High Temperature, Vibration Rejecting ±2000°/sec Gyroscope

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Product Details

The ADXRS645 is a high performance angular rate sensor with excellent vibration immunity for use in high temperature environments. The ADXRS645 is manufactured using the Analog Devices, Inc., patented high volume BiMOS surface-micromachining process with years of proven field reliability. An advanced, differential, quad sensor design provides superior acceleration and vibration rejection.

The output signal, RATEOUT, is a voltage proportional to the angular rate about the axis normal to the package lid. The measurement range is a minimum of ±2000°/sec, and may be extended to ±5000°/sec with the addition of a single external resistor. 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 conditioning circuits. The ADXRS645 is available in a 8 mm × 9 mm × 3 mm, 15-lead brazed lead tri in-line package.


  • Down-hole measurements for geological exploration
  • Extreme high temperature industrial applications
  • Severe mechanical environments

Product Lifecycle

icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits


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EVAL-ADXRS645 Circuit Diagram

Product Details

The EVAL-ADXRS645Z is a simple, compact breakout board that facilitates quick performance evaluation of the high temperature ADXRS645 ±2000°/sec analog output single-axis rate gyroscope. Use this evaluation board to evaluate performance on the bench, over temperature, and to facilitate system integration.

The EVAL-ADXRS645Z has two sets of 5-lead, 0.1 inch pin spaced plated through holes that make electrical connections between the ADXRS645 and the existing system. The EVAL- ADXRS645Z also provides four mounting holes for mechanical attachment of the board to the application.

The dimensions of the EVAL-ADXRS645Z are 1.275 inch × 1.275 inch (32.38 mm × 32.38 mm) with two sets of mounting holes. The outer set of holes is 0.15 inch (3.81 mm) in diameter and arranged in a 1.0 inch × 1.0 inch (25.4 mm × 25.4 mm) square around the center of the printed circuit board (PCB). 

All parts in the Bill of Materials section (including polyimide laminate PCB) are rated for high temperature, 175°C, for short duration testing at elevated temperatures. The assembly has not been qualified for extended use at high temperatures.

The schematic and board layout, as well as the board itself, indicate the pin names for easy identification. For additional information on the pin functions, refer to the ADXRS645 data sheet.

R2 is a solder link jumper that connects VRATIO to the VCC input (see Figure 2) on the board. R2 is installed by default and must be removed if a separate VRATIO is desired.

A resistor can be installed in the R1 footprint to extend the measurement range of the device. Refer to the ADXRS645 data sheet for more information on this feature.

Design Resources

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

ADXRS645 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints



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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.