The chip housed in a TSSOP20 package includes a linear Hall sensor array which is adapted to the targets’ magnetic pole pitch of 2 mm. The internal signal amplification control compensates for deviations of the sensor signals due to temperature and working gap variations. Incremental (AB quadrature and Z index, 12 bit) and commutating signals are provided at the RS422 compatible line driver outputs.
An external reference signal can be used to gate the internal index Z signal to provide an absolute zero pulse. The linear resolution is configurable up to 4096 steps per each magnetic signal period of 4 mm, which corresponds to an incremental linear displacement of less than 1 micron.
At the fastest incremental output frequency of 8 MHz, linear movements of up to 8 m/s can be tracked with full 12 bit resolution. The UVW commutation signals are available for two- and four pole linear motor configuration.
iC-MHL200 is typically used in industrial, automotive, and medical applications, such as:
– Position control and acquisition
– Linear / rotary speed control
– Motor control
– As substitute for optical incremental encoders.
A synchronous serial SSI / bidirectional BiSS-C interface provides additional serial data output. Using BiSS-C allows for setting device configuration. These settings can be permanently stored in an OTP-ROM.
iC-MHL200 operates from a supply voltage of +5 V (±10%) within an operating temperature range of -40 to +125 °C.