ADXRS612 Datasheet | Analog Devices

FEATURES plete rate gyroscope on a single chip Z-axis (yaw rate) response High vibration rejection over wide frequency 2000 g powered shock survivability Ratiometric to referenced supply 5 V single-supply operation 105°C operation Self-test on digital mand Ultrasmall and light (<0.15 cc, <0.5 gram) Temperature sensor output Ro HS pliant GENERAL DESCRIPTION The ADXRS612 is a plete angular rate sensor (gyroscope) that uses the Analog Devices, Inc. surface-micromachining process to make a functionally plete and low cost angular rate sensor integrated with all of the required electronics on one chip. The manufacturing technique for this device is the same high volume BIMOS process used for high reliability automotive airbag accelerometers. The output signal, RATEOUT (1B, 2A), is a voltage proportional to angular rate about the axis normal to the top surface of the package. The output is ratiometric with respect to a provided reference supply. A single external resistor can be used to lower the scale factor. An external capacitor is used to set the bandwidth. Other external capacitors are required for operation. 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 ADXRS612 is available in a 7 mm × 7 mm × 3 mm BGA chip-scale package. APPLICATIONS Vehicle chassis rollover sensing Inertial measurement units Platform stabilization FUNCTIONAL BLOCK DIAGRAM +5V (ADC REF) 100n F +5V AVCC 100n F AGND ST2 ST1 TEMP VRATIO 25kΩ SELF-TEST 25kΩ @ 25°C DEMOD DRIVE AMP MECHANICAL SENSOR AC AMP +5V 180kΩ ±1% CHARGE PUMP AND VOLTAGE REGULATOR CP1 CP2 CP3 CP4 CP5 SUMJ 100n F 22n F 22n F COUT RATEOUT 06521-001 100n F PGND Figure 1. Rev. 0 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...