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| october 2009 doc id 16573 rev 1 1/14 14 LPR410AL mems motion sensor: dual-axis pitch and roll 100 dps analog gyroscope features 2.7 v to 3.6 v single-supply operation wide operating temperature range (-40 c to +85 c) high stability over temperature analog absolute angular-rate outputs two separate outputs for each axis (1x and 4x amplified) integrated low-pass filters low power consumption embedded power-down embedded self-test sleep mode high shock and vibration survivability ecopack ? rohs and ?green? compliant (see section 6 ) applications gps navigation systems motion tracking pointing devices, remote and game controllers motion controlled user interface industrial and robotics description the LPR410AL 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 LPR410AL has a full scale of 100 dps and is capable of detecting rates with a -3 db bandwidth up to 140 hz. the device includes a sensing element composed of a single driving mass, kept in continuous oscillation and capable of reacting, based on the coriolis principle, when an angular rate is applied. a cmos ic provides the measured angular rate to the external world through an analog output voltage, allowing high le vels of integration and production trimming to better match sensing element characteristics. st's family of gyroscopes leverages on the mature and robust manufacturing process already used for the production of micro-machined accelerometers. st is already in the field with several hundred million sensors which have received excellent acceptance from the market in terms of quality, reliability and performance. LPR410AL is available in a plastic land grid array (lga) package, which st successfully pioneered for accelerometers.today st has the widest manufacturing capability an d strongest expertise in the world for production of sensors in plastic lga packages. lga-28 (4x5x1 mm) table 1. device summary order code temperature range (c) package packing LPR410AL -40 to +85 lga-28 (4x5x1) tray LPR410ALtr -40 to +85 lga-28 (4x5x1) tape and reel www.st.com
contents LPR410AL 2/14 doc id 16573 rev 1 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 3 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.2 zero-rate level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.3 self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.4 high pass filter reset (hp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.5 sleep mode, self test and power down . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.1 output response vs. rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.2 soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 LPR410AL block diagram and pin description doc id 16573 rev 1 3/14 1 block diagram and pin description figure 1. block diagram 1.1 pin description figure 2. pin connection $ % - / $ 5 , ! 4 / 2 # ( ! 2 ' % ! - 0 , ) & ) % 2 3 7 ) 4 # ( % $ x / 5 4 8 a m p l i f i e d 8 : , / 7 0 ! 3 3 # ! 0 ! # ) 4 / 2 & ) , 4 % 2 $ 2 ) 6 ) . ' - ! 3 3 $ % - / $ 5 , ! 4 / 2 # ( ! 2 ' % ! - 0 , ) & ) % 2 3 7 ) 4 # ( % $ x / 5 4 9 a m p l i f i e d , / 7 0 ! 3 3 # ! 0 ! # ) 4 / 2 & ) , 4 % 2 / p t i o n a l & i l t e r , 0 ( 0 / p t i o n a l & i l t e r , 0 ( 0 ' ! ) . ' ! ) . . o t a m p l i f i e d . o t a m p l i f i e d x x & e e d b a c k l o o p : 8 : : f i l t e r e d o u t p u t 8 f i l t e r e d o u t p u t : ! - v 2 e f e r e n c e 4 r i m m i n g c i r c u i t s # l o c k 0 h a s e g e n e r a t o r 4 / 0 6 ) % 7 $ ) 2 % # 4 ) / . / & 4 ( % $ % 4 % # 4 ! " , % ! . ' 5 , ! 2 2 ! 4 % 3 x ) . 9 & ) , 4 6 $ $ x / 5 4 9 6 r e f / 5 4 8 & ) , 4 ) . 9 & ) , 4 / 5 4 9 / 5 4 9 . # " / 4 4 / - 6 ) % 7 x / 5 4 8 : y : x . # . # ( 0 2 e s ' . $ 3 4 3 , % % 0 0 $ . # . # . # . # . # 6 $ $ x ) . 