Active yaw-rate gyro for industrial and automotive rate sensing
The ADXRS646BBGZ: It covers a ±250°/s full-scale range with a sensitivity of 9 mV/°/s, making it suitable for platform stabilization, inertial measurement, and motion control applications that require a direct analog interface. The integrated temperature sensor allows compensation of bias drift over temperature, a practical concern when the gyro shares a PCB with heat-generating power stages.
The 5.75 V supply rail is a single-point fit: the gyro needs a clean analog rail, not a 3.3 V or 5.0 V digital supply. Budget a low-noise LDO for this rail if the system's main supply is noisier than a few millivolts. The analog voltage output at 9 mV/°/s means a ±250°/s full-scale swing produces ±2.25 V around the zero-rate voltage — check that your ADC input range covers that span with headroom. The bandwidth spec of 1 kHz is the mechanical sensor bandwidth, not an electrical filter pole. For most rate-control loops this is adequate; if you need a narrower noise bandwidth, an external low-pass filter on the output pin is straightforward. The 4 mA supply current is modest — the gyro won't dominate the system power budget, but it does set a floor for the LDO's dropout headroom.