ADXRS300

The ADXRS300 is a complete angular rate sensor (gyroscope) that uses Analog Devices' 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 the same high vol-ume 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 (see Figure 3). A single external resistor can be used to lower the scale factor of ADXRS300. An external capacitor is used to set the bandwidth. Other external capacitors are required for operation (see Figure 4).

A precision reference and a temperature output are also pro-vided for compensation techniques. Two digital self-test inputs electromechanically excite the sensor to test proper operation of both sensors and the signal conditioning circuits. The ADXRS300 is available in a 7 mm * 7 mm * 3 mm BGA chip-scale package.