LIS352AX STMicroelectronics, LIS352AX Datasheet
LIS352AX
Specifications of LIS352AX
Available stocks
Related parts for LIS352AX
LIS352AX Summary of contents
Page 1
... Gaming and virtual reality input devices ■ Anti-theft systems and Inertial navigation Description The LIS352AX is a new small size, low-power 3- axis linear accelerometer that includes a sensing element and an IC interface capable of providing an absolute analog signal to the external world. The IC interface is manufactured using a CMOS ...
Page 2
... Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.3 Zero-g level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.4 Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.5 Output impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.1 Sensing element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.2 IC interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.3 Factory calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.1 Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.2 Output response vs. orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2/15 Doc ID 15530 Rev 2 LIS352AX ...
Page 3
... LIS352AX 1 Block diagram and pin description Figure 1. Block diagram a SELF-TEST REFERENCE 1.1 Pin connections and description Figure 2. Pin connection (TOP VIEW) DIRECTIONS OF DETECTABLE ACCELERATIONS X+ CHARGE Y+ AMPLIFIER Z+ MUX DEMUX TRIMMING CIRCUIT 1 Doc ID 15530 Rev 2 Block diagram and pin description Routx S/H Routy ...
Page 4
... Self-test (logic 0: normal mode; logic 1: self-test) PD Power-down (logic 0: normal mode; logic 1: power-down mode) Voutx Output voltage X channel Vouty Output voltage Y channel Voutz Output voltage Z channel GND 0 V supply Vout Multiplexer output Aux_in Auxiliary input Vdd Power supply Connect to Vdd Doc ID 15530 Rev 2 LIS352AX Function ...
Page 5
... LIS352AX 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 (2) Ar Acceleration range (3) So Sensitivity Sensitivity change vs. SoDr temperature (4) Voff Zero-g level Zero-g level change OffDr vs temperature (4) NL Non linearity (5) CrossAx Cross-axis ...
Page 6
... LOAD =2.0 kHz. Device bandwidth=1/(2*π*32kΩ*C Doc ID 15530 Rev 2 (1) Min. Typ. Max. 2.16 3.3 3.6 0 0.2*Vdd Vdd 0 0.2*Vdd Vdd 0 0.2*Vdd Vdd 32 2 160*C +0.3 LOAD ), with C >2.5nF LOAD LOAD Table LIS352AX Unit V mA µA V kΩ nF kΩ ...
Page 7
... LIS352AX 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 ...
Page 8
... Note that the minimum load capacitance forms a corner frequency close to the resonant frequency of the sensor. In general, the smallest possible bandwidth for a particular application should be chosen to obtain the best results. 8/15 Table 3: Mechanical Table 3, then the sensor is working properly and Doc ID 15530 Rev 2 LIS352AX characteristics). The ...
Page 9
... LIS352AX 4 Functionality The LIS352AX is a 3-axis ultracompact low-power, analog output linear accelerometer packaged in a LGA package. The complete device includes a sensing element and an IC interface capable of taking information from the sensing element providing an analog signal to the external world. 4.1 Sensing element A proprietary process is used to create a surface micro-machined accelerometer ...
Page 10
... 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 LIS352AX allows band limiting of Voutx, Vouty and Voutz through the use of external capacitors. The recommended frequency range spans from 2.0 kHz. Capacitors must be added at the output pins to implement low-pass filtering for anti-aliasing and noise reduction, even if only the multiplexed output (Vout) is used ...
Page 11
... LIS352AX The tolerance of the internal resistor can vary ±20% (typ) from its nominal value of 32 kΩ; thus the cut-off frequency will vary accordingly. A minimum capacitance of 2.5 nF for C ( required. An external capacitor can be added to the Vout pin. Values below 10 pF are recommended. Table 6. ...
Page 12
... Application hints 5.2 Output response vs. orientation Figure 4. Output response vs. orientation X=1.25V (0g) Y=1.61V (+1g) Z=1.25V (0g) 12/15 X=0.89V (-1g) Y=1.25V (0g) Z=1.25V (0g) X=1.25V (0g) TOP VIEW Y=0.89V (-1g) Z=1.25V (0g) X=1.61V (+1g) Y=1.25V (0g) Z=1.25V (0g) Doc ID 15530 Rev 2 LIS352AX Bottom X=1.25V (0g) Y=1.25V (0g) Top Z=0.89V (-1g) Top X=1.25V (0g) Y=1.25V (0g) Z=1.61V (+1g) Bottom Earth’ surface ...
Page 13
... LIS352AX 6 Package information In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK trademark. Figure 5. LGA-14: mechanical data and package dimensions Ref. ...
Page 14
... Revision history 7 Revision history Table 8. Document revision history Date 26-Mar-2009 02-Feb-2009 14/15 Revision 1 Initial datasheet Section 2.1: Mechanical characteristics Updated Electrical characteristics. 2 Minor text changes Doc ID 15530 Rev 2 LIS352AX Changes Section 2.2: and ...
Page 15
... LIS352AX 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. ...