ADXRS649 Datasheet | Analog Devices

FEATURES High vibration rejection over wide frequency Ultrafast startup: 3 ms Measurement range extendable to ±50,000°/sec 10,000 g powered shock survivability Ratiometric to referenced supply 5 V single-supply operation Z-axis (yaw rate) response - 40°C to +105°C operation Self-test on digital mand Ultrasmall and light (<0.15 cc, <0.5 gram) Temperature sensor output Ro HS pliant APPLICATIONS Sports equipment Industrial applications Platform stabilization High speed tachometry Fast Starting, ±20,000°/sec Vibration Rejecting Rate Gyro GENERAL DESCRIPTION The ADXRS649 is a plete angular rate sensor (gyroscope) that uses the Analog Devices, Inc., patented high volume Bi MOS surface-micromachining process to make a plete gyro on one chip. An advanced, differential, quad sensor design rejects the influence of linear acceleration, enabling the ADXRS649 to offer rate sensing in harsh environments where shock and vibration are present. The output signal, RATEOUT (B1, A2), is a voltage proportional to the angular rate about the axis normal to the top surface of the package. The output is ratiometric with respect to a provided reference supply. An external capacitor is used to set the bandwidth. The measurement range is extendable to ±50,000°/sec by adding an external resistor. Low power consumption (3.5 m A) enables very low power consumption, and ultrafast startup (3 ms) allows for quick power cycling of the gyro. At 10 samples per second, a pair of CR2032 coin cells can power the ADXRS649 for three months. A temperature output is provided for pensation techniques. Two digital self-test inputs electromechanically excite the sensor to test proper operation of both the sensor and the signal conditioning circuits. The ADXRS649 is available in a 7 mm × 7 mm × 3 mm CBGA chip scale package. FUNCTIONAL BLOCK DIAGRAM 5V (ADC REF) 100n F 5V 100n F AVCC AGND ST2 ST1 SELF-TEST DRIVE AMP MECHANICAL SENSOR TEMP VRATIO 25kΩ 25kΩ AT 25°C AC AMP DEMOD 5V...