On 2018-01-19 14:31, Tom Van Baak wrote: > John's TADD-2-mini [1] uses the Wenzel sine-to-square converter. It > performs very well but requires +10 V. I am using Wenzel approach without modification to drive it from +5V. I didn't see any issues for my applications (usually it perform sine-to-square conversion from OCXO to feed MCU clock). -- WBW, V.P.