Output stability can be up to 30mV p-p on 0 to all 4 channels when otherwise the stability is only up to 10mV p-p, as displayed on a D0201 hand-held oscilloscope. I have been using the LTC2645IMS-L8 in the same circuit and pcb design since the beginning of 2021 and as best as I can recall, the outputs were always only up to 10mV p-p until my last 2 purchases when the 30mV p-p started to be seen.
Input PWM is 400 Hz at 5V with duty cycle equating to 1.8V to 4.5V and the output is input to an automotive suspension module as height sensor signals.
Is the 30mV p-p within specifications and if so, is there anything that I can do to reduce the instability? The instability randomly affects my product's ability to be used in the environment for which is has been designed.
Thanks,
Graeme
