LIS244ALH STMicroelectronics, LIS244ALH Datasheet
LIS244ALH
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LIS244ALH Summary of contents
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... The self-test capability allows the user to check the functioning of the system. The LIS244ALH is available in Land Grid Array package (LGA) manufactured by ST guaranteed to operate over an extended temperature range of -40 °C to +85 °C. The LIS244ALH belongs to a family of products suitable for a variety of applications: – ...
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... 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 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 LIS244ALH ...
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... LIS244ALH List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 3. LIS244ALH electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 4. Output response vs. orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 5. LGA16: mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 List of figures 3/16 ...
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... List of tables List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 3. Mechanical characteristics @ Vdd =3 °C unless otherwise noted . . . . . . . . . . . 7 Table 4. Electrical characteristics @ Vdd =3 °C unless otherwise noted Table 5. Absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 6. Filter capacitor selection, C Table 7. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4/16 (x, load LIS244ALH ...
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... LIS244ALH 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 MUX DEMUX Y- X- REFERENCE TRIMMING CIRCUIT 1 Y Block diagram and pin description Routx ...
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... Power Down (Logic 0: normal mode; Logic 1: Power-Down mode) NC GND NC NC VoutY NC VoutX NC Vdd Res NC Function Internally not connected Internally not connected 0V supply Internally not connected Internally not connected Output voltage Y channel Internally not connected Output voltage X channel Internally not connected Power supply Connect to Vdd Internally not connected LIS244ALH ...
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... LIS244ALH 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 Zero-g level Zero-g level change vs OffDr temperature (5) NL Non linearity (6) CrossAx Cross-axis Acceleration noise ...
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... Typical specifications are not guaranteed. 3. Minimum resonance frequency Fres=2.0 KHz. Device bandwidth=1/(2*π*110 kΩ*Cload), with Cload>1 nF. 8/16 Test condition Normal mode Power-down mode Logic 0 level Logic 1 level (3) Cload expressed in µF LIS244ALH (1) (2) Min. Typ. Max. 2.4 3.3 3.6 680 ...
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... LIS244ALH 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 ...
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... 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. 10/16 Table 3, then the sensor is working properly and the LIS244ALH ...
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... LIS244ALH 3 Functionality The LIS244ALH is an ultra compact low-power, analog output two-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 provide an analog signal to the external world. ...
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... Power supply decoupling capacitors (100 nF ceramic or polyester + 10 should be placed as near as possible to the device (common design practice). The LIS244ALH allows to band limit VoutX and VoutY through the use of external capacitors. The recommended frequency range spans from 2.0 KHz. In particular, capacitors are added at output VoutX and VoutY pins to implement low-pass filtering for antialiasing and noise reduction ...
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... Leave “Pin 1 Indicator” unconnected during soldering. Land pattern and soldering recommendations are available at 4.2 Output response vs. orientation Figure 4. Output response vs. orientation X=2.31V (+1g) Y=1.65V (0g) X=1.65V (0g) Y=0.99V (-1g) Figure 4 shows output voltage values of LIS244ALH, powered at 3.3 V, with full-scale ±2 g. (x,y) load 100 Hz 200 Hz 500 Hz X=1.65V (0g) Y=2 ...
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... LIS244ALH ® trademark. . Outline and mechanical data LGA16L (4x4x1.5mm) Land Grid Array Package 7974136D ® ...
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... LIS244ALH 6 Revision history Table 7. Document revision history Date 15-Jan-2008 19-Feb-2008 Revision 1 Initial release. 2 Updated Figure 2: Pin connection on page 5 Revision history Changes 15/16 ...
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