 0.01||%/°C|
|Voff|Zero-g level(4)|Full-scale = ±2 g
T = 25 °C|Vdd/2 - 5%|Vdd/2|Vdd/2 + 5%|V|
|OffDr|Zero-g level change Vs
Temperature|Delta from +25 °C||±0.4||mg/°C|
|NL|Non linearity(5)|Best fit straight line
Full-scale = ±2 g||±0.5||% FS|
|CrossAx|Cross-axis(6)|||±2||%|
|An|Acceleration noise
density|Vdd = 3.3 V;
Full-scale = ±2 g||50||µg/
Hz|
|Vt|Self test output voltage
change(7),(8),(9)|X axis
T = 25 °C; Vdd=3.3 V|80|140|200|mV|
|||Y axis
T = 25 °C; Vdd=3.3 V|-200|-140|-80|mV|
|||Z axis
T = 25 °C; Vdd=3.3 V|100|230|350|mV|
|Fres|Sensing element
resonant frequency(10)|X,Y,Z axis|1.8|||KHz|
|Top|Operating temperature
range||-40||+85|°C|
|Wh|Product weight|||0.040||gram|
1. The product is factory calibrated at 3.3 V. The operational power supply range is from 2.4 V to 3.6 V. Voff, So and Vt parameters will vary with supply voltage.
2. Typical specifications are not guaranteed.
3. Guaranteed by wafer level test and measurement of initial offset and sensitivity.
4. Zero-g level and sensitivity are essentially ratiometric to supply voltage at the calibration level ±8%.
5. Guaranteed by design.
6. Contribution to the measuring output of an inclination/acceleration along any perpendicular axis.
7. “Self test output voltage change” is defined as Vout(Vst=Logic1)-Vout(Vst=Logic0).
8. “Self test output voltage change” varies cubically with supply voltage.
9. When full-scale is set to ±6 g, “Self test output voltage change” is one third of the specified value at ±2 g.
10. Minimum resonance frequency Fres=1.8 kHz. Sensor bandwidth=1/(2*π*110kΩ*Cload), with Cload>1 nF.
7/19
**LIS344ALH**
**Mechanical and electrical specifications**
## **2.2 Electrical characteristics**
**Table 4. Electrical characteristics @ Vdd =3.3 V, T = 25 °C unless otherwise noted[(1)]**
|**Symbol**|**Parameter**|**Test condition**|**Min.**|**Typ.(2)**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|
|Vdd|Supply voltage||2.4|3.3|3.6|V|
|Idd|Supply current|Normal mode||680|850|µA|
|||Power-down mode||1|5||
|Vfs
Vst
Vpd|Full-scale input
Self-test input
Power-down input|Logic 0 level|0||0.3*Vdd|V|
|||Logic 1 level|0.7*Vdd||Vdd|V|
|Rout|Output impedance of
VoutX, VoutY, VoutZ||90|110|130|KΩ|
|Cload|Capacitive load drive(3)
for VoutX, VoutY, VoutZ||1|||nF|
|Ton|Turn-on time at exit of
Power-down mode|Cload expressed in µF||550*Cload+
0.3||ms|
|Top|Operating temperature
range||-40||+85|ºC|
1. The product is factory calibrated at 3.3 V.
2. Typical specifications are not guaranteed.
3. Minimum resonance frequency Fres=1.8 kHz. Device bandwidth=1/(2*π*110 kΩ*Cload), with Cload>1 nF.
8/19
**LIS344ALH**
**Mechanical and electrical specifications**
## **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 maximum rating conditions for extended periods may affect device reliability.
## **Table 5. Absolute maximum ratings**
|**Table 5.**|**Absolute maximum ratings**|||
|---|---|---|---|
|**Symbol**|**Ratings**|**Maximum value**|**Unit**|
|Vdd|Supply voltage|-0.3 to 7|V|
|Vin|Input voltage on any control pin (FS, ST, PD)|-0.3 to Vdd +0.3|V|
|APOW|Acceleration (any axis, powered, Vdd = 3.3 V)|3000 g for 0.5 ms||
|||10000 g for 0.1 ms||
|AUNP|Acceleration (any axis, not powered)|3000 g for 0.5 ms||
|||10000 g for 0.1 ms||
|TSTG|Storage temperature range|-40 to +125|°C|
|ESD|Electrostatic discharge protection|4 (HBM)|KV|
|||1.5 (CDM)|KV|
|||400 (MM)|V|
This is a mechanical shock sensitive device, improper handling can cause permanent damages to the part
This is an ESD sensitive device, improper handling can cause permanent damages to the part
9/19
**LIS344ALH**
**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 interest towards the center of the Earth, note the output value, rotate the sensor by 180 degrees (point to the sky) and note the output value again thus applying ±1g acceleration to the sensor. Subtracting the larger output value from the smaller one, and dividing the result by 2, will give the actual sensitivity of the sensor. This value changes very little over temperature (see sensitivity change vs temperature) and also very little over time. The Sensitivity tolerance describes the range of sensitivities of a large population of sensors.
