MagnTek · New Product | A new generation of decoding chip MT6709 for angle calculation of sine and cosine analog signals input by external linear Hall (working with 1 pair of polar magnetic rings)
Interpolation subdivision chip
MT6709 | Off axis absolute value angle decoding chip (external linear Hall)
◉Four linear Hall sensors arranged at a 90 ° angle with external components to achieve off-axis absolute angle detection
◉17 bit absolute angle data, which can be read through the SPI interface
◉Supports multiple outputs of ABZ, UVW, PWM, and SPI
◉Incremental ABZ output supports 1-2500 pulses/cycle with any integer resolution programmable
◉Provide a simple self calibration mode for the client, which automatically calculates compensation without data interaction
MT6709 is a new generation decoding chip launched by MagnTek Microelectronics, which is designed for angle calculation of sine and cosine analog signals input from external linear Hall (working with 1 pair of polar magnetic rings). As the rotation axis drives the single pole magnetic ring (one N-pole, one S-level) to rotate, four linear Hall chips placed at a 90 ° angle around the magnetic ring will sense and output analog signals of sine and cosine. After compensating, calculating, and decoding these four differential sine and cosine analog input signals, MT6709 can obtain absolute angle data with a resolution of 17 bits; The angle data will be further encoded into an AB incremental signal with a maximum resolution of 2500 pulses/cycle or 10000 steps/cycle; MT6709 also provides UVW output with a resolution of 1-63 pairs per cycle. MT6709 provides a 3-wire SPI interface for the upper computer or MCU to read the 17 bit absolute angle data inside the chip. At the same time, a single line output PWM can also provide angle data with a resolution of 12 bits. The STATUS and FAIL interrupt pins will output real-time operational status and diagnostic information of the chip. The core advantage of MT6709 is that it provides a user-friendly simple self calibration mode. Users do not need to interact with the MT6709 chip for data, do not need a reference source, and only need to move for a few cycles to compensate for the misalignment, amplitude, and phase errors of external input sine and cosine signals.
