FEATURES

Complete rate gyroscope on a single chip

Z-axis (yaw rate) response

High vibration rejection over wide frequency

2000 g powered shock survivability

Self-test on digital command

Temperature sensor output

Precision voltage reference output

Absolute rate output for precision applications

5 V single-supply operation

Ultrasmall and light (< 0.15 cc, < 0.5 gram)

APPLICATIONS

Vehicle chassis rollover sensing

Inertial measurement units

Platform stabilization

GENERAL DESCRIPTION

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

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 (see Figure 4). 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

(see Figure 5).

A precision reference and a temperature output are also

provided 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.