[time-nuts] minimalist sine to square
jimlux at earthlink.net
Fri Jan 19 15:06:54 EST 2018
On 1/19/18 11:31 AM, Tom Van Baak wrote:
> John's TADD-2-mini  uses the Wenzel sine-to-square converter. It performs very well but requires +10 V.
> I'm looking for a solution that works at 5 V (e.g., USB powered) and also uses fewer parts. Wenzel also mentions using a differential line receiver . That would be an ideal single-chip 5 V solution for me but the two parts he mentions, MC1489  and SN55182 , don't appear fast enough for a 10 MHz input.
There are tons of LVDS that run on 3.3 or 5V, Maxim, TI both have parts.
The first Maxim part google turned up with "LVDS receiver" was a quad,
esd protected unit good to 400 MHz, 2ns prop delay, 50mV hysteresis.
You do want to watch the common mode voltages - some of the parts are
not good about having the signals swing near the rails (or beyond).
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