On Tue, 18 Jan 2011 19:36:20 -0800 (PST), macpacheco
wrote:

Earth shattering news for GNSS, commercial availability of Chip Scale
Atomic Clock (CSAC)


For 1st generation CSAC, amazing:

16 cc volume (1 cu inch)
35 grams weight
115mW of power
4 orders of magnitude better clock stability than typical frequency
crystals found in typical GPS receivers, that means that a CSAC will
drift in about 3 hours what a typical crystal would drift in a single
second. According to the supplier, Symmetricon, this CSAC is already
as accurate as a Caesium atomic clock !

So cost seems to be the only bottleneck before this component is
everywhere ultra high accuracy is desired. With WAAS receivers costing
around US$ 10k, a US$ 200 atomic clock might be an acceptable extra
cost. Although it probably costs a more than that right now (no price
estimates are to be found).

It seems to be $1500 each for small quantities:
http://classic.cnbc.com/id/41131245
--
Muzaffer Kal

DSPIA INC.
ASIC/FPGA Design Services

http://www.dspia.com