**Zero-g level** describes the actual output signal if there is no acceleration present. A sensor in a steady state on a horizontal surface will measure 0 g in X axis and 0 g in Y axis whereas the Z axis will measure 1g. The output is ideally for a 3.3 V powered sensor Vdd/2 = 1650 mV. A deviation from ideal 0-g level (1650 mV in this case) is called Zero-g offset. Offset of precise MEMS sensors is to some extend a result of stress to the sensor and therefore the offset can slightly change after mounting the sensor onto a printed circuit board or exposing it to extensive mechanical stress. Offset changes little over temperature - see “Zero-g level change vs temperature” - the Zero-g level of an individual sensor is very stable over lifetime. The Zero-g level tolerance describes the range of Zero-g levels of a population of sensors.
**Self test** allows to test the mechanical and electric part of the sensor, allowing the seismic mass to be moved by means of an electrostatic test-force. The Self Test function is off when the ST pin is connected to GND. When the ST pin is tied at Vdd an actuation force is applied to the sensor, simulating a definite input acceleration. In this case the sensor outputs will exhibit a voltage change in their DC levels which is related to the selected full-scale and depending on the supply voltage through the device sensitivity. When ST is activated, the device output level is given by the algebraic sum of the signals produced by the acceleration acting on the sensor and by the electrostatic test-force. If the output signals change within the amplitude specified inside _Table 3_ , then the sensor is working properly and the parameters of the interface chip are within the defined specification.
**Output impedance** describes the resistor inside the output stage of each channel. This resistor is part of a filter consisting of an external capacitor of at least 1 nF and the internal resistor. Due to the high resistor level, only small inexpensive external capacitors are needed to generate low corner frequencies. When interfacing with an ADC it is important to use high input impedance input circuitries to avoid measurement errors. Note that the minimum load capacitance forms a corner frequency close to the resonance frequency of the sensor. In general the smallest possible bandwidth for a particular application should be chosen to get the best results.
10/19
**LIS344ALH**
**Functionality**
## **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 and to provide an analog signal to the external world.
## **3.1 Sensing element**
A proprietary process is used to create a surface micro-machined accelerometer. The technology allows to carry out suspended silicon structures which are attached to the substrate in a few points called anchors and are free to move in the direction of the sensed acceleration. To be compatible with the traditional packaging techniques a cap is placed on top of the sensing element to avoid blocking the moving parts during the moulding phase of the plastic encapsulation.
When an acceleration is applied to the sensor the proof mass displaces from its nominal position, causing an imbalance in the capacitive half-bridge. This imbalance is measured using charge integration in response to a voltage pulse applied to the sense capacitor.
At steady state the nominal value of the capacitors are few pF and when an acceleration is applied the maximum variation of the capacitive load is in the fF range.
## **3.2 IC interface**
The complete signal processing uses a fully differential structure, while the final stage converts the differential signal into a single-ended one to be compatible with the external world.
The first stage is a low-noise capacitive amplifier that implements a Correlated Double Sampling (CDS) at its output to cancel the offset and the 1/f noise. The produced signal is then sent to three different S&Hs, one for each channel, and made available to the outside.
All the analog parameters (output offset voltage and sensitivity) are ratiometric to the voltage supply. Increasing or decreasing the voltage supply, the sensitivity and the offset will increase or decrease linearly. This feature provides the cancellation of the error related to the voltage supply along an analog to digital conversion chain.
## **3.3 Factory calibration**
The IC interface is factory calibrated for sensitivity (So) and Zero-g level (Voff). The trimming values are stored inside the device by a non volatile structure. Any time the device is turned on, the trimming parameters are downloaded into the registers to be employed during the normal operation. This allows the user to employ the device without further calibration.
11/19
**LIS344ALH**
**Application hints**
## **4 Application hints**
## **Figure 3. LIS344ALH electrical connection**
**==> picture [380 x 221] intentionally omitted <==**
**----- Start of picture text -----**
GND GND Vdd
100nF 10µF Z
16 15 14 13 1
FS Optional Pin 1 indicator
1 12 Vout x
ST Cload X
2 LIS344ALH 11
Optional Y
3 (top view) 10 Vout y
4 9 Cload Y X
5 6 7 8
(TOP VIEW)
Optional
DIRECTIONS OF THE
Vout z
DETECTABLE
Cload Z
ACCELERATIONS
GND
Digital signals
PD
**----- End of picture text -----**
Power supply decoupling capacitors (100 nF ceramic or polyester + 10 µF Aluminum) should be placed as near as possible to the device (common design practice).
