Using the LM628 LM629 dedicated motion-control processors can be designed a variety of DC and brushless DC servo motors, and other servomechanisms applications .
The LM628 has an 8-bit output which can drive either an 8-bit or a 12-bit DAC.
An LM629 based system is similar, except that it provides an 8-bit PWM output for directly driving H-switches.
Using the NJM3771 stepper motor driver integrated circuit designed by New Japan Radio Co. Ltd. can be designed a very simple stepper motor driver circuit .
The NJM3771 IC is especially developed for use in microstepping applications in conjunction with the matching dual DAC (Digital-to-Analog Converter) NJU39610.