The rotational position detection scheme based on anisotropic magnetoresistance (AMR) effect is gradually replacing the traditional Hall effect devices and is widely used in high-reliability scenes such as industrial servo, automotive electronics and robot joints. The VCE2755/2758 series magnetic encoder chips introduced in this paper are designed to meet this kind of demand. AMR sensor and signal conditioning CMOS circuit are integrated in a single small form factor package to form a complete angle measurement front end.
1. Introduction of Magnetic Encoder Chip
VCE2755/2758 is a rotary magnetic encoder chip based on anisotropic magnetoresistive (AMR) technology. This series of magnetic encoder chips integrate high-precision CMOS processing circuits to realize the integrated integration of sensing unit and computing unit. The miniaturized packaging structure can meet the installation requirements of various compact devices. Multiple intelligent calibration algorithms are built into the chip, covering functions such as temperature compensation, amplitude compensation, Offset deviation correction and nonlinear angle error compensation, which can effectively avoid the detection error caused by the working environment from the hardware operation level and greatly improve the accuracy and stability of angle detection.
2. Characteristics of Magnetic Encoder Chip
VCE2755/2758, a magnetic encoder chip, can realize 360-degree all-angle detection without dead angle. It is equipped with 14bit ultra-high resolution, and the angle acquisition data is accurate and delicate. At the same time, it has an ultra-wide industrial working temperature range, which can stably adapt to the complex environment of -40℃~125℃. Relying on the characteristic of saturated working mode of AMR technology, the magnetic encoder chip is insensitive to the fluctuation of magnetic field strength, and has excellent anti-vibration and anti-temperature drift ability, which perfectly adapts to harsh working scenes such as industry and vehicle, and avoids the problems that conventional chips are vulnerable to environmental interference and data drift.
3. Model of magnetic encoder chip
The high-precision magnetic encoder chip introduced this time includes a variety of subdivided models, which comprehensively covers different installation and equipment requirements, and can adapt to various installation methods such as side shaft installation and hollow installation, and is compatible with different equipment structural designs. Magnetic encoder chip model:
① magnetic encoder chip VCE2755S
② magnetic encoder chip VCE2758S.
③ Magnetic encoder chip VCE2755Q
④ Magnetic encoder chip VCE2758Q
⑤ Magnetic encoder chip VCE2765
With excellent comprehensive performance, this series of magnetic encoder chips have a wide range of application scenarios. The hollow adapter model can match the hollow motor, which is mostly used in automation equipment such as mechanical arm and drum motor. Conventional models can be adapted to industrial control equipment such as stepping motors, servo motors and industrial sewing machines; At the same time, it can be used in automobile chassis and body control system, as the core device of steering angle sensor, body height sensor and wiper drive sensing, and it is a high-quality sensing solution in the field of industrial automation and on-board intelligent control.
Shenzhen Ramsun Microelectronics Co.,Ltd（Ramsun International） is a vendor of the seimicondutor componets and the memory IC’s solution with clear market advantage. We still focus on the promotion for some famous semicondutor brand ,and specially take the RAM(Random Access Memory) as our core products.
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