iC-MHM 14-BIT ABSOLUTE ANGLE HALL ENCODER
●iC-MHM is a compact, contactless high-resolution magnetic angle sensor for the on-axis scanning of a diametric magnet. Its Hall sensor array provides sine/cosine signals output by differential drivers with 1 Vpp, which are resolved by a fast vector-tracking interpolation circuit. A signal fine-calibration can compensate placement errors and thus higher precision.
●The chip features multiturn counting, preset on power up and verified cyclically if an external multiturn sensor is connected. GPIO pins permit system control, can be used for pin-triggered position preset, or output of incremental and test signals.
●The device’s setup with CRC is acquired from an external EEPROM; sharing with other devices is possible due to the I2C multimaster interface. The embedded RS422 transceiver allows direct BiSS/SSI line connections. All interface pins are reverse-polarity and short-circuit-proof.
●Features
■Integrated Hall sensor array for fault tolerant assembly
■Signal stabilization by auto-gain with monitoring
■Compensation of misalignment by optional fine-calibration
■Absolute resolution of 0.02° (14 bit/ 360° up to 10,000 rpm)
■Selectable resolution and tracking rate (e.g. 12 bit at up to 80,000 rpm)
■Adjustable zero position and code direction
■Diff. current-limited sin/cos outputs (1 Vpp to 100 Ω)
■BiSS Interface for CRC-secured position and programming
■Compatible to BiSS-C profiles (BP1, BP3) and SSI
■Integrated RS422 transceiver for up to 10 Mbit/s (at5 V)
■Higher data rates supported by LVDS compatibility
■System monitoring via BisS error/warning bits
■Multiturn data processing for up to 32 bit (SSI interface)
■Command/pin-triggered position preset for ST/MT data
■3 GPI0 pins for system control, incr. and test signals
■Pin-selectable SPI operation
■Open-drain error message output
■CRC-protected setup from I²C EEPROM
■Extended temperature range from -40 to +125 °C
■Reverse-polarity and short-circuit-proof interfacing pins
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Datasheet |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2017/11/18 |
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Rev. 2.0 |
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828 KB |
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