Datasheet ADXRS642 (Analog Devices)

Vibration Rejecting ±250°/s Yaw Rate Gyroscope Data Sheet ADXRS642 FEATURES GENERAL DESCRIPTION Complete rate gyroscope on a single chip
The ADXRS642 is a complete angular rate sensor (gyroscope)
Z-axis (yaw rate) response
that uses the Analog Devices, Inc., surface-micromachining
20°/hour bias stability
process to make a functionally complete and low cost angular rate
0.02°/√second angle random walk
sensor integrated with al of the required electronics on one chip.
High vibration rejection over a wide frequency
The manufacturing technique for this device is a patented high
10,000 g powered shock survivability
volume BiMOS process with years of proven field reliability.
Ratiometric to referenced supply
The ADXRS642 is an industrial grade gyroscope that is 100%
5 V single supply operation
pin, package, temperature, and function compatible with the
−40°C to +105°C operation
ADXRS622 and ADXRS652, while offering enhanced vibration
Self-test on digital command
rejection
Ultrasmall and light (<0.15 cc, <0.5 gram) Temperature sensor output
The output signal, RATEOUT (1B, 2A), is a voltage propor-
RoHS compliant
tional to angular rate about the axis normal to the top surface of the package. The measurement range is a minimum of
APPLICATIONS
±250°/s. The output is ratiometric with respect to a provided reference supply. Other external capacitors are required for
Industrial applications
operation.
Inertial measurement units Severe mechanical environments
A temperature output is provided for compensation techniques.
Platform stabilization
Two digital self-test inputs electromechanically excite the sensor to test proper operation of both the sensor and the signal condi- tioning circuits. The ADXRS642 is available in a 7 mm × 7 mm × 3 mm BGA chip-scale package.
FUNCTIONAL BLOCK DIAGRAM 3V TO 5V (ADC REF) 100nF 5V ST2 ST1 TEMP VRATIO AV ADXRS642 CC 100nF SELF-TEST 25kΩ 25kΩ @ 25°C AGND DEMOD DRIVE MECHANICAL AC VGA AMP SENSOR AMP 5V 180kΩ ±1% VDD CHARGE PUMP AND VOLTAGE 100nF REGULATOR PGND CP1 CP2 CP3 CP4 CP5 SUMJ RATEOUT 100nF
001
22nF 22nF COUT
09770- Figure 1.
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Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications Absolute Maximum Ratings Rate Sensitive Axis ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Setting Bandwidth Temperature Output and Calibration Supply Ratiometricity Modifying the Measurement Range Null Adjustment Self-Test Function Continuous Self-Test Mechanical Performance Outline Dimensions Ordering Guide