giving the vref on l297

Discussion in 'General Electronics Chat' started by kaushal patel, Apr 10, 2012.

  1. kaushal patel

    Thread Starter New Member

    Oct 12, 2011
    i would like to give VREF voltage on l297 with the use of pwm. so is it possible or not?
  2. StayatHomeElectronics

    AAC Fanatic!

    Sep 25, 2008
    You can generate an analog voltage from a pwm signal by applying a low pass filter to the output. Look at Microchip's application note "AN538: Using PWM to Generate Analog Output" for more details. You will need to determine if it is stable enough to be used as a Vref signal in your application.
    kaushal patel likes this.