21-Bit Magnetic Encoder Module with PWM/SPI Interface for High-Precision Brushless Motor Applications

The MT6835 chip is a fourth-generation magnetic angle encoder IC, an upgraded version of the MT6825, based on Anisotropic Magnetoresistive (AMR) technology. It enables absolute angle measurement from 0° to 360° using proprietary signal processing technology. This chip consists of a pair of AMR Wheatstone bridges and a signal processing ASIC circuit. As the magnetic field parallel to the chip surface rotates, it outputs angle signals including ABZ, UVW, and PWM. Users can read 21-bit absolute angle data via a standard 4-wire SPI interface supporting up to 16 MHz clock speed. It supports a maximum rotational speed of 120,000 RPM. The MT6835 is suitable for high-speed, high-precision applications such as closed-loop stepper motor control, 2500-line servo systems, and 17-bit absolute-value servo motor control. Key features: - Absolute angle measurement range: 0° to 360° - Operating voltage: 3.3 V to 5.0 V - Operating temperature: -40°C to 125°C - Linearity deviation: < ±0.5° (factory calibrated), < ±0.07° (typical self-calibrated), < ±0.02° (typical NLC self-calibrated) - System delay: 2 µs to 10 µs - SPI interface: 4-wire, up to 16 MHz - ABZ incremental output: configurable resolution from 1 to 8192 lines - UVW incremental output: configurable pole pairs from 1 to 16 - PWM output: 12-bit resolution - Configuration: SPI + ABZ (8192 lines) - Color: Black - Material: PCB Package includes: - 1 × Magnetic Encoder - 1 × Magnet Note: Other accessories are not included.