[time-nuts] Need tiny 5MHz 10x amplifier

Bruce Griffiths bruce.griffiths at xtra.co.nz
Sat Nov 28 21:09:51 EST 2015

On Sunday, November 29, 2015 12:35:31 AM Poul-Henning Kamp wrote:
> I need to convert a 5MHz 0.2Vpp AC coupled sine signal to a 3.3V
> CMOS compatible logic signal.
> The "default" comparator based circuit either requires a negative
> supply or 4 resitors for biasing the input and setting the zero level.
> (The hysteresis resistor is the same in both cases).
> Since space is a bit tight, I've been trying to find something like
> a "x10 self-biasing amplifier" but without luck.
> Any good ideas 

LTC6957 ?
requires input capacitor plus a bias bypass capacitor as well as a 
supply bypass capacitor.


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