May 22, 2009 #1 7 7rots51 Advanced Member level 4 Joined May 17, 2002 Messages 1,183 Helped 25 Reputation 50 Reaction score 12 Trophy points 1,318 Activity points 9,636 avr pwm dac Can I use 16bit timer in PWM mode (AVR timer 1) as slow 16bit DAC?how? does it have linearity and precision of 16bit DACs,speed of DAC is not important(10SPS is OK)
avr pwm dac Can I use 16bit timer in PWM mode (AVR timer 1) as slow 16bit DAC?how? does it have linearity and precision of 16bit DACs,speed of DAC is not important(10SPS is OK)
May 22, 2009 #2 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,427 Helped 14,752 Reputation 29,786 Reaction score 14,105 Trophy points 1,393 Location Bochum, Germany Activity points 298,127 avr timer1 Linearity is typically better than standard DAC, based on the inherent linearity of a single bit DA, if the analog circuit is designed suitably. A 2nd or 3rd order low-pass filter is required to suppress the PWM frequency ripple.
avr timer1 Linearity is typically better than standard DAC, based on the inherent linearity of a single bit DA, if the analog circuit is designed suitably. A 2nd or 3rd order low-pass filter is required to suppress the PWM frequency ripple.
May 23, 2009 #3 bobcat1 Advanced Member level 4 Joined Jul 10, 2002 Messages 1,284 Helped 99 Reputation 198 Reaction score 34 Trophy points 1,328 Activity points 8,546 avr 16 bit timer Hi There is a nice artical on EDN site on using PWM as a DAC by Boni Beaker All the best Bobi
avr 16 bit timer Hi There is a nice artical on EDN site on using PWM as a DAC by Boni Beaker All the best Bobi