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preliminary data this is preliminary information on a new product now in deve lopment or undergoing evaluation. details are subject to change without notice. july 2009 doc id 15811 rev 2 1/12 12 LPR510AL mems motion sensor: dual axis pitch and roll 100/s analog gyroscope features 2.7 v to 3.6 v single-supply operation wide operating temperature range (-40 c to +85 c) high stability overtemperature analog absolute angular-rate output two separate outputs for each axis (1x and 4x amplified) integrated low-pass filters low power consumption embedded power-down embedded self-test high shock and vibration survivability ecopack ? rohs and ?green? compliant (see section 5 ) applications gps navigation systems motion tracking pointing devices, remote and game controllers motion control with user interface industrial and robotics description the LPR510AL is a low-power dual-axis micromachined gyroscope capable of measuring angular rate along pitch and roll axes. it provides excellent temperature stability and high resolution over an extended operating temperature range (-40 c to +85 c). the LPR510AL has a full scale of 100 /s and is capable of detecting rates with a -3 db bandwidth up to 140 hz. the gyroscope is the combination of one actuator and one accelerometer integrated in a single micromachined structure. it includes a sensing element composed by single driving mass, kept in continuous oscillating movement and able to react when an angular rate is applied based on the coriolis principle. a cmos ic provides the measured angular rate to the external world through an analog output voltage, allowing high level of integration and production trimming to better match sensing element characteristics. st?s gyroscope family leverages on robust and mature manufacturing process already used for the production of micromachined accelerometers. st is already in the field with several hundreds million sensors with excellent acceptance from the market in terms of quality, reliability and performance. LPR510AL is provided in plastic land grid array (lga) package. several years ago st pioneered successfully the usage of this package for accelerometers. today st has the widest manufacturing capability an d strongest expertise in the world for production of sensor in plastic lga package. lga-16l (5x5x1.5mm) table 1. device summary order code temperature range (c) package packing LPR510AL -40 to +85 lga-16 (5x5x1.5) tray LPR510ALtr -40 to +85 lga-16 (5x5x1.5) tape and reel www.st.com
contents LPR510AL 2/12 doc id 15811 rev 2 contents 1 block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1 mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.1 sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2 zero-rate level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.3 self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.4 high pass filter reset (hp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 output response vs. rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.2 soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
LPR510AL block diagram and pin description doc id 15811 rev 2 3/12 1 block diagram and pin description figure 1. block diagram 1.1 pin description figure 2. pin connection clock trimming circuits reference demodulator charge amplifier phase generator switched 4x out x (amplified) x/y low-pass capacitor filter driving mass + - demodulator charge amplifier switched 4x out y (amplified) low-pass capacitor filter optional filter lp/hp optional filter lp/hp gain gain not amplified not amplified 4x 4x feedback loop + - + ? x + ? y filtered output x filtered output y (top view) direction of the detectable angular rates gnd vcont 4xinx filtvdd 4xouty vref outx st vdd res outy 4xiny hp 16 14 6 8 9 13 1 5 (bottom view) res 4xoutx pd + ? x + ? y
block diagram and pin description LPR510AL 4/12 doc id 15811 rev 2 table 2. pin description pin # pin name analog function 1 gnd 0v supply voltage 2 filtvdd pll filter connection pin #2 3 vcont pll filter connection pin #1 4 outy not amplified output 5 4xiny input of 4x amplifier 6 4xouty y rate signal output voltage (amplified) 7 vref reference voltage 8 4xoutx x rate signal output voltage (amplified) 9 4xinx input of 4x amplifier 10 outx not amplified output 11 st self-test (logic 0: norm al mode; logic 1: self-test) 12 pd power-down (logic 0: normal mode; logic 1: power-down mode) 13 hp high pass filter reset (logic 0: normal operation mode; logic1: external high pass filter is reset) 14,15 res reserved. connect to vdd 16 vdd power supply
LPR510AL mechanical and electrical specifications doc id 15811 rev 2 5/12 2 mechanical and electrical specifications 2.1 mechanical characteristics table 3. mechanical characteristics @ vdd = 3 v, t = 25 c unless otherwise noted (1) symbol parameter test condition min. typ. (2) max. unit fsa measurement range 4x out (amplified) 100 /s fs out (not amplified) 400 /s soa sensitivity (3) 4x out (amplified) 10 mv/ /s so out (not amplified) 2.5 mv/ /s sodr sensitivity change vs temperature delta from 25c 0.03 %/c voff zero-rate level (3) 1.23 v vref reference voltage 1.23 v offdr zero-rate level change vs temperature delta from 25c 0.02 /s/c nl non linearity best fit straight line 1 % fs bw bandwidth (4) 140 hz rn rate noise density 0.017 /s / to p operating temperature range -40 +85 c 1. the product is factory calibrated at 3 v. t he operational power supply range is specified in table 4 . 2. typical specificat ions are not guaranteed 3. sensitivity and zero-rate level are not ratiometric to supply voltage 4. the product is capable of measuring angular rates extending from dc to the selected bw. hz
