NVE TMR Smart Angle Sensors beat Melexis, Infineon, and
Allegro
on Sensitivity, Power, and Size NVE offers the only world’s only smart tunneling magnetoresistance (TMR) angle sensors. These feature-rich products are smaller, lower power, and faster than competitive products from Melexis, Allegro, and Infineon. NVE’s sensors also operate at lower fields so smaller magnets and larger standoff distances can be used for a wider set of applications.
Smaller Package Size Preserves Precious Board Area NVE’s ASR00x parts are a quarter of the size of competitive angle sensor products. This allows them to fit in tighter spaces and on smaller and less expensive circuit boards. Lower Power for Less Drift and More Applications NVE’s ASR products use less than one-sixth of the power of competing parts while maintaining higher speed, competitive accuracy, and a full suite of programmable features. Low power makes them ideal for battery-powered automotive and embedded electronics applications, and less self-heating means less temperature drift and more accuracy. Lower Operating Fields for Smaller, Less Expensive Magnets and Larger Air Gaps NVE’s TMR sensor technology is more sensitive than Hall and GMR materials used in competing products. The ASR001 and ASR002 operate at lower fields so that smaller, less expensive ferrite magnets can be used, and larger air gap applications in robotics and industrial automation are supported. The sensors are more accurate at the low fields found in practical applications, and more tolerant of airgap variation and axial wobble. ASR002 is Faster than Competitors Higher accuracy measurements are possible for high speed rotational systems with the ASR002 compared to Melexis and Infineon. In addition to its fast update rate, the ASR002’s streamlined interface allows faster microcontroller interfaces. Better Calibration for More Accuracy The ASR001 has the most versatile output mapping engine in the industry, able to map the sensor output to virtually any waveform. Melexis’s remapping engine is able to only map positive slope linear waveforms. Infineon uses a basic look-up table, and Allegro’s remapping algorithm is limited to awkward sinusoidal waveforms. Better calibration means better application accuracy. Practical Accuracy ASR00x sensors are accurate and conservatively specified, and published accuracy is only part of the story. Low-field tolerance, mechanical latitude, negligible self-heating, and the ASR001’s better calibration mean better accuracy in practice. Versatile Feature Set NVE has programmable filters, multiple outputs (analog, digital, and PWM) and industry standard parameters for angular offset, direction, customer lock, and ID programmable parameters. The ASR002 has a streamlined base feature set and a microcontroller core for added versatility and customization. Simple Operation and Implementation NVE uses common industry standard communication protocols like I²C and SPI rather than more obscure SENT and proprietary PWM digital communications found in Infineon and Allegro angle sensors. That allows faster software development, verification, and validation using the I²C and SPI hardware and software support in most microcontrollers. NVE’s clocked interfaces are more reliable without the risk of losing synchronization. Computationally-intensive CRC isn’t needed. Simple address queries to retrieve angle information rather than more complicated command-based reads reduce microcontroller overhead and increase speed. <Questions or Comments> |
