Magnetic Technology Empowers High-Precision Control: Magntek MT6835 Magnetic Encoder Leads the Revolution in the Electronics Industry

In modern electronic and automation systems, precise position sensing is the core of achieving efficient and stable operation. Especially in fields such as motor control, industrial servos, and precision instruments, the angle encoder, acting as the "eye that perceives rotation," directly determines a system's response speed, positioning accuracy, and long-term reliability. While traditional optical encoders are widely used, their limitations in stability under harsh environments, installation complexity, and cost are becoming increasingly apparent. Today, with the rapid development of magnetic sensing technology, a smarter, more reliable, and higher-performance alternative is emerging: the high-precision magnetic angle encoder IC based on AMR (Anisotropic Magneto-Resistance) technology—the Magntek MT6835.

I. Why Choose a Magnetic Encoder? Addressing the Pain Points 

In practical engineering applications, many customers face the following challenges:

1. Optical encoders are susceptible to dust, oil, and vibration, leading to signal distortion or failure.

2. Installation alignment requirements are extremely high; minute air gap deviations or magnet eccentricity can cause measurement errors.

3. Maintaining stable resolution and low-latency output at high rotational speeds is difficult.

4. Diverse interface requirements coexist, and traditional solutions have poor compatibility.

The MT6835 was born precisely to solve these industry pain points. It not only inherits the inherent advantages of magnetic sensors—resistance to contamination and vibration—but also achieves performance that matches or even surpasses high-end optical encoders through technological innovation.

II.  Core Advantages of the MT6835: High Precision, High Speed, High Flexibility

1. 21-bit Ultra-High Resolution, Accuracy within ±0.07° Utilizing advanced AMR technology, the MT6835 enables continuous detection of absolute angles from 0° to 360°. With a core resolution of 21 bits, combined with a unique signal processing algorithm, it achieves excellent Integral Non-Linearity (INL) of < ±0.07° over the full temperature range, meeting the demands of high-end servo systems for capturing minute angular changes.

2. Supports Speeds up to 120,000 RPM, Response Delay of Only 2–10 µs Thanks to the physical properties of the AMR element and dedicated ASIC design, the MT6835 operates stably in extreme high-speed scenarios, supporting rotation speeds up to 120,000 RPM with an output delay as low as 2 microseconds. This far exceeds the practical usable range of most optical encoders, making it especially suitable for high-frequency applications like drone motors, high-speed spindles, and power tools.

3. Multiple Output Modes, Flexible Adaptation to Various Control Systems The MT6835 provides multiple standard industrial interfaces, truly achieving "one chip for multiple uses":

This multi-protocol co-existing design allows the MT6835 to seamlessly replace existing optical encoders while reserving upgrade potential for next-generation intelligent devices.

4. Client-Side Self-Calibration Technology, Easily Handling Installation Errors This is one of the MT6835's most innovative features. Inevitable issues in practical applications, such as magnet machining tolerances and assembly eccentricity, often require complex external compensation algorithms for traditional sensors. The MT6835, however, features a built-in automatic non-linear calibration mode. By simply activating the CAL_EN pin, the chip can automatically perform non-linear error analysis and compensation without host intervention, storing the results in its internal EEPROM. The entire process requires no data interaction or additional software development, greatly simplifying production line debugging and significantly improving product consistency and yield.

5. Wide Voltage and Temperature Operating Range, Adapting to Harsh Environments 

l Operating Voltage: Configurable 3.3V ~ 5.0V, compatible with various power architectures.

l Operating Temperature: -40°C ~ +125°C, suitable for high or low-temperature environments like automotive electronics and industrial sites.

l Strong anti-interference capability, unaffected by humidity, oil, or minor impacts, with a lifespan far exceeding that of optical products.

III. Wide Range of Applications, Driving Industry Innovation

 With its high performance and reliability, the MT6835 has demonstrated strong applicability in multiple fields:

· Brushless DC (BLDC) Motor Control: Provides accurate rotor position feedback, supports sine wave drive and FOC vector control, improving energy efficiency and operational smoothness.

· Servo Motors and Closed-Loop Stepper Systems: 21-bit resolution combined with low-latency output enables nano-level positioning control, widely used in high-end equipment like CNC machine tools and robotic joints.

· Industrial Automation Sensor Modules: Can serve as standalone absolute angle sensors for applications like valve opening detection and robotic arm posture sensing.

· Replacement for Traditional Optical Encoders: In harsh environments with dust, moisture, and vibration, the MT6835 demonstrates greater robustness, reducing maintenance costs and improving system availability.

IV. Complete Solution, Easy Integration 

The MT6835 comes in a standard TSSOP-16 package. It provides a complete SPI communication protocol description, supporting functions like single-byte read/write, continuous angle reading, and EEPROM programming. It also features built-in programmable register groups, allowing flexible configuration of output modes, zero position, pole pairs, and other parameters via SPI. The one-touch zero-setting function enables users to quickly define a mechanical zero point on-site. Its magnet installation requirements are lenient; a radially magnetized ring magnet is recommended, and it offers large axial air gap tolerance, effectively reducing assembly difficulty.

V. Conclusion: Redefining the Future of Position Sensing 

The Magntek MT6835 is more than just an angle encoder IC; it is a model of deep integration between magnetic sensing technology and intelligent algorithms. Based on AMR technology, centered on self-calibration, and bridged by multiple interfaces, it provides electronics industry customers with a new solution characterized by high precision, high reliability, and ease of deployment. Whether for high-end manufacturing pursuing ultimate performance or cost-effective batch applications, the MT6835 is up to the task. It is redefining the boundaries of "position sensing" and propelling more intelligent devices towards miniaturization, integration, and localization. As an authorized technical partner, MANDU provides comprehensive support for the application of Magntek encoder solutions, including product selection, system integration guidance, sample provision, and localized technical services, helping customers accelerate product development and deployment.

About Mandu Technology

Shenzhen Mandu Technology Co., Ltd. has steadfastly centered its operations on the distribution of high-performance, high-quality, and highly reliable integrated circuit products. Its portfolio encompasses memory chips, differential crystal oscillators, and MCU microcontrollers, while progressively integrating analog signal chain products. The company prides itself on delivering comprehensive and cost-effective solutions to its customers. Its products find applications across a broad spectrum of industries, including but not limited to network communication, industrial control, robotics, medical equipment, personal health, and numerous other fields.

Business: sales@manduic.com