On Mon, 06 Aug 2007 16:35:37 -0700, Jim Thompson
wrote:

My preferred oscillator basically is...

http://analog-innovations.com/SED/CMOS-Osc-NoClip.pdf

but without the attenuator to avoid the ESD diodes... since my custom
stuff has no ESD diodes on the internal nodes.

Also the inverters are single stage instead of the 3-somes built into
the 74HC04's

U1A, in my designs, is often an NMOS device plus a current source
pull-up, to minimize power consumption.

In a recent RFID tag design, a 2MHz clock runs on 1uA ;-) (1.2V
supply.)

...Jim Thompson

I forgot to mention... without ESD diodes acting as clamps, this
oscillator is quite insensitive to power supply value. proof is left
as an exercise for the student ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
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