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april 2008 rev 3 1/19 19 lis344alh mems inertial sensor high performance 3-axis 2/6g ultracompact linear accelerometer 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 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 availabl e 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. lga 16l (4x4x1.5 mm) 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 www.st.com
content lis344alh 2/19 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 characteristi cs . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
lis344alh list of figures 3/19 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
list of tables lis344alh 4/19 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, c load (x, y, z), . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 table 7. document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
lis344alh block diagram and pin description 5/19 1 block diagram and pin description 1.1 block diagram figure 1. block diagram 1.2 pin description figure 2. pin connection s/h s/h routx routz reference trimming circuit clock s/h routy charge amplifier demux voutx voutz vouty y+ z+ y- z- x+ x- a self test mux (top view) directions of the detectable accelerations (bottom view) y 1 x z fs st nc res voutx nc vouty nc gnd nc pd voutz vdd res nc nc 1 8 12 5 4 9 13 16
block diagram and pin description lis344alh 6/19 table 2. pin description pin # pin name function 1 fs full scale selection (l ogic 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
lis344alh mechanical and electrical specifications 7/19 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 g/ 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 specificat ions are not guaranteed. 3. guaranteed by wafer level test and measurement of initial offset and sensitivity. 4. zero-g level and sensitivity are e ssentially ratiometric to supply voltage at the calibration level 8%. 5. guaranteed by design. 6. contribution to the measuring output of an in clination/acceleration al ong any perpendicular axis. 7. ?self test output voltage change? is defined as vout (vst=logic1) -vout (vst=logic0) . 8. ?self test output voltage change? va ries cubically with supply voltage. 9. when full-scale is set to 6 g, ?self test output volt age change? is one third of the specified value at 2 g. 10. minimum resonance frequency fres=1 .8 khz. sensor bandwidth=1/(2* *110k ? *cload), with cload>1 nf. hz
mechanical and electrical specifications lis344alh 8/19 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 a 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 k ? cload capacitive load drive (3) for voutx, vouty, voutz 1nf to n turn-on time at exit of power-down mode cload expressed in f 550*cload+ 0.3 ms to p operating temperature range -40 +85 oc 1. the product is factory calibrated at 3.3 v. 2. typical specificat ions are not guaranteed. 3. minimum resonance frequency fres=1 .8 khz. device bandwidth=1/(2* *110 k ? *cload), with cload>1 nf.
lis344alh mechanical and electrical specifications 9/19 2.3 absolute maximum ratings stresses above those listed as ?absolute ma ximum 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 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 a pow acceleration (any axis, powered, vdd = 3.3 v) 3000 g for 0.5 ms 10000 g for 0.1 ms a unp acceleration (any axis, not powered) 3000 g for 0.5 ms 10000 g for 0.1 ms t stg 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
mechanical and electrical specifications lis344alh 10/19 2.4 terminology sensitivity describes the gain of the sensor and can be determined by applying 1g acceleration to it. as the sensor can measur e 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 s ensitivity 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 me asure 0 g in x axis and 0 g in y axis whereas the z axis will measure 1g. the ou tput 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 pi n is tied at vdd an actuation force is applied to the sensor, simulating a definite input acce leration. in this case the sensor outputs will exhibit a voltage change in their dc levels wh ich is related to the selected full-scale and depending on the supply voltage through the devi ce 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 ta bl e 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.
lis344alh functionality 11/19 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 s ilicon 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 capacit ive 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 de creasing the voltage supply, t he 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.
application hints lis344alh 12/19 4 application hints figure 3. lis344alh electrical connection power supply decoupling capacitors (100 nf ceramic or polyester + 10 f 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 (f t ) of the external filters is in this case: taking into account that the internal filtering resistor (r out ) has a nominal value equal to 110 k ? , the equation for the external filter cut-off frequency may be simplified as follows: the tolerance of the internal resistor can vary typically of 20% within its nominal value of 110 k ? ; thus the cut-off frequency will vary accordingly. a minimum capacitance of 1 nf for c load (x, y, z) is required. digital signals lis344alh (top view) (top view) directions of the detectable accelerations y 1 x z st gnd 1 4 9 12 vdd gnd gnd 100nf 10 f vout y cload y vout x cload x vout z cload z optional 5 16 2 3 67 8 10 11 15 14 13 fs pd pin 1 indicator optional optional f t 1 2 r out c load xyz ,, () ?? ------------------------------------------------------------------------ - = f t 1.45 f c load xyz ,, () -------------------------------------- - hz [] =
