ADXRS642 Analog Devices, ADXRS642 Datasheet

ADXRS642

Manufacturer Part Number

ADXRS642

Description

Vibration Rejecting Yaw Rate Gyro

Manufacturer

Analog Devices

Datasheet

1.ADXRS642.pdf (10 pages)

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FEATURES

Complete rate gyroscope on a single chip

Z-axis (yaw rate) response

20°/hour bias stability

0.02°/√second angle random walk

High vibration rejection over wide frequency

10,000 g powered shock survivability

Ratiometric to referenced supply

5 V single-supply operation

−40°C to +105°C operation

Self-test on digital command

Ultrasmall and light (<0.15 cc, <0.5 gram)

Temperature sensor output

RoHS compliant

APPLICATIONS

Industrial applications

Inertial Measurement Units

Severe Mechanical Environments

Platform stabilization

Rev. Pr 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.

Preliminary Technical Data

100nF

AGND

PGND

CP1 CP2 CP3 CP4 CP5

DRIVE

AMP

FUNCTIONAL BLOCK DIAGRAM

22nF

CHARGE PUMP

AND VOLTAGE

REGULATOR

ST2

MECHANICAL

SELF-TEST

SENSOR

Figure 1. Block Diagram

ST1

22nF

Vibration Rejecting ±250°/s Yaw Rate Gyro

@ 25°C

100nF

SUMJ

25k

TEMP

AMP

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

GENERAL DESCRIPTION

The ADXRS642 is a complete angular rate sensor (gyroscope)

that uses the Analog Devices, Inc., surface-micromachining

process to make a functionally complete and low cost angular rate

sensor integrated with all of the required electronics on one chip.

The manufacturing technique for this device is a patented high

volume BiMOS process with years of proven field reliability.

The ADXRS642 is an industrial grade gyroscope that is 100%

pin, package, temperature, and function compatible with the

ADXRS622 and ADXRS652 – while offering enhanced

vibration rejection

The output signal, RATEOUT (1B, 2A), is a voltage propor-

tional to angular rate about the axis normal to the top surface

of the package. The measurement range is a minimum of

±250°/s. The output is ratiometric with respect to a provided

reference supply. Other external capacitors are required for

operation.

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 condi-

tioning circuits. The ADXRS642 is available in a 7 mm × 7 mm ×

3 mm BGA chip-scale package.

OUT

25k

RATIO

(ADC REF)

180k ±1%

3 to 5V

RATEOUT

VGA

ADXRS642

100nF

DEMOD

08820-001

ADXRS642

www.analog.com

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