topic PCA9685 output voltage issue in NXP Designs https://community.nxp.com/t5/NXP-Designs/PCA9685-output-voltage-issue/m-p/997866#M207 <HTML><HEAD></HEAD><BODY><P>I am using the PCA9685 to drive a few servos. I am having some issues with the servos not behaving as expected. Looking at the PWM output, I see a clean pulse and correct pulse width. However, I noticed that the "OFF" state is about 600mV. Should I add a pull down resistor (and a current limiting resistor) to the output of each PWM output? </P><P></P><P>Any help would be appreciated.</P><P></P><P>Regards,</P><P></P><P>Sebastian</P></BODY></HTML> Fri, 20 Mar 2020 18:02:20 GMT sscheiff 2020-03-20T18:02:20Z PCA9685 output voltage issue https://community.nxp.com/t5/NXP-Designs/PCA9685-output-voltage-issue/m-p/997866#M207 <HTML><HEAD></HEAD><BODY><P>I am using the PCA9685 to drive a few servos. I am having some issues with the servos not behaving as expected. Looking at the PWM output, I see a clean pulse and correct pulse width. However, I noticed that the "OFF" state is about 600mV. Should I add a pull down resistor (and a current limiting resistor) to the output of each PWM output? </P><P></P><P>Any help would be appreciated.</P><P></P><P>Regards,</P><P></P><P>Sebastian</P></BODY></HTML> Fri, 20 Mar 2020 18:02:20 GMT https://community.nxp.com/t5/NXP-Designs/PCA9685-output-voltage-issue/m-p/997866#M207 sscheiff 2020-03-20T18:02:20Z Re: PCA9685 output voltage issue https://community.nxp.com/t5/NXP-Designs/PCA9685-output-voltage-issue/m-p/997867#M208 <HTML><HEAD></HEAD><BODY><P>Yes, you can try to use pull down and limit resistors to decrease offset.</P></BODY></HTML> Mon, 23 Mar 2020 07:32:58 GMT https://community.nxp.com/t5/NXP-Designs/PCA9685-output-voltage-issue/m-p/997867#M208 guoweisun 2020-03-23T07:32:58Z