Showing posts with label timing. Show all posts
Showing posts with label timing. Show all posts

Tuesday, April 27, 2021

ADVA intros outdoor PTP grandmaster clock for 5G fronthaul

ADVA introduced an ultra-compact outdoor PTP grandmaster clock with multi-band GNSS receiver and integrated antenna for delivering nanosecond precision needed for 5G fronthaul and other emerging time-sensitive applications. . 

ADVA says its new OSA 5405-MB synchronization device ensures timing accuracy by eliminating the impact of ionospheric delay variation. The multi-band GNSS receiver and integrated antenna enable the OSA 5405-MB to meet PRTC-B accuracy requirements (+/-40nsec) even in challenging conditions.  By receiving GNSS signals in two frequency bands and using the differences between them to calculate and compensate for delay variation, the OSA 5405-MB eliminates inaccuracy and ensures ultra-precise synchronization whatever the space weather conditions. It can also work with up to four concurrent GNSS constellations (GPS, GALILEO, GLONASS and BEIDOU), increasing the number of observable satellites in urban canyons.

“Our multi-band, multi-constellation GNSS receiver provides an extremely cost-efficient way to achieve PRTC-B UTC-traceable network timing with the levels of accuracy needed for next-generation use cases. By adding this technology to our versatile, small-form-factor OSA 5405 Series, we’re offering a route to precision synchronization at the network access without significant investment,” said Gil Biran, general manager, Oscilloquartz, ADVA. “A ruggedized design and minimal visibility make our OSA 5405-MB easy to install in almost any outdoor location. With the power to compensate for ionospheric delay variations and provide resilience against jamming and spoofing, our compact edge solution really is the key to 5G synchronization.”

http://www.adva.com

http://www.oscilloquartz.com

Wednesday, March 24, 2021

Belgium's Proximus deploys ADVA synchronization for 5G

Proximus is leveraging ADVA's Oscilloquartz timing technology to synchronize Belgium’s largest open mobile network. The deployment enables Proximus to improve speed, coverage and reliability for millions of mobile users throughout Belgium, while also preparing its network for next-generation services. The deployment includes ADVA’s core grandmaster devices, access boundary clocks and its enhanced primary reference time clock (ePRTC) solution,. ADVA’s partner is Arcadiz Telecom, a leading provider of connectivity solutions across the Benelux region.

Proximus’s new nationwide synchronization network is built on the OSA 5440, an ultra-stable timing solution optimized for deployment in core networks and the OSA 5412 family of cost-effective, mid-scale synchronization devices engineered for deployment in a wide range of locations. It’s anchored by the robust and proven OSA 3230B ePRC cesium clock installed in two central sites. This supports high levels of frequency stability compliant with the strictest ITU-T standards and, combined with the OSA 5440, ensures long-term stability of UTC time. The extended stability performance of ADVA’s ePRC provides immunity against GNSS outages – a crucial requirement for mission-critical applications that should not rely on satellite-based timing alone.

“For major mobile network operators like Proximus, our PTP grandmaster and boundary clocks and our ePRTC solution are the perfect tools. They enhance overall performance and deliver the precision timing necessary for 5G use cases. Our technology also enables other services such as broadcast networks to migrate to IP-based timing,” commented Jörg Urban, senior director, business development, Oscilloquartz, ADVA. “The OSA 5412 Series and OSA 5440 support a smooth and cost-effective migration to next-generation phase and frequency synchronization. And with our ePRTC solution providing robust backup for GNSS, Proximus’ mobile customers can be sure of high-quality, uninterrupted services with no loss of performance.”

http://www.adva.com

Monday, February 1, 2021

SiTime intros low-power MEMS oscillator for consumer devices

SiTime introduced a low-power, temperature-compensated silicon MEMS oscillator (TCXO) designed for for connected consumer and IoT devices such as Internet-connected audio-video, over-the-top streaming devices, industrial smart meters, and other devices that use low power wireless connectivity. 

Features of the SiT5008 Temperature-Compensated MEMS Oscillator

  • Any frequency between 10 MHz and 60 MHz accurate to 6 decimals
  • ±2 ppm to ±10 ppm frequency stability
  • Operating temperature from -40 to +85°C
  • Low power consumption of 3.5 mA typical at 1.8 V
  • Standby mode for longer battery life
  • LVCMOS output
  • Industry-standard 2.5 x 2.0 mm x mm package, 100% pin-compatible with