8 & ) , 4 6 $ $ / 5 4 9 6 $ $ . # . # . # 6 # / . 4 , 0 2 ! , . # ! - v block diagram and pin description LPR410AL 4/14 doc id 16573 rev 1 table 2. pin description pin # pin name analog function 1 out x x rate signal output voltage (not amplified) 2 nc internally not connected 3 nc internally not connected 4 nc internally not connected 5 4xin x input of 4x amplifier 6 nc internally not connected 7 4xoutx x rate signal output voltage (amplified) 8 nc internally not connected 9 vdd power supply 10 nc internally not connected 11 nc internally not connected 12 nc internally not connected 13 nc internally not connected 14 4xouty y rate signal output voltage (amplified) 15 nc internally not connected 16 4xin y input of 4x amplifier 17 vcont pll filter connection pin #17 18 filtvdd pll filter connection pin #18 19 vdd reserved. connect to vdd 20 outy y rate signal output voltage (not amplified) 21 nc internally not connected 22 vref reference voltage 23 nc internally not connected 24 hp high-pass filter reset (logic 0: normal operation mode; logic1: external high-pass filter is reset) 25 res reserved. leave unconnected or connect to vdd 26 gnd 0v supply voltage 27 st self-test (see table 6 ) 28 sleep/pd sleep mode / power-down mode (see table 6 ) LPR410AL mechanical and electrical specifications doc id 16573 rev 1 5/14 2 mechanical and electrical specifications 2.1 mechanical characteristics vdd = 3 v, t = 25 c unless otherwise noted (a) a. the product is factory calibrated at 3 v. t he operational power supply range is specified in table 4 . table 3. mechanical characteristics symbol parameter test condition min. typ. (1) max. unit fsa measurement range 4x out (amplified) 100 dps fs out (not amplified) 400 dps soa sensitivity (2) 4x out (amplified) 10 mv/ dps so out (not amplified) 2.5 mv/ dps sodr sensitivity change vs. temperature delta from 25c 0.07 %/c voff zero-rate level (3) 1.5 v vref reference voltage 1.5 v offdr zero-rate level change vs. temperature delta from 25c 0.03 dps/c nl non linearity best fit straight line 1 % fs bw bandwidth (3) 140 hz vst self-test output change 250 (4) mv rn rate noise density 0.014 dps/ hz top operating temperature range -40 +85 c 1. typical specificat ions are not guaranteed. 2. sensitivity and zero-rate level are not ratiometric to supply voltage. 3. the product is capable of measuring angular rates extending from dc to the selected bw. 4. self test typical absolute value. mechanical and electrical specifications LPR410AL 6/14 doc id 16573 rev 1 2.2 electrical characteristics vdd =3 v, t=25 c unless otherwise noted (b) b. the product is factory calibrated at 3 v table 4. electrical characteristics symbol parameter test condition min. typ. (1) max. unit vdd supply voltage 2.7 3 3.6 v idd supply current pd pin connected to gnd 6.8 ma iddsl supply current sleep mode 2.1 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. typical specificat ions are not guaranteed. LPR410AL absolute maximum ratings doc id 16573 rev 1 7/14 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 6 v vin input voltage on any control pin (sleep/pd, st) -0.3 to vdd +0.3 v t stg storage temperature range -40 to +125 c a acceleration 3000 for 0.5 ms g 10000 for 0.1 ms g 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 terminology LPR410AL 8/14 doc id 16573 rev 1 4 terminology 4.1 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. 4.2 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. 4.3 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 exhibits 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. 4.4 high pass filter reset (hp) the LPR410AL 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 recommended each time the device is powered. 