LY3200ALH MEMS motion sensor: high performance ±2000 dps analog yaw-rate gyroscope Features ■ 2.7 V to 3.6 V single supply operation ■ Wide extended operating temperature range (-40°C to +85°C) ■ High stability over temperature ■ Analog absolute angular-rate output ■ 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 (see Section 6) LGA-10 (3x5x1 mm) The LY3200ALH has a full scale of ±2000 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. Applications ■ Gaming applications ■ Pointing devices, remote and game controllers ■ Motion control with user interface ■ Industrial and robotics Description The LY3200ALH is a high performance low-power single-axis micromachined gyroscope capable of measuring angular rate along yaw axis. It provides excellent temperature stability and high resolution over extended operating temperature range (-40°C to +85°C). Table 1. 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. 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 LY3200ALH 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. Device summary Order code Temperature range (°C) Package Packing LY3200ALH -40 to +85 LGA-10 (3x5x1) Tray LY3200ALHTR -40 to +85 LGA-10 (3x5x1) Tape and reel October 2009 Doc ID 16571 Rev 1 1/13 www.st.com 13 Contents LY3200ALH Contents 1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1 Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 4.1 Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.2 Zero-rate level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.3 Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.4 Sleep mode, self test and power down . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1 Output response vs. rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.2 Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2/13 Doc ID 16571 Rev 1 LY3200ALH 1 Block diagram and pin description Block diagram and pin description Figure 1. Block diagram %3*7*/(."44 &EEDBACKLOOP : Z #(!2'% !-0,)&)%2 37)4#(%$ #!0!#)4/2 ,/70!33 &),4%2 #/.44)-% ,0&),4%2 /54: $%-/$5,!4/2 '.$ 2%&%2%.#% 42)--).' #)2#5)43 0(!3% '%.%2!4/2 #,/#+ !-V 1.1 Pin description Figure 2. Pin connection : Z 6$$ 2%3 4/06)%7 $)2%#4)/./&4(% $%4%#4!",% !.'5,!22!4% 34 6#/.4 '.$ 6$$ 3,%%00$ 6REF 2%3 /54: "/44/-6)%7 !-V Doc ID 16571 Rev 1 3/13 Block diagram and pin description 4/13 LY3200ALH Table 2. Pin description Pin # Pin name 1 Vdd Power supply 2 ST Self-test (see Table 6) 3 VCONT 4 GND 0V supply voltage 5 Res Leave unconnected or connect to Vdd 6 OUTZ 7 Vref 8 SLEEP/PD 9 Vdd Power supply 10 Res Leave unconnected or connect to Vdd Analog function PLL filter connection Z axis output voltage Reference voltage Sleep mode / power-down mode (see Table 6) Doc ID 16571 Rev 1 LY3200ALH Mechanical and electrical specifications 2 Mechanical and electrical specifications 2.1 Mechanical characteristics Vdd = 3 V, T = 25 °C unless otherwise noted (a) Table 3. Symbol FS So Mechanical characteristics Parameter Test condition Measurement range Typ.(1) Voff Zero-rate level(3) 0.67 mV/dps 0.01 %/°C 1.5 V 0.09 dps/°C ±1 % FS 140 Hz Delta from 25°C Zero-rate level change vs. temperature Delta from 25°C NL Non linearity Best fit straight line BW (3) Unit dps Sensitivity Sensitivity change vs. temperature Max. ±2000 (2) SoDr OffDr Min. Bandwidth (4) Vst Self-test output change 400 Rn Rate noise density 0.074 Top Operating temperature range -40 mV dps/√Hz +85 °C 1. Typical specifications are not guaranteed. 2. Sensitivity and zero-rate offset 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. a. The product is factory calibrated at 3 V. The operational power supply range is specified in Table 4. Doc ID 16571 Rev 1 5/13 Mechanical and electrical specifications 2.2 LY3200ALH Electrical characteristics Vdd = 3 V, T = 25 °C unless otherwise noted (b) Table 4. Symbol . Electrical characteristics Parameter Test condition Typ.(1) Max. Unit 2.7 3 3.6 V Vdd Supply voltage Idd Supply current 4.2 mA Supply current sleep mode 2.2 mA 5 µA IddSl IddPdn VST VPD Top Supply current powerdown mode Logic 0 level 0 0.2*Vdd Logic 1 level 0.8*Vdd Vdd Logic 0 level 0 0.2*Vdd Logic 1 level 0.8*Vdd Vdd -40 +85 Self-test input V Power-down input V Operating temperature range 1. Typical specifications are not guaranteed. b. The product is factory calibrated at 3 V 6/13 Min. Doc ID 16571 Rev 1 °C LY3200ALH 3 Absolute maximum ratings 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 Supply voltage Vin Input voltage on any control pin (SLEEP/PD, ST) A Maximum value Unit -0.3 to 6 V -0.3 to Vdd +0.3 V 3000 for 0.5 ms g 10000 for 0.1 ms g -40 to +125 °C 2 (HBM) kV Acceleration TSTG Storage temperature range ESD Electrostatic discharge protection 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 Doc ID 16571 Rev 1 7/13 Terminology LY3200ALH 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 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 Table 3, 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 LY3200ALH enables advanced power-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 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. 8/13 Sleep mode and Power-down mode configuration Operating mode ST pin SLEEP/PD pin Normal mode 0 0 Sleep mode 0 1 Self-test 1 0 Power-down 1 1 Doc ID 16571 Rev 1 LY3200ALH 5 Application hints Application hints Figure 3. LY3200ALH electrical connections and external components values Supply 2.2Ohm SLEEP/PD Vref 100 nF LDO 1 µF OUT Z GND GND 9 10 6 5 TOP VIEW 4 1 GND +Ω z ST 10nF 470nF (TOP VIEW) DIRECTION OF THE DETECTABLE ANGULAR RATE C2 10kOhm C1 R1 GND AM03841v1 Power supply decoupling capacitors should be placed in combination with an LDO regulator (common design practice). The LY3200ALH IC includes a PLL (phase-locked loop) circuit to synchronize driving and sensing interfaces. Capacitors and resistors must be added at VCONT pin 3 (as shown in Figure 3) to implement a low-pass filter. Doc ID 16571 Rev 1 9/13 Application hints 5.1 LY3200ALH Output response vs. rotation Figure 4. Output response vs. rotation +Ω +Ω z z Steady state position Positive rotations, as indicated by the arrow, OUTZ = 1.5V increase output value over zero-rate level: OUTZ= 1.5V + So*2000 = 2.62V AM03842v1 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 10/13 Doc ID 16571 Rev 1 LY3200ALH 6 Package information 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-10: mechanical data and package dimensions A1 1.100 A2 0.855 A3 0.200 D1 2.850 3.000 3.150 E1 4.850 5.000 5.150 L 0.635 L1 4.100 L2 2.200 N1 1.415 N2 1.100 M 0.075 P1 1.300 P2 0.500 T1 0.600 T2 0.700 d 0.200 k 0.050 h 0.100 LGA-10 (3x5x1mm) Land Grid Array Package 8161636A Doc ID 16571 Rev 1 11/13 Revision history 7 LY3200ALH Revision history Table 7. 12/13 Document revision history Date Revision 29-Oct-2009 1 Changes First issue Doc ID 16571 Rev 1 LY3200ALH 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 any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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