Morgan Hill, Cal. – A new RoHS compliant version of Lin Engineering’s R325 stepper motor driver is now available. Combining compact size with high performance, the R325 can be used with stepper motors of many shapes and sizes. 
The R325 microstepping driver is capable of output currents ranging from 0.3 to 3.0A peak while handling +15 to 48VDC of input voltage. Selectable step resolutions from Full, 2x, 4x, 8x, 16x, 32x, 64x, 128x, and 256x microstepping are also available. The R325 has hold current reduction capability with adjustable current and timeout settings. It also features three optically isolated inputs and one optically isolated control output that can be used for step, direction, disable/enable, and fault detection.
The R325 features Pole Damping Technology™ (PDT) which enhances a step motor’s performance by creating a more accurate and smooth motion profile. PDT optimizes the microstepping performance of the step motor by outputting the correct amount of run and hold current to the motor, at the right time. Thus, each step will overcome the motor’s natural tendency to want to “jump” towards the full step ON position.
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