LY330ALHTR

LY330ALH MEMS motion sensor: high performance ±300 dps analog yaw-rate gyroscope 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 levels of integration and production trimming to better match sensing element characteristics. LGA-10 (3x5x1 mm) 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. The LY330ALH is available in a plastic land grid array (LGA) package, which ST successfully pioneered for accelerometers. Today ST has the widest manufacturing capability and strongest expertise in the world for production of sensors in plastic LGA packages. Table 1: Device summary Order code Temperature Package range (°C) LY330ALH -40 to +85 LGA-10 (3x5x1) LGA-10 (3x5x1) Packing Tray Tape and reel 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 Integrated low-pass filters Low power consumption Sleep mode Embedded power-down Embedded self-test High shock and vibration survivability ® ECOPACK RoHS and “Green” compliant • • • • • • • • • • • • • • • Applications Pointing devices, remote and game controllers Motion control with user interface GPS navigation systems Industrial and robotics Description The LY330ALH is a high performance low-power single-axis micro-machined gyroscope capable of measuring angular rate along the yaw axis. It provides excellent temperature stability and high resolution over extended operating temperature range (-40 °C to +85 °C). The LY330ALH has a full scale of ±300 dps and is capable of detecting rates with a -3 dB bandwidth up to 140 Hz. LY330ALHTR -40 to +85 February 2010 DocID16568 Rev 2 1/16 www.st.com Contents LY330ALH Contents 1 Block diagram ..........................................................................................................5 2 Pin description .........................................................................................................6 3 Mechanical and electrical characteristics .............................................................7 3.1 Mechanical characteristics ............................................................................................7 3.2 Electrical characteristics ................................................................................................8 3.3 Absolute maximum ratings ............................................................................................8 4 Terminology ............................................................................................................10 4.1 4.2 4.3 4.4 Sensitivity ....................................................................................................................10 Zero-rate level .............................................................................................................10 Self-test .......................................................................................................................10 Sleep mode, self-test and power-down .......................................................................10 5 Application hints ....................................................................................................11 5.1 Output response vs. rotation .......................................................................................12 5.2 Soldering information ...................................................................................................12 6 Package information .............................................................................................13 6.1 LGA-10 package mechanical data ..............................................................................13 7 Revision history .....................................................................................................15 2/16 DocID16568 Rev 2 LY330ALH List of tables List of tables Table 1. Device summary .........................................................................................................................1 Table 2. Pin description ............................................................................................................................6 Table 3. Mechanical characteristics @ Vdd = 3 V, T = 25 °C unless otherwise noted .............................7 Table 4. Electrical characteristics @ Vdd =3 V, T=25 °C unless otherwise noted ...................................8 Table 5. Absolute maximum ratings .........................................................................................................8 Table 6. Sleep mode, self-test and power-down mode configuration ....................................................10 Table 7. LGA-10 (3x5x1 mm) package dimensions ...............................................................................13 Table 8. Document revision history ........................................................................................................15 DocID16568 Rev 2 3/16 List of figures LY330ALH List of figures Figure 1. Block diagram .........................................................................................................................11 Figure 2. Pin connection ..........................................................................................................................6 Figure 3. Electrical connections and external component values ..........................................................11 Figure 4. Steady state position ..............................................................................................................12 Figure 5. Output response vs. rotation ...................................................................................................12 Figure 6. LGA-10 (3x5x1 mm) mechanical data ....................................................................................13 4/16 DocID16568 Rev 2 LY330ALH Block diagram 1 Block diagram Figure 1: Block diagram DRIVING MASS Fe edback loop +Ω z + CHARGE AMPLIFIER SWITCHED CAPACITOR LOW-PASS FILTE R CONT. TIME LP FILT ER OUT Z - DEMODULATO R GND REFERENCE TRIMMING CIRCUITS CLOCK PHASE GENERATOR AM03839v1 DocID16568 Rev 2 5/16 Pin description LY330ALH 2 Pin description Figure 2: Pin connection +Ω z Vdd ST VCONT GND 1 RES 4 5 6 OUTZ RES 10 9 (TOP VIEW) DIRECTION OF THE DETECTABLE ANGULAR RATE Vdd SLEEP/PD Vref (BOTTOM VIEW) AM03840v1 Table 2: Pin description Pin # 1 2 3 4 5 6 7 8 9 10 Pin name Vdd ST VCONT GND Res OUTZ Vref SLEEP/PD Vdd Res Analog function Power supply Self-test (see "Sleep mode, self test and power-down mode