Datasheet ADXRS645 (Analog Devices)

High Temperature, Vibration Rejecting ±2000°/sec Gyroscope Data Sheet ADXRS645 FEATURES GENERAL DESCRIPTION Innovative ceramic vertical mount package can be oriented
The ADXRS645 is a high performance angular rate sensor
for pitch or roll rate response
with excel ent vibration immunity for use in high temperature
Wide temperature range: −40°C to +175°C
environments. The ADXRS645 is manufactured using the
Long life: guaranteed 1000 hours at TA = 175°C
Analog Devices, Inc., patented high volume BiMOS surface-
High vibration rejection over wide frequency
micromachining process with years of proven field reliability.
10,000 g powered shock survivability
An advanced, differential, quad sensor design provides superior
Ratiometric to referenced supply
acceleration and vibration rejection.
5 V single-supply operation
The output signal, RATEOUT, is a voltage proportional to the
Self-test on digital command
angular rate about the axis normal to the package lid. The
Temperature sensor output
measurement range is a minimum of ±2000°/sec, and may be extended to ±5000°/sec with the addition of a single external
APPLICATIONS
resistor. The output is ratiometric with respect to a provided
Down hole measurements for geological exploration
reference supply. Other external capacitors are required for
Extreme high temperature industrial applications
operation.
Severe mechanical environments
A temperature output is provided for compensation techniques. Two digital self-test inputs electromechanically excite the sensor to test proper operation of both the sensor and the signal conditioning circuits. The ADXRS645 is available in a 8 mm × 9 mm × 3 mm, 15-lead brazed lead tri in-line package.
FUNCTIONAL BLOCK DIAGRAM 5V (ADC REF) 100nF 5V ST2 ST1 TEMP VRATIO AV ADXRS645 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
1958- 1 Figure 1.
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Document Outline Features Applications General Description Functional Block Diagram Table of Contents 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 Range Extension Self-Test Function Continuous Self-Test Outline Dimensions Ordering Guide