DESCRIPTION:

iC-MU150 is used for magnetic off-axis position definition with integrated Hall sensors. By scanning twoseparate channels i.e. the master and nonius trackthe device can log an absolute position within one mechanical revolution. The chip conditions the sensorsignals and compensates for typical signal errors.The internal 12-bit sine/digital converters generatetwo position words that supply high-precision positiondata within one sine-period. The integrated nonius calculation engine calculates the absolute position withinone mechanical revolution and synchronizes this withthe master track position word. Position data can betransmitted serially, incrementally, or analog throughtwo ports in various modes of operation. Commutation signals for brushless DC (BLDC) motors with upto 16 pole pairs are derived from the absolute positionand supplied through a 3-pin interface.During startup the device loads a CRC-protected configuration from an external EEPROM.After the device has been reset an optional externalmultiturn is read in an synchronized with the internal position data. During operation the position iscyclically checked.

FEATURES:

• Integrated Hall sensors for two-track scanning

• Hall sensors optimized for 1.50 mm pole width (master track)

• Signal conditioning for offset, amplitude, and phase

• Sine/digital real-time conversion with 12-bit resolution (14-bitfiltered)

• 2-track nonius absolute value calculation up to 18 bits

• 16, 32, or 64 pole pairs per measurement distance

• 2-track nonius absolute value calculation up to 18, 19 or 20 bitsfor 16, 32 or 64 master pole pairs

• Enlargement of measurement distance with second iC-MU150

• Synchronization of external multiturn systems

• Configuration from an external EEPROM using a multimasterI2C interface

• Microcontroller-compatible serial interface (SPI, BiSS, SSI)

• Incremental quadrature signals with an index (ABZ)

• FlexCount®: scalable resolution from 1 up to 65536 CPR

• Commutation signals for motors from 1 up to 16 pole pairs(UVW).

APPLICATIONS:

• Rotative absolute encoders

• Linear absolute scales

• Singleturn and multiturnencoders

• Motor feedback encoders

• BLDC motor commutation

• Hollow shaft encoder

• Multi-axis measurement systems