Classic stepper motor driver circuitry The A4983 stepper motor driver carrier is a breakout board for Allegro’s easy-to-use A4983 microstepping bipolar stepper motor driver. The driver features adjustable current limiting and five different microstep resolutions. It operates from 8 – 35 V and can deliver up to 2 A per coil. Note: We recommend the newer A4988 stepper motor driver carrier over this A4983 carrier; it is a drop-in replacement for this product with additional integrated protection. Overview This product is a carrier board or breakout board for Allegro’s A4983 DMOS Microstepping Driver with Translator; we therefore recommend careful reading of the A4983 datasheet (368k pdf) before using this product. This stepper motor driver lets you control one bipolar stepper motor at up to 2 A output current per coil (see the Power Dissipation Considerations section below for more information). Here are some of the driver’s key features: • Simple step and direction control interface • Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step • Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates • Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay) • Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection Like nearly all our other carrier boards, this product ships with all surface-mount components— including the A4983 driver IC— installed as shown in the product picture. We also sell a larger version of the A4983 carrier that has...
