ADI ADXRS646BBGZ

The ADXRS646 is a high performance angular rate sensor (gyroscope) that offers excellent vibration immunity. Bias stability is a widely-recognized figure of merit for high performance gyroscopes, but in real-world applications, vibration sensitivity is often a more significant performance limitation and should be considered in gyroscope selection. The ADXRS646 offers superior vibration immunity and acceleration rejection as well as a low bias drift of 12°/hr (typical), enabling it to offer rate sensing in harsh environments where shock and vibration are present. The ADXRS646 is manufactured using the patented high volume BiMOS surface-micromachining process. An advanced, differential, quad sensor design provides the improved acceleration and vibration rejection. The output signal, RATEOUT, is a voltage proportional to angular rate about the axis normal to the top surface of the package. The measurement range is a minimum of ±250°/sec. 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 ADXRS646 is available in a 7mm×7mm×3mm CBGA chip-scale package.

• 12°/hr bias stability
• Z-axis (yaw rate) response 0.01°/sec
• angle random walk
• High vibration rejection over wide frequency
• Measurement range extendable to a maximum of ±450°/sec
• 10,000g powered shock survivability
• Ratiometric to referenced supply
• 6V single-supply operation
• -40°C to +105°C operation
• Self-test on digital command
• Ultrasmall and light (< 0.15cc, < 0.5 gram)
• Temperature sensor output
• Complete rate gyroscope on a single chip
• RoHS compliant

• Industrial applications
• Severe mechanical environments
• Platform stabilization