The LIS344ALH allows to band limit VoutX, VoutY and VoutZ through the use of external capacitors. The recommended frequency range spans from DC up to 1.8 kHz. In particular, capacitors are added at output VoutX, VoutY, VoutZ pins to implement low-pass filtering for antialiasing and noise reduction. The equation for the cut-off frequency (ft) of the external filters is in this case:
**==> picture [144 x 25] intentionally omitted <==**
Taking into account that the internal filtering resistor (Rout) has a nominal value equal to 110 KΩ, the equation for the external filter cut-off frequency may be simplified as follows:
**==> picture [109 x 25] intentionally omitted <==**
The tolerance of the internal resistor can vary typically of ±20% within its nominal value of 110 KΩ; thus the cut-off frequency will vary accordingly. A minimum capacitance of 1 nF for Cload(x, y, z) is required.
12/19
**LIS344ALH**
**Application hints**
**Table 6. Filter capacitor selection, Cload (x, y, z),**
|**Cut-off frequency**|**Capacitor value**|
|---|---|
|1 Hz|1500 nF|
|10 Hz|150 nF|
|20 Hz|68 nF|
|50 Hz|30 nF|
|100 Hz|15 nF|
|200 Hz|6.8 nF|
|500 Hz|3 nF|
## **4.1 Soldering information**
The LGA package is compliant with the ECOPACK, RoHS and “Green” standard. It is qualified for soldering heat resistance according to JEDEC J-STD-020C.
Leave “Pin 1 Indicator” unconnected during soldering.
Land pattern and soldering recommendations are available at www.st.com/mems.
## **4.2 Output response vs orientation**
**==> picture [405 x 181] intentionally omitted <==**
**----- Start of picture text -----**
Figure 4. Output response vs orientation
X=2.31V (+1g) X=1.65V (0g) Bottom X=1.65V (0g)
Y=1.65V (0g) Y=2.31V (+1g) Y=1.65V (0g)
Z=1.65V (0g) Z=1.65V (0g) Top Z=0.99V (-1g)
Top X=1.65V (0g)
X=1.65V (0g) X=0.99V (-1g)
Y=0.99V (-1g) Y=1.65V (0g) Y=1.65V (0g)
Z=1.65V (0g) Z=1.65V (0g) Bottom Z=2.31V (+1g)
Earth’s Surface
**----- End of picture text -----**
_Figure 4_ shows output voltage values of LIS344ALH, powered at 3.3 V, with full-scale ±2 g.
13/19
**LIS344ALH**
**Typical performance characteristics**
## **5 Typical performance characteristics**
## **5.1 Mechanical characteristics at 25 °C**
**==> picture [448 x 513] intentionally omitted <==**
**----- Start of picture text -----**
Figure 5. X axis Zero-g level at 3.3 V Figure 6. X axis Sensitivity at 3.3 V
30 16
14
25
12
20
10
15 8
6
10
4
5
2
0 0
1.6 1.61 1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69 1.7 0.62 0.63 0.64 0.65 0.66 0.67 0.68 0.69 0.7
Zero−g Level Offset [V] Sensitivity [V/g]
Figure 7. Y axis Zero-g level at 3.3 V Figure 8. Y axis Sensitivity at 3.3 V
25 15
20
10
15
10
5
5
0 0
1.6 1.61 1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69 1.7 0.62 0.63 0.64 0.65 0.66 0.67 0.68 0.69 0.7
Zero−g Level Offset [V] Sensitivity [V/g]
Figure 9. Z axis Zero-g level at 3.3 V Figure 10. Z axis Sensitivity at 3.3 V
25 14
12
20
10
15
8
6
10
4
5
2
0 0
1.6 1.61 1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69 1.7 0.62 0.63 0.64 0.65 0.66 0.67 0.68 0.69 0.7
Zero−g Level Offset [V] Sensitivity [V/g]
Percent of parts [%] Percent of parts [%]
Percent of parts [%] Percent of parts [%]
Percent of parts [%] Percent of parts [%]
**----- End of picture text -----**
14/19
**LIS344ALH**
**Typical performance characteristics**
## **5.2 Mechanical characteristics derived from measurement in the -40 °C to +85 °C temperature range**
**==> picture [448 x 549] intentionally omitted <==**
**----- Start of picture text -----**
Figure 11. X axis Zero-g level change Figure 12. X axis Sensitivity change
vs. temperature at 3.3 V vs. temperature at 3.3 V
