www.davidson.com.au - PCB Modally Tuned Impact Hammers

Features
- Resistance against external shock/vibrations.
- Wide range of operating temperature(-40 to +85 deg C)
- Low drift
- High reliability
- ASIC driven silicon micro machined resonator
Applications
- Automotive Yaw Rate Sensor
- Global Positioning System (GPS) Dead-reckoning
- Fluxgate Compass compensation
- In-Car Navigation Systems
- Mobile dish antenna stabilized platform
- Mobile camera platform stabilisation
- Robotics
- Simulators
- Telematics / Fleet-management
- Remote Control Vehicles
- Dynamic measurement units
- Drive safety recorder (blackbox for car/marine)
- AGV, wheelchair
- Marine Satellite Compasses
- Angle Wrench
- Agricultural Tractors
- Physiotherapy / therapeutic Equipment
- 3-D input devices

Operating Principle
- A vibration is exerted to the silicon ring at ring's resonating frequency (Mode 1). ;
- Rotational motion produces Corioli's forces which couple vibration to a point 45 degrees relative to the driven axis (Mode 2).
- Monitoring the mode-1 null point (node) in the mode-2 gives a direct measure of applied angular rate.
- The above vibratory modes are unlikely to occur by external shock/vibrations, hence the rate gyroscope can maintain consistent performance in harsh environments.

Characteristics

Analog DC output at 2.5Vdc centre, varies proportional to the applied angular velocity (rate of turn).


Gyro Version	CRS03-02	CRS03-04	CRS03-11
Rate Range	+/- 100 deg/sec	+/-200 deg/sec	+/-573 deg/sec
Operating Temperature	-40 to +85 C	-40 to +85 C	-20 to +60 C
Output Scale Factor*	20mV/(deg/sec)	10mV/(deg/sec)	3.49mV/(deg/sec)
SF variation over temp.	+/- 3%	+/- 3%	+/-5%
Bias	50% of Vdd	50% of Vdd	50% of Vdd
Bias variation over temp	+/- 60mV	+/-60mV	+/-100mV
Bias Initial error	+/- 60mV	+/-60mV	+/-100mV
Cross axis sensitivity	1%	1%	1%
Non linearity	< 0.5%FS	< 0.5%FS	< 0.5%FS
Bandwidth (-3dB, -90deg)	10 Hz	10 Hz	50 Hz
Dimensions (without projections)	29 x 18 x 29 mm with casing	29 x 18 x 29 mm with casing	27 x 13 x 27 mm bare PC board
Quiescent noise	<1mVrms (3Hz to 10Hz)	<1mVrms (3Hz to 10Hz)	<1mVrms 3Hz to 10Hz
Power Vdd	5VDC +/-250mV	5VDC +/-250mV	5VDC +/-250mV
Current dissipation	not more than 50mA	not more than 50mA	not more than 50mA

*Ratiometric example with the supplied VOLTAGE at 5.00Vdc Above are typical values. See spec sheet for details. Current at initialisation is 100mA (0.5sec)