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iC-MA supplies the absolute angular position of a magnet placed above or below the chip's package, with a set of four distributed Hall sensors granting a reasonable system assembly tolerance. Controlled signal amplitudes are ensured by the embedded signal conditioning circuit also monitoring a "loss of magnet" condition for z-axis detection.

The encoding stage operates on 6, 7 or 8 bits of resolution and can resolve a 360° magnet turn into 256 angular steps, i.e. into increments of 1.4°. Different operating modes are available by pin selection, offering both analog output signals (sawtooth, triangle and sine/cosine) and digital output signals (encoder quadrature and counter control). A sequencer logic eases daisy chaining of multiple sensors on a 4-wire bus and can be selected optionally.

Applications

• – Contactless rotary switch
• – Digital potentiometer
• – Angular encoding
• – Motion control and robotics
• – Positioning and servo systems
• – Commutation of brushless DC motors
• – Vehicle control
• – Office equipment
• – Flow meter
• – Household appliances
• – Joystick and front panel controls

Features

– Resolution of 64, 128 and 256 positions within 360°

– Rotation speed of up to 60,000 rpm

– Outputs configurable to provide analog and digital signals

– Fail signal for low magnetic strength

– Cascading multiple iC-MAs allows the use of a single bus

– Enable input for low power standby

– Small DFN10 package (4 x 4 x 1 mm)

– Wide operating temperature range of -40 to +125°C