A1308KUA-1-T

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Linear magnetic sensors can be found in a variety of applications, including navigation and auto-correction systems. A1308KUA-1-T is a linear magnetic sensor IC manufactured by Allegro Microsystems that is suited for both automotive and indoor navigation applications. It is designed to accurately measure magnetic fields generated by stepper motor commutation tracks, hall effect sensors, and compass heading on a variety of consumer electronic devices. Additionally, the device also incorporates dynamic error compensation for enhanced accuracy in motion. This article will focus on the A1308KUA-1-T and its application in field, working principle, and technical features.

Application Field

The A1308KUA-1-T linear magnetic sensor IC is intended for low to medium complexity applications. These applications include steering angle sensing in autos, robotic positioning systems, indoor navigation, and curvilinear motion correction systems. The device is optimized for high-sensitivity dual-axis linear magnetic sensing, allowing it to detect even the most subtle magnetic fields. Additionally, the device is able to accurately measure magnetic fields generated by stepper motor commutation tracks and create near-absolute position readings. The device is also ideal for sensing hall effect sensors, compass headings, and unidirectional motion detection.

Working Principle

The A1308KUA-1-T is an integrated circuit designed to accurately measure soft- and hard-magnetic fields in two axes. This device operates on an inductive sensing principle where two separate sensing elements are contained on one chip. The sensors are sensitive enough to detect even the most low-level magnetic fields with a high degree of accuracy. The device also incorporates dynamic error compensation for increased accuracy in motion. In short, the device works by detecting changing magnetic fields, with the two sensing elements providing the chip with two complementary signals. These two signals are processed and combined to provide the IC with a single output.

Technical Features

The A1308KUA-1-T designed with a complete set of features intended to improve performance in real-world applications. These include differential input stages for temperature and supply voltage compensation, integrated linearity of up to 0.08%, temperature compensation of up to -1.5%/K for maximum accuracy, boost gain circuitry to increase signal, noise immunity, and suppression of line noise. The device also comes equipped with several output protection features including voltage and current overload protection, short-circuit protection, and reverse current protection. The device is also designed for minimal external component count, with the pinout being easily convertible between single- and dual-channel modes.

Conclusion

The A1308KUA-1-T linear magnetic sensor IC is designed to provide high resolution, accuracy, and precision in a variety of applications. Its dual-axis linear sensing capabilities are well-suited for work in automotive, robotic, and indoor navigation-related applications. Additionally, the device features a variety of technical features, including temperature and power supply compensation, dynamic error compensation, and overload protection. With its reliable and high-precision operation, the A1308KUA-1-T is a reliable and cost-effective solution for a variety of linear magnetic sensing applications.

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