lis344alh application hints 13/19 4.1 soldering information the lga package is compliant with the ecopack, rohs and ?green? standard. it is qualified for soldering heat resist ance 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 figure 4. output response vs orientation figure 4 shows output voltage values of lis344alh, powered at 3.3 v, with full-scale 2 g. table 6. filter capacitor selection, c load (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 earth?s surface x=1.65v (0g) y=1.65v (0g) z=0.99v (-1g) x=1.65v (0g) y=1.65v (0g) z=2.31v (+1g) x=1.65v (0g) y=2.31v (+1g) x=1.65v (0g) y=0.99v (-1g) x=0.99v (-1g) y=1.65v (0g) x=2.31v (+1g) y=1.65v (0g) z=1.65v (0g) z=1.65v (0g) z=1.65v (0g) z=1.65v (0g) to p bottom to p bottom
typical performance characteristics lis344alh 14/19 5 typical performance characteristics 5.1 mechanical characteristics at 25 c figure 5. x axis zero-g level at 3.3 v figure 6. x axis sensitivity at 3.3 v figure 7. y axis zero-g level at 3.3 v figure 8. y axis sensitivity at 3.3 v figure 9. z axis zero-g level at 3.3 v figure 10. z axis sensitivity at 3.3 v 1.6 1.61 1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69 1.7 0 5 10 15 20 25 30 zero?g level offset [v] percent of parts [%] 0.62 0.63 0.64 0.65 0.66 0.67 0.68 0.69 0.7 0 2 4 6 8 10 12 14 16 sensitivity [v/g] percent of parts [%] 1.6 1.61 1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69 1.7 0 5 10 15 20 25 zero?g level offset [v] percent of parts [%] 0.62 0.63 0.64 0.65 0.66 0.67 0.68 0.69 0.7 0 5 10 15 sensitivity [v/g] percent of parts [%] 1.6 1.61 1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69 1.7 0 5 10 15 20 25 zero?g level offset [v] percent of parts [%] 0.62 0.63 0.64 0.65 0.66 0.67 0.68 0.69 0.7 0 2 4 6 8 10 12 14 sensitivity [v/g] percent of parts [%]
lis344alh typical performance characteristics 15/19 5.2 mechanical characteristics de rived from measurement in the -40 c to +85 c temperature range figure 11. x axis zero-g level change vs. temperature at 3.3 v figure 12. x axis sensitivity change vs. temperature at 3.3 v figure 13. y axis zero-g level change vs. temperature at 3.3 v figure 14. y axis sensitivity change vs. temperature at 3.3 v figure 15. z axis zero-g level change vs. temperature at 3.3 v figure 16. z axis sensitivity change vs. temperature at 3.3 v ?4 ?3 ?2 ?1 0 1 2 3 4 0 5 10 15 20 25 30 35 40 zero?g level drift [mg/ o c] percent of parts [%] ?0.1 ?0.08 ?0.06 ?0.04 ?0.02 0 0.02 0.04 0.06 0.08 0.1 0 10 20 30 40 50 60 sensitivity drift [%/ o c] percent of parts [%] ?4 ?3 ?2 ?1 0 1 2 3 4 0 5 10 15 20 25 30 35 40 45 zero?g level drift [mg/ o c] percent of parts [%] ?0.1 ?0.08 ?0.06 ?0.04 ?0.02 0 0.02 0.04 0.06 0.08 0.1 0 5 10 15 20 25 30 35 40 45 sensitivity drift [%/ o c] percent of parts [%] ?4 ?3 ?2 ?1 0 1 2 3 4 0 5 10 15 20 25 30 35 zero?g level drift [mg/ o c] percent of parts [%] ?0.1 ?0.08 ?0.06 ?0.04 ?0.02 0 0.02 0.04 0.06 0.08 0.1 0 5 10 15 20 25 30 35 40 sensitivity drift [%/ o c] percent of parts [%]
typical performance characteristics lis344alh 16/19 5.3 electrical characteristics at 25 c figure 17. current consumption in normal mode at 3.3 v figure 18. current consumption in power-down at 3.3 v figure 19. noise density at 3.3 v (x, y axis) figure 20. noise density at 3.3 v (z axis) 450 500 550 600 650 700 750 800 850 900 0 5 10 15 20 25 30 current consumption [ua] percent of parts [%] ?4 ?3 ?2 ?1 0 1 2 3 4 0 5 10 15 20 25 30 35 40 45 current consumption [ua] percent of parts [%] 18 20 22 24 26 28 30 32 0 5 10 15 20 25 30 noise density [/mug/sqrt(hz)] frequency of parts [%] 10 20 30 40 50 60 70 80 0 5 10 15 20 25 30 noise density [/mug/sqrt(hz)] frequency of parts [%]
lis344alh package information 17/19 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 th e 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 dimensions ref. mm inch min. typ. max. min. typ. max. a1 1.500 1.600 0.05 9 10.06 3 0 a2 1. 33 0 0.0524 a 3 0.160 0.200 0.240 0.006 3 0.007 9 0.00 9 4 d0. 3 00 0.011 8 d1 3 . 8 50 4.000 4.150 0.1516 0.1575 0.16 3 4 e1 3 . 8 50 4.000 4.150 0.1516 0.1575 0.16 3 4 l2 1. 9 50 0.076 8 m 0.100 0.00 39 n1 0.650 0.0256 n2 0. 9 75 0.0 38 4 p1 1.750 0.06 89 p2 1.525 0.0600 t1 0.400 0.0157 t2 0. 3 00 0.011 8 k 0.050 0.0020 lga 16l (4x4x1.5mm) land grid array packa g e outline and 7 9 741 3 6 mechanical data
revision history lis344alh 18/19 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
lis344alh 19/19 please read carefully: 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 he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2008 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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