Hi
We need DAC81408 to work at Toggle mode, I see figure31 description toggle signal:1Vpp, but we want to use a external 4KHz Oscillator to drive toggle pin, the 4KHz Oscillator output signal is 3.3V logic level, is the 3.3V voltage level OK for toggle0~2?
Hi I have another question: In toggle mode, why are there burrs on the VOUT signal?
Does this ripple wave is caused by toggle mode?
If we set DAC81408 work at toggle mode, the toggle0/1/2 input is 4KHz 3.3V level square wave, can I measure such ripple wave on the VOUT? How much the ripple wave frequency and amplitude will be?
Hi Lei,
1. Yes you can drive the toggle [0:2] with a 4 KHz oscillator clock with 3.3V logic level. Please check the details below from datasheet.
2. This plot shows the response of the VOUT when CLRz signal is activated. DAC VOUT is in toggle mode at 20V +/-1V before the CLRz is activated. +/-1V on VOUT is due to toggle mode operation and set toggle voltages are 19V and 21V.
3. These toggle voltages can be set as per the datasheet instructions provided below-
Thanks,
Sanjay
