LIS244AL STMicroelectronics, LIS244AL Datasheet
LIS244AL
Specifications of LIS244AL
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LIS244AL Summary of contents
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... The device bandwidth may be reduced by using external capacitances. A self-test capability allows the user to check the functioning of the system. The LIS244AL is available in Land Grid Array package (LGA) and it is guarantee to operate over an extended temperature range of -40°C to +85°C. The LIS244AL belongs to a family of products suitable for a variety of applications: – ...
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... Mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1 Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1 Sensing element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.2 IC Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.3 Factory calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.1 Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.2 Output Response vs. orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2/15 LIS244AL ...
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... LIS244AL 1 Block diagram & pins description 1.1 Block diagram Figure 1. Block diagram a SELF TEST St 1.2 Pin Description Figure 2. Pin Connection X (TOP VIEW) DIRECTION OF THE DETECTABLE ACCELERATIONS X+ CHARGE Y+ AMPLIFIER MUX Y- X- TRIMMING CIRCUIT REFERENCE 1 Y Block diagram & pins description Routx S/H ...
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... Vouty NC Voutx NC Vdd Res NC Function Not to be connected 0V supply Not to be connected 0V supply 0V supply 0V supply Not to be connected Not to be connected Output voltage Y channel Not to be connected Output voltage X channel Not to be connected Power supply Connect to Vdd Not to be connected LIS244AL ...
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... LIS244AL 2 Mechanical and electrical specifications 2.1 Mechanical characteristics (Temperature range -40°C to +85°C). All the parameters are specified @ Vdd =3.0V 25°C unless otherwise noted Table 3. Mechanical characteristics Symbol Parameter (3) Ar Acceleration range (5) So Sensitivity Sensitivity change vs SoDr temperature (4) Voff Zero-g level ...
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... The product is factory calibrated at 3.0V 2. Typical specifications are not guaranteed Note: Minimum resonance frequency Fres=4.0kHz. Device bandwidth=1/(2* 6/15 (1) Test condition Min. 2.4 Logic 0 level 0 Logic 1 level 2.0 π Ω *32k *Cload) LIS244AL (2) Typ. Max. Unit 3.0 3.6 V 0.65 mA 0.8 V Vdd V 32 kΩ ...
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... LIS244AL 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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... 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. 8/15 LIS244AL ...
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... LIS244AL 3 Functionality The LIS244AL 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 to provide an analog signal to the external world. ...
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... Power supply decoupling capacitors (100nF ceramic or polyester + 10µF Aluminum) should be placed as near as possible to the device (common design practice). The LIS244AL allows to band limit Voutx, Vouty through the use of external capacitors. The recommended frequency range spans from 2.0kHz. In particular, capacitors are added at output Voutx, Vouty pins to implement low-pass filtering for antialiasing and noise reduction ...
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... The LGA package is compliant with the ECOPACK, RoHs and “Green” standard. Pin1 indicator is electrically connected to pin 1. Leave pin 1 indicator unconnected during soldering. 4.2 Output Response vs. orientation Figure 4. Output response vs. orientation X=1.83V (+1g) Y=1.50V (0g) Figure 4 refers to LIS244AL powered at 3.0V. (x,y), load 100 Hz 200 Hz 500 Hz X=1 ...
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... These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and 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 trademark. ECOPACK specifications are available at: www.st.com. 12/15 LIS244AL ...
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... LIS244AL Figure 5. LGA 16: mechanical data & package dimensions mm Ref. Min. Typ. Max. Min 0.160 0.20 D1 3.850 4.0 E1 3.850 4.0 L 0.65 L1 1.95 N 0.98 N1 1.90 T1 0.40 T2 0.30 P1 1.750 P2 1.525 R 0.30 S 0.10 k 0.05 Dimensions inch Typ. Max. 1.60 0.039 0.063 1.33 0.052 0.24 0.006 ...
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... Revision history 6 Revision history Table 7. Document revision history Date 29-Jun-2007 14/15 Revision 1 Initial release LIS244AL Changes ...
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... LIS244AL 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 any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...