[...]
Can
Love to find some DIP items myself (at reasonable cost). Seem forever nowadays to be soldering specks of coal dust onto DIL adapter PCBs. I can no longer trust the makers datasheets, hence test their stuff in isolation. Bring back the DIP!, we don't all design cell phones and ipods or have immutable space constraints.
I would reckon the best thing to do would be to use a simple digital oscillator say a pierce oscillator built around a single cmos logic inverter, and buffered with a second one. any cmos inverter would do at 10mhz.
The sinewave can more easily be extracted from the squarewave than the other way round, as all it requires is a low pass filter.
There will actually be a fairly good sinewave at the input to the first gate anyway, an inductor and/or resistor from this point to a low input capacitance linear amplifier buffer, say a simple single jfet amp.
to reduce the coupling of the buffer the pick off point could be taken from a capacitive divider wich takes the place of the tuning capacitor at the input to the inverter.
Colin =^.^=
Have something to add? Share your thoughts — no account required.
Ask the community — no account required