The IBG20 gyro platform combines the quality of Sensonor’s Butterfly gyro element production for standard products with full flexibility gyro control in a reconfigurable Xilinx FPGA. Meaning that gyro characteristics and performance can be tailored for specific applications without making new hardware. The proprietary IBG20 gyro platform features noise levels below 0.003 deg/s/sqrt(Hz), an offset stability below 2 deg/hr and rate ranges exceeding 9000 deg/s (with export restrictions).
This gyro system is actually so good it is able to measure the earth rate (15 °/hour), an undisputable quality measure for a gyro. It shows that the gyro has both high resolution (low noise) and high stability. To understand how small this rate is, one can make a comparison with the speed of the hour dial on a watch as it moves with twice the earth rate. All this is achieved with a gyro chip that is only 3x3x2 mm. The IBG20 platform consists of three main elements, Sensonor’s Butterfly gyro element, an Imego proprietary mixed-signal ASIC and a Xilinx FPGA. The block diagram below illustrates their interaction:
The ASIC contains low-noise readout amplifiers and sigma-delta modulators that convert signals to the digital domain. This concept is novel in that the feedback loops are implemented in the digital domain, allowing the sensor to be easily tailored for specific applications. Finally, the use of digital signal processing gives much improved low-frequency noise performance. For more information about what the IBG20 can do for your application, please contact our sales team.