40 60
35
50
30
40
25
20 30
15
20
10
10
5
0 0
−4 −3 −2 −1 0 1 2 3 4 −0.1 −0.08 −0.06 −0.04 −0.02 0 0.02 0.04 0.06 0.08 0.1
Zero−g Level drift [mg/ [o] C] Sensitivity drift [%/ [o] C]
Figure 13. Y axis Zero-g level change Figure 14. Y axis Sensitivity change
vs. temperature at 3.3 V vs. temperature at 3.3 V
45 45
40 40
35 35
30 30
25 25
20 20
15 15
10 10
5 5
0 0
−4 −3 −2 −1 0 1 2 3 4 −0.1 −0.08 −0.06 −0.04 −0.02 0 0.02 0.04 0.06 0.08 0.1
Zero−g Level drift [mg/ [o] C] Sensitivity drift [%/ [o] C]
Figure 15. Z axis Zero-g level change Figure 16. Z axis Sensitivity change
vs. temperature at 3.3 V vs. temperature at 3.3 V
35 40
30 35
30
25
25
20
20
15
15
10
10
5 5
0 0
−4 −3 −2 −1 0 1 2 3 4 −0.1 −0.08 −0.06 −0.04 −0.02 0 0.02 0.04 0.06 0.08 0.1
Zero−g Level drift [mg/ [o] C] Sensitivity drift [%/ [o] C]
Percent of parts [%] Percent of parts [%]
Percent of parts [%] Percent of parts [%]
Percent of parts [%] Percent of parts [%]
**----- End of picture text -----**
15/19
**LIS344ALH**
**Typical performance characteristics**
## **5.3 Electrical characteristics at 25 °C**
**==> picture [427 x 182] intentionally omitted <==**
**----- Start of picture text -----**
Figure 17. Current consumption Figure 18. Current consumption
in normal mode at 3.3 V in power-down at 3.3 V
30 45
40
25
35
20 30
25
15
20
10 15
10
5
5
0 0
450 500 550 600 650 700 750 800 850 900 −4 −3 −2 −1 0 1 2 3 4
Current consumption [uA] Current consumption [uA]
Percent of parts [%] Percent of parts [%]
**----- End of picture text -----**
**Figure 19. Noise density at 3.3 V (X, Y axis) Figure 20. Noise density at 3.3 V (Z axis)**
**==> picture [424 x 160] intentionally omitted <==**
**----- Start of picture text -----**
30 30
25 25
20 20
15 15
10 10
5 5
0 0
18 20 22 24 26 28 30 32 10 20 30 40 50 60 70 80
Noise Density [/mug/sqrt(Hz)] Noise Density [/mug/sqrt(Hz)]
Frequency of parts [%] Frequency of parts [%]
**----- End of picture text -----**
16/19
**LIS344ALH**
**Package information**
## **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 with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK[®] is an ST trademark.
ECOPACK[®] specifications are available at: www.st.com.
## **Figure 21. LGA 16L: mechanical data and package dimensions**
**==> picture [405 x 490] intentionally omitted <==**
**----- Start of picture text -----**
Dimensions
mm inch Outline and
Ref.
Min. Typ. Max. Min. Typ. Max. mechanical data
A1 1.500 1.600 0.0591 0.0630
A2 1.330 0.0524
A3 0.160 0.200 0.240 0.0063 0.0079 0.0094
d 0.300 0.0118
D1 3.850 4.000 4.150 0.1516 0.1575 0.1634
E1 3.850 4.000 4.150 0.1516 0.1575 0.1634
L2 1.950 0.0768
M 0.100 0.0039
N1 0.650 0.0256
N2 0.975 0.0384
P1 1.750 0.0689
P2 1.525 0.0600 LGA 16L (4x4x1.5mm)
T1T2 0.4000.300 0.01570.0118 Land Grid Array Package
k 0.050 0.0020
7974136
**----- End of picture text -----**
17/19
**LIS344ALH**
**Revision history**
## **7 Revision history**
## **Table 7. Document revision history**
|**Date**|**Revision**|**Changes**|
|---|---|---|
|15-Jan-2008|1|Initial release.|
|18-Feb-2008|2|Minor text changes|
|29-Apr-2008|3|Updated_Section 2: Mechanical and electrical specifications_and
added distribution graphs in_Section 5: Typical performance_
_characteristics_|
18/19
**LIS344ALH**
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19/19
## Links
- [View this product on Novapart](https://novapart.co/products/LIS344ALHTR/mems-accelerometer-analogue-x-y-z-2g-6g-24-v-36)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/en-ES/stmicroelectronics/lis344alhtr/mems-accelerometer-2g-6g-lga/dp/3129601)
---
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