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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 15807 rev 2 1/12 12 LPY530AL mems motion sensor: dual axis pitch and yaw 300/s analog gyroscope features 2.7 v to 3.6 v single supply operation very extended operating temperature range (-40c to +85c) high stability overtemperature absolute analog 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 pointing devices, remote and game controllers motion control with user interface gps navigation systems industrial and robotics description the LPY530AL is a low-power two-axis micromachined gyroscope able to measure angular rate along pitch and yaw axes. it provides excellent temperature stability and high resolution over extended operating temperature range (-40c to +85c). the LPY530AL has a full scale of 300 /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 continuos 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 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. LPY530AL 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 manufa cturing capability and 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 LPY530AL -40 to +85 lga-16 (5x5x1.5) tray LPY530ALtr -40 to +85 lga-16 (5x5x1.5) tape and reel www.st.com
contents LPY530AL 2/12 doc id 15807 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
LPY530AL block diagram and pin description doc id 15807 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 4xoutx (amplified) x/z low-pass capacitor filter + ? x driving mass demodulator charge amplifier switched 4xoutz (amplified) low-pass capacitor filter + ? z optional filter lp/hp optional filter lp/hp gain gain not amplified not amplified 4x 4x feedback loop + - filtered output x filtered output z (top view) direction of the detectable angular rates gnd vcont filtout z/ out z filtvdd 4xoutx vref filtin z st vdd res filtin x filtout x/ out x hp 16 14 6 8 9 13 1 5 (bottom view) res 4xoutz pd + ? x + ? z
block diagram and pin description LPY530AL 4/12 doc id 15807 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 outx not amplified output 5 4xinx input of 4x amplifier 6 4xoutx x rate signal output voltage (amplified) 7 vref reference voltage 8 4xoutz z rate signal output voltage (amplified) 9 4xinz input of 4x amplifier 10 outz 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
LPY530AL mechanical and electrical specifications doc id 15807 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) 300 /s fs out (not amplified) 1200 /s soa sensitivity (3) 4x out (amplified) 3.33 mv/ /s so out (not amplified) 0.83 mv/ /s sodr sensitivity change vs temperature delta from 25c 0.037 %/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 0.05 /s/c nl non linearity best fit straight line 1 % fs bw bandwidth (4) 140 hz rn rate noise density 0.035 /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 offset ar e not ratiometric to supply voltage 4. the product is capable of measuring angular rates extending from dc to the selected bw. h z
mechanical and electrical specifications LPY530AL 6/12 doc id 15807 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 a acceleration) 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 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
LPY530AL terminology doc id 15807 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 sensible 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. 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 change 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 the mechanical and elec trical 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 th is 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 specification. 3.4 high pass filter reset (hp) LPY530AL provides the possibility to reset the optional external high pass filter by applying high logic value to hp pad. this procedure ensures faster response expecially during overload conditions. moreover, this operation is suggested each time the device is powered.
application hints LPY530AL 8/12 doc id 15807 rev 2 4 application hints figure 3. LPY530AL 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 LPY530AL allows band limiting 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 4xoutz are respectively outx and outz 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 output are used (outx/z), it is suggested to set pads 5 and 9 to fixed reference voltage (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 LPY530AL ic includes a pll (phase locked loop) circuit to synchronize driving and sensing interfaces. capacitors and resistors must be added at filtvdd and vcont pins (as shown in figure 3 ) to implement a low-pass filter. 100 nf 10kohm 470nf vdd gnd hp vref 4xoutx c2 r1 c1 gnd 10 f gnd recomended low-pass filter LPY530AL (top view) 1 16 14 13 9 8 6 5 10nf pd st gnd vref 4xoutz optional high-pass filter vref gnd typical values: c1 r1 c2 r2 c1 r1 c2 r2 r1 = 1mohm c1 = 4.7 uf r2 = 33kohm c2 = 2.2nf to 2.2uf not amplified (top view) direction of the detectable angular rates + ? x + ? z filtered output x not amplified filtered output z
LPY530AL application hints doc id 15807 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 + ? x steady state position: 4xoutx = 4xoutz = 1.23v outx = outz = 1.23v + ? x + ? z + ? z positive rotations as indicated by arrows +300/sec --> 4xoutx, 4xoutz = 1.23v + soa*300 = 2.23v +300/sec --> outx, outz = 1.23v + so*300 = 1.48v increase output value over zero rate level:
package information LPY530AL 10/12 doc id 15807 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
LPY530AL revision history doc id 15807 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
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