SpectraLinear

SpectraLinear, Inc. is a fabless, mixed signal IC company that designs, manufactures and markets integrated timing circuits such as clocks, frequency timing generators, clock distribution products (zero delay and fanout buffers), EMI reduction clocks (SSCG), and large scale system clocks for state of the art consumer, communication and computation systems. These timing ICs combine both analog and digital circuits to generate very accurate clock or timing signals.
http://www.spectralinear.com/