mechanical and electrical specifications LPR510AL 6/12 doc id 15811 rev 2 2.2 electrical characteristics 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 4. electrical characteristics @ vdd =3 v, t=25 c unless otherwise noted (1) symbol parameter test condition min. typ. (2) max. unit vdd supply voltage 2.7 3 3.6 v idd supply current pd pin connected to gnd 6.8 ma iddpdn supply current in power-down mode pd pin connected to vdd 1 5 a v st self-test input logic 0 level 0 0.2*vdd v logic 1 level 0.8*vdd vdd v pd power-down input logic 0 level 0 0.2*vdd v logic 1 level 0.8*vdd vdd to p operating temperature range -40 +85 c 1. the product is factory calibrated at 3 v 2. typical specificat ions are not guaranteed table 5. absolute maximum ratings symbol ratings maximum value unit vdd supply voltage -0.3 to 6 v vin input voltage on any control pin (pd, st) -0.3 to vdd +0.3 v t stg storage temperature range -40 to +125 c a acceleration 3000 g for 0.5 ms 10000 g for 0.1 ms esd electrostatic discharge protection 2 (hbm) kv this is a mechanical shock sensitive device, improper handling can cause permanent damage to the part this is an esd sensitive device, improper handling can cause permanent damage to the part
LPR510AL terminology doc id 15811 rev 2 7/12 3 terminology 3.1 sensitivity an angular rate gyroscope is a device that produces a positive-going output voltage for counterclockwise rotation around the sensitive axis considered. sensitivity describes the gain of the sensor and can be determined by applying a defined angular velocity to it. this value changes very little over temperature and time. 3.2 zero-rate level zero-rate level describes the actual output signal if there is no angular rate present. the zero-rate level of precise mems sensors is, to some extent, a result of stress to the sensor and therefore zero-rate level can slightly ch ange after mounting the sensor onto a printed circuit board or after exposing it to extensive mechanical stress. this value changes very little over temperature and time. 3.3 self-test self-test allows testing of the mechanical and electrical 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 to vdd, an actuation force is applied to the sensor, emulating a definite coriolis force. in this case the sensor output will exhibit a voltage change in its dc level which is also dependent on the supply voltage. when st is active, the device output level is given by the algebraic sum of the signals produced by the velocity acting on the sensor an d by the electrostatic test-force. if the output signals change within the amplitude specified in table 3 , then the mechanical element is working properly and the parameters of the interface chip are within the defined specifications. 3.4 high pass filter reset (hp) the LPR510AL provides the poss ibility to reset the optional ex ternal high pass filter by applying a high logic value to the hp pad. this procedure ensures faster response, especially during overload conditions. moreover , this operation is suggested each time the device is powered.
application hints LPR510AL 8/12 doc id 15811 rev 2 4 application hints figure 3. LPR510AL electrical connections and external components values 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 LPR510AL allows band limiting of the output rate response through the use of an external low pass filter (suggested) and/or high pass filter (optional) in addition to the embedded low pass filter (f t = 140 hz). 4xoutx and 4xouty are respectively outx and outy amplified outputs lines, internally buffered to ensure low output impedance. if external high pass or low pass filtering is not applied it is mandatory to short-circuit respectively pad 4 to pad 5 and pad 9 to pad 10 when amplified outputs are used. when only not-amplified outputs are used (outx/y), it is suggested to set pads 5 and 9 to fixed reference voltage (gnd/vref). when high pass filter is applied to not amplified output (outx), it is recommended to buffer the line before entering adc for performance optimization. the LPR510AL ic includes a pll (phase locked loop) circuit to synchronize driving and sensing interfaces. capacitors and resistors must be added at the filtvdd and vcont pins (as shown in figure 3 ) to implement a low-pass filter. (top view) direction of the detectable angular rates + ? y + ? x 100 nf 10kohm 470nf vdd gnd hp vref 4xouty c2 r1 c1 gnd 10 f gnd recomended low-pass filter LPR510AL (top view) 1 16 14 13 9 8 6 5 10nf pd st gnd vref 4xoutx optional high-pass filter vref gnd typical values: c1 r1 c2 r2 c1 r1 c2 r2 r1 = 1mohm c1 = 4.7 f r2 = 33kohm c2 = 2.2 nf to 2.2 f not amplified filtered output y not amplified filtered output x
LPR510AL application hints doc id 15811 rev 2 9/12 4.1 output response vs. rotation figure 4. output response vs. rotation 4.2 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. steady state position: 4xoutx = 4xouty = 1.23v outx = outy = 1.23v positive rotations as indicated by arrows +100/sec --> 4xoutx, 4xouty = 1.23v + soa*100 = 2.23v +100/sec --> outx, outy = 1.23v + so*100 = 1.48v increase output value over zero rate level: + ? y + ? x + ? y + ? x
package information LPR510AL 10/12 doc id 15811 rev 2 5 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 is an st trademark. figure 5. lga-16: mechanical data and package dimensions a1 1.46 1.5 1.6 0.057 0.059 0.06 3 a2 1. 33 0.052 a 3 0.16 0.2 0.24 0.006 0.00 8 0.009 c0. 3 0.012 d1 4. 8 5 5 5.15 0.191 0.197 0.20 3 e1 4. 8 5 5 5.15 0.191 0.197 0.20 3 l0. 8 0.0 3 1 l1 3 .2 0.126 m 1.6 0.062 m1 2.15 2.175 2.20 0.0 8 50.0 8 60.0 8 7 m2 1.625 0.064 n 2.175 0.0 8 6 n1 2.4 0.094 t1 0. 8 0.0 3 1 t2 0.475 0.5 0.525 0.019 0.020 0.021 r 1.2 1.6 0.047 0.06 3 s 0.1 0.004 h 0.15 0.006 k 0.05 0.002 j 0.1 0.004 lga-16 (5x5x1.5mm) land grid array packa g e 7 88 7555a
LPR510AL revision history doc id 15811 rev 2 11/12 6 revision history table 6. document revision history date revision changes 04-jun-2009 1 initial release 06-jul-2009 2 small text changes to improve readability. updated table 4
LPR510AL 12/12 doc id 15811 rev 2 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. ? 2009 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 - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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