Atomic Clock Rubidium Oscillator is accurate to 0.05 ppb.

Press Release Summary:

Based on atomic clock, IQRB-1 rubidium oscillator maintains high accuracy irrespective of temperature fluctuations. It operates at standard frequency of 10 MHz, accepts supply voltages between 12–18 V, and consumes up to 6 W with warm up time of typically 5 min. Operating temperature range is -30 to +65°C while storage temperature is rated at -55 to +85°C. Sub Miniature Atomic Clock is housed in 5-pin, 51 mm square package and resists EMI, shock, and vibration.

Original Press Release:

IQD Launch ±0.05ppb Rubidium Oscillator at Design West

IQD’s latest high performance oscillator, the IQRB-1, offers a stability around a 1,000 times more accurate than a typical Oven Controlled Crystal Oscillator (OCXO). This means it can be used as a free run frequency source in applications such as LTE (Long Term Evolution) systems that require exceptional timing accuracy. It can also be used for UTMS as well as extended holdover for CDMA and WiMax.

Based around an atomic clock, the IQRB-1 delivers an accuracy of ±5E10-11 irrespective of temperature fluctuations. This compares to IQD highest performance OCXO (IQOV-70 series) which offers a stabilities down to <±3E10-9 (<±3ppb).

This new Sub Miniature Atomic Clock (SMAC) is housed in a 5-pin 51mm square package making it compatible with many existing OCXO footprints whilst offering considerably improved performance. Operating at a standard frequency of 10MHz, the IQRB-1 can accept supply voltages of between 12 and 18 Volts. Power consumption is up to 6W maximum with a warm up time of typically 5 minutes, again making it comparable with many OCXO's.

The device can be operated over an operating temperature range of -30 to +65°C and Mean Time Between Failure (MTBF) is approximately 100,000 hours. Storage Temperature is rated at -55 to 85 degrees C and it is EMI compliant to FCC Part 15, Class B. Shock and Vibration performance is GR-CORE-63, 4.5.2/4, locked to 1.0G. Standard output compatibility is Sine Wave although HCMOS can be specified if required. The IQRB-1 has 100 times less drift than typical OCXOs and a short term stability of 8E10-11 over a 1 second period.

Pricing is $1142 per unit depending upon quantity required. Further details will be available at the IQD booth 834 at Design West 2013.

Backed by a pedigree that has been developed over nearly 40 years, IQD Frequency Products is a recognised market leader in the frequency control market. We have operations in America, Asia and Europe including our specialist OCXO manufacturing division, IQD FOQ GmbH in Germany. With active customers in over 60 countries, IQD offer one of the most comprehensive frequency product ranges available, from low cost commercial grade product to that used in high reliability military and professional grade applications. Our range includes Quartz Crystals, Crystal Oscillators, Silicon/MEMS Oscillators, Fast Make Oscillators, VCXOs, TCXOs, OCXOs, Automotive Crystals & Oscillators to AEC-Q200 & TS16949 release, Real Time Clock and SAW Filters.

Quality and customer service are the cornerstones of our success and we are absolutely focussed on consistently meeting and exceeding customer expectations. We take a partnership approach to working with our customers. Our experienced multilingual Sales and Application Support teams guide customers from design stage through to full production.

IQD’s products are specified by leading manufacturers in the aerospace, automotive, communications, computing, consumer, industrial, medical and military industries throughout the world. We work with several premier chip-set designers on a variety of key projects and hold approvals on a number of products including high specification oscillators. Our full range of products is available direct from all of our offices or via our extensive worldwide distribution and representative network. Full contact details are available on our website at

Further information:
Harriet Charles
IQD Frequency Products Ltd
T: +44 (0)1460 270200

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