Category: Hardware
Product Number: MAX9140
I am using a MAX9140 comparator as a threshold detector. IN- voltage is generated by an AD5693 DAC. I see severe crosstalk between IN- and IN+. If the IN+ input is heavily loaded, crosstalk appears at IN+ > 1.5V. If IN+ is floating, crosstalk occurs at all IN- voltages.
MAX9140 Vcc = 3.3 V
Any idea why this might be happening?
Maybe the comparator is blown, but it still switches ?
added schematic
[edited by: W9IP at 9:20 AM (GMT -4) on 23 May 2025]