ADIS16120

Low Noise, Angular Rate Sensor ADIS16120 FEATURES Low noise density, 0.015o/sec/√Hz 300o/sec dynamic range Z-axis, yaw rate response Calibrated offset and sensitivity 320 Hz bandwidth, adjustable 35 ms turn-on time Digital self-test High vibration rejection High shock survivability Embedded temperature sensor output Precision voltage reference output 5 V single-supply operation −40°C to +85°C GENERAL DESCRIPTION The ADIS16120 is a low noise, angular rate sensor (gyroscope) that includes all of the necessary embedded signal conditioning to provide a low noise, analog output over the complete dynamic range of ±300o/sec. Factory calibration provides excellent offset and gain accuracy. The unique design implementation provides superior stability over variations in temperature, voltage, linear acceleration, vibration, and next level assembly. The surfacemicromachining manufacturing technology is the same high volume BiMOS process used by Analog Devices, Inc. for its high reliability automotive sensor products. The output signal, RATEOUT, is a voltage proportional to the angular rate about the axis normal to the top surface of the package. A precision reference and a temperature output are provided for system level calibrations and a digital self-test feature is provided to enable system-level diagnostics. The selftest function electromechanically excites the sensor to verify proper operation. The 35.6 mm × 42.4 mm (plus mounting extensions) package provides the convenience of a standard geometry 24-pin interface and four mounting holes for simple installation. Consult the factory for additional dynamic range and sensitivity options. APPLICATIONS Guidance and control Instrumentation Inertial measurement units (IMU) Stabilization FUNCTIONAL BLOCK DIAGRAM TEMPOUT REFOUT TEMPERATURE SENSOR ADIS16120 FILTER MEMS ANGULAR RATE SENSOR SIGNAL CONDITIONING SENSITIVITY AND OFFSET CALIBRATION RATEOUT COM ST SELF-TEST 05923-001 Figure 1. Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. ADIS16120 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 Thermal Resistance ...................................................................... 4 Rate Sensitive Axis ....................................................................... 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions............................. 5 Typical Performance Characteristics ..............................................6 Theory of Operation .........................................................................8 Setting the Bandwidth ..................................................................8 Self-Test Function .........................................................................8 Applications........................................................................................9 Achieving Optimal Noise Performance .....................................9 Using the ADIS16120 with a Supply-Ratiometric ADC..........9 Second Level Assembly ................................................................9 Outline Dimensions ....................................................................... 11 Ordering Guide .......................................................................... 11 REVISION HISTORY 11/06—Rev. 0 to Rev. A Changes to Specifications Section.................................................. 3 Added Figure 13................................................................................ 8 7/06—Revision 0: Initial Version Rev. A | Page 2 of 12 ADIS16120 SPECIFICATIONS @ TA = 25°C, VCC = 5 V, angular rate = 0°/sec, COUT = 0 μF, ±1 g, unless otherwise noted. Table 1. Parameter SENSITIVITY Dynamic Range2 Initial Over Temperature3 Nonlinearity NULL Initial Null Over Temperature In Run Bias Stability Angle Random Walk Turn-On Time Linear Acceleration Effect Voltage Sensitivity NOISE PERFORMANCE Rate Noise Density4 FREQUENCY RESPONSE 3 dB Bandwidth5 Sensor Resonant Frequency SELF-TEST INPUTS ST RATEOUT Response6 Logic 1 Input Voltage Logic 0 Input Voltage Input Impedance TEMPERATURE SENSOR VOUT at 298 K Max Current Load on Pin Scale Factor OUTPUT DRIVE CAPABILITY Output Voltage Swing Capacitive Load Drive7 2.5 V REFERENCE Voltage Value Load Drive to Ground Load Regulation Power Supply Rejection Temperature Drift POWER SUPPLY Operating Voltage Range Quiescent Supply Current TEMPERATURE RANGE Specified Performance Grade A 1 2 Conditions Clockwise rotation is positive output Full-scale range over specified operating conditions @ 25°C Best fit straight line Min1 ±300 4.95 4.75 Typ Max1 Unit degrees/sec mV/degrees/sec mV/degrees/sec % of FS V V degrees/sec degrees/sec/√Hz ms degrees/sec/g degrees/sec/V degrees/sec/√Hz Hz kHz 5 5 0.04 2.50 0.005 0.9 35 0.05 0.4 0.015 320 14 5.05 5.25 VS = 4.75 V to 5.25 V 1σ, @ 25°C 1σ, @ 25°C Power on to ±0.5°/sec of final value, 80 Hz bandwidth Any axis VCC = 4.75 V to 5.25 V @ 25°C No external capacitance 2.49 2.4 2.51 2.6 0.020 ST pin from Logic 0 to Logic 1 Standard high logic level definition Standard low logic level definition To common 175 3.3 270 365 1.7 3.13 2.50 mV V V kΩ V μA mV/K V pF V μA mV/mA mV/V mV V mA °C Source to common Proportional to absolute temperature IOUT = ±1 mA 0.25 1000 2.45 Source 0 μA< IOUT < 200 μA 4.75 VS to 5.25 VS Delta from 25°C 4.75 IOUT = 0 mA, +5 V, 25°C Temperature tested to max and min specifications –40 50 8.4 VS − 0.25 2.5 150 5 1 5 5.00 95 2.55 5.25 110 +85 All minimum and maximum specifications are guaranteed. Typical specifications are not tested or guaranteed. Dynamic range is the maximum full-scale measurement range possible, including output swing range, initial offset, sensitivity, offset drift, and sensitivity drift at 4.75 V to 5.25 V supplies. 3 Specification refers to the maximum extent of this parameter as a worst-case value of TMIN or TMAX, along with long-term effects. 4 Resulting bias stability is