Oscillators go MEMS for low phase noise
Crystal maker IQD is using CMOS-based MEMS to produce low-phase noise oscillators.
“Due to its MEMS technology design, phase jitter is typically 0.7ps at 200MHz,” said the firm.
Introduced in the plastic packaged IQMS-900 series, oscillators are available from 1 to 800MHz, and can be factory programmed with either LVDS (low voltage differential source) or LVPECL (low voltage positive emitter coupled logic) outputs.
“MEMS technology is based upon the process techniques of CMOS and as such can be produced on standard production lines in foundries that are more used to producing standard or custom integrated circuits. This of course lends itself to the ability of producing product in vast quantities at an economic rate,” said IQD.
Claimed lead time is typically 1-6 weeks, depending upon volumes.
There are two case sizes: 7x5mm or 5×3.2mm, and two supply voltages: 3.3 or 2.5V.
Frequency stabilities can be specified at either ±10ppm over an operating temperature range of 0 to 70C, or +/-15ppm over -40 to +85C.
Proposed applications include Fibre Channel, Ethernet 10G, HDMI, SATA/SAS and USB3.