configuration" table) PLL filter connection 0 V supply voltage Leave unconnected or connect to Vdd Z axis output voltage Reference voltage Sleep mode / power-down mode (see "Sleep mode, self test and power-down mode configuration" table) Power supply Leave unconnected or connect to Vdd 6/16 DocID16568 Rev 2 LY330ALH Mechanical and electrical characteristics 3 3.1 Mechanical and electrical characteristics Mechanical characteristics Table 3: Mechanical characteristics @ Vdd = 3 V, T = 25 °C unless otherwise noted (1) Symbol FS So SoDr Parameter Measurement range Sensitivity (2) Test condition Min. Typ. Max. Unit dps mV/dps %/°C ±300 3.752 Delta from 25°C 0.01 Sensitivity change vs. temperature Zero-rate (3) level Voff OffDr 1.5 0.02 V dps/°C Zero-rate Delta from level change 25°C vs. temperature Non linearity Bandwidth Self-test output change Rate noise density Operating temperature range -40 (3) NL BW Vst Best fit straight line ±1 140 400 (4) % FS Hz mV Rn Top 0.014 85 dps / √Hz °C (1) (2) (3) (4) Typical specifications are not guaranteed. Sensitivity and zero-rate level are not ratiometric to supply voltage. The product is capable of measuring angular rates extending from DC to the selected BW. Self test typical absolute value. Note: The product is factory calibrated at 3 V. The operational power supply range is specified in the Electrical characteristics table. DocID16568 Rev 2 7/16 Mechanical and electrical characteristics LY330ALH 3.2 Electrical characteristics Table 4: Electrical characteristics @ Vdd =3 V, T=25 °C unless otherwise noted (1) Symbol Vdd Idd IddSl IddPdn Vst Parameter Supply voltage Supply current Supply current sleep mode Supply current in power-down mode Self-test input Test condition Min. 2.7 Typ. 3 4.2 2.2 5 Max. 3.6 Unit V mA mA µA Logic 0 level Logic 1 level 0 0.8*Vdd 0 0.8*Vdd -40 0.2*Vdd Vdd 0.2*Vdd Vdd +85 V Vpd Power-down input Logic 0 level Logic 1 level V Top Operating temperature range °C (1) Typical specifications are not guaranteed Note: The product is factory calibrated at 3 V. 3.3 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. Table 5: Absolute maximum ratings Symbol Ratings Vdd Vin A Supply voltage Maximum value -0.3 to 6 Unit V V g g Input voltage on any control pin (Sleep/PD, -0.3 to Vdd +0.3 ST) Acceleration 3000 for 0.5 ms 10000 for 0.1 ms 8/16 DocID16568 Rev 2 LY330ALH Mechanical and electrical characteristics Symbol Ratings TSTG ESD Storage temperature range Electrostatic discharge protection Maximum value -40 to +125 2 (HBM) Unit °C 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. DocID16568 Rev 2 9/16 Terminology LY330ALH 4 4.1 Terminology 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 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. 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 and by the electrostatic test-force. If the output signals change within the amplitude specified in the Mechanical characteristics table, then the mechanical element is working properly and the parameters of the interface chip are within the defined specifications. 4.4 Sleep mode, self-test and power-down The device enables advanced power-saving features thanks to the availability of three different operating modes. In addition to standard normal mode and Power-down mode, when the device is set in a sleep mode configuration, the reading chain is completely turned off, resulting in low power 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). Table 6: Sleep mode, self-test and power-down mode configuration Operating mode Normal mode Sleep mode Self-test Power-down ST pin 0 0 1 1 SLEEP/PD pin 0 1 0 1 10/16 DocID16568 Rev 2 LY330ALH Application hints 5 Application hints Figure 3: Electrical connections and external component values Supply 2.2Ohm 1 µF LDO GND 100 nF SLEEP/PD Vref O UT Z GND 9 10 1 +Ω 6 TOP VIEW 5 4 GND z ST 10nF 470nF C2 10kOhm (TO P VIEW) DIRECTION OF THE DETECTA BLE ANGULAR RATE C1 R1 GND AM03841v1 Power supply decoupling capacitors should be placed in combination with an LDO regulator (common design practice). The device IC includes a PLL (phase-locked loop) circuit to synchronize driving and sensing interfaces. Capacitors and resistor must be added at VCONT pin 3 (see figure above) to implement a low-pass filter. DocID16568 Rev 2 11/16 Application hints LY330ALH 5.1 Output response vs. rotation Figure 4: Steady state position +Ω z Note: OUTZ = 1.5 V Figure 5: Output response vs. rotation +Ω z Note: Positive rotations as indicated by arrows increase output value over zero-rate level: OUTZ= 1.5 V + SoA*300 = 2.62 V 5.2 Soldering information The LGA package is compliant with the ECOPACK , RoHS and "Green" standard. It is qualified for soldering heat resistance according to JEDEC J-STD-020. Leave "pin 1 indicator" unconnected during soldering. Land pattern and soldering recommendations are available at www.st.com. ® 12/16 DocID16568 Rev 2 LY330ALH Package information 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. 6.1 LGA-10 package mechanical data Figure 6: LGA-10 (3x5x1 mm) mechanical data 8161636B Table 7: LGA-10 (3x5x1 mm) package dimensions Ref. Min. A1 A2 A3 D1 E1 L L1 L2 N1 2.850 4.850 0.855 0.200 3.000 5.000 0.635 4.035 2.200 1.382 3.150 5.150 Typ. Dimensions mm Max. 1.100 DocID16568 Rev 2 13/16 Package information LY330ALH Ref. Min. N2 M P1 P2 T1 T2 T3 d k h Typ. Dimensions mm Max. 1.100 0.100 1.300 0.500 0.600 0.700 0.635 0.200 0.050 0.100 14/16 DocID16568 Rev 2 LY330ALH Revision history 7 Revision history Table 8: Document revision history Date 29-Oct-2009 19-Feb-2010 Revision 1 2 Changes Initial release. Minor text changes and updated package information. DocID16568 Rev 2 15/16 LY330ALH 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 herein at anytime, 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 assumes 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. If 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 whatsoever 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 PARTICULAR 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 MILITARY, 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 "AUTOMOTIVEGRADE" 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 voidany warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, 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. © 2010 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom United States of America www.st.com 16/16 DocID16568 Rev 2