4.5 sleep mode, self test and power down the LPR410AL enables advanced po wer-saving features thanks to the availability of three different operating modes. when the device is set in a sleep mode configuration, the reading chain is complete ly turned off, resulting in low po wer consumption. in this condition the device turn-on time is significantly reduced, allowing simple external power cycling. in accordance with the table below, the user can select the desired operating mode using two dedicated pins (st and sleep/pd). LPR410AL terminology doc id 16573 rev 1 9/14 table 6. sleep mode and power down mode configuration operating mode st pin sleep/pd pin normal mode 0 0 power-down 0 1 self-test 1 0 sleep mode 1 1 application hints LPR410AL 10/14 doc id 16573 rev 1 5 application hints figure 3. LPR410AL 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 LPR410AL allows band limiting of the output rate response through the use of an external low-pass filter (recommended) in addition to the embedded low-pass filter (f t = 140 hz). 4xoutx and 4xouty are, respectively, outx and outy amplified output lines, internally buffered to ensure low output impedance. if external low-pass filtering is not applied, it is mandatory to short-circuit pin 1 to pin 5 and pin 16 to pin 20, respectively, when amplified outputs are used. when only a non-amplified output is used (outx/outz), it is recommended to set pin 5 and 16 to a fixed reference voltage (vref). the LPR410AL 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. n & 6 d d ' . $ # 2 # ' . $ ? & $ i g i t a l s i g n a l s ' . $ 6 r e f 4 y p i c a l v a l u e s 2 - / h m # u & ' . $ & ) , 4 6 $ $ x / 5 4 9 & ) , 4 ) . 9 & ) , 4 / 5 4 9 / 5 4 9 . # 4 o p 6 i e w x / 5 4 8 . # . # ( 0 2 e s 3 4 0 $ . # . # . # . # . # & ) , 4 6 $ $ . # . # . # . # 6 # / . 4 & ) , 4 6 $ $ 6 # / . 4 6 d d , 0 2 ! , 4 / 0 6 ) % 7 $ ) 2 % # 4 ) / . / & 4 ( % $ % 4 % # 4 ! " , % ! . ' 5 , ! 2 2 ! 4 % 3 2 k / h m # u & # n & : y : x 6 r e f ' . $ # 2 # 2 2 k / h m # n & t o u & 6 r e f ' . $ 2 e c o m e n d e d , o w p a s s f i l t e r / p t i o n a l ( i g h p a s s f i l t e r # 2 # 2 . o t a m p l i f i e d f i l t e r e d o u t p u t 8 . o t a m p l i f i e d f i l t e r e d o u t p u t 9 ! - v LPR410AL application hints doc id 16573 rev 1 11/14 5.1 output response vs. rotation figure 4. output response vs. rotation 5.2 soldering information the lga package is compliant with the ecopack ? , rohs and ?green? standards. it is qualified for soldering heat resistance in accordance with jedec j-std-020. leave ?pin 1 indicator? unconnected during soldering. land pattern and soldering recommendations are available at www.st.com 3 t e a d y 3 t a t e p o s i t i o n x / 5 4 8 x / 5 4 9 6 / 5 4 8 / 5 4 9 6 0 o s i t i v e r o t a t i o n s a s i n d i c a t e d b y t h e a r r o w s d p s x / 5 4 8 x / 5 4 9 6 3 o ! 6 d p s / 5 4 8 / 5 4 9 6 3 o 6 i n c r e a s e o u t p u t v a l u e o v e r z e r o r a t e l e v e l y x : y : x ! - v package information LPR410AL 12/14 doc id 16573 rev 1 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 is an st trademark. figure 5. lga-28: mechanical data and package dimensions a1 1.1 a2 0. 8 55 a 3 0.200 d1 3 . 8 50 4.000 4.150 e1 4. 8 50 5.000 5.150 l1 3 .75 l2 2.75 n1 0.500 m 0.075 p1 2.200 p2 1.700 t1 0.265 0. 3 25 0. 38 5 t2 0.19 0.250 0. 3 10 d 0.200 k 0.050 h 0.100 lga-2 8 (4x5x1mm) land grid array packa g e 8 1 8 1 3 9 3 a LPR410AL revision history doc id 16573 rev 1 13/14 7 revision history table 7. document revision history date revision changes 29-oct-2009 1 initial release. LPR410AL 14/14 doc id 16573 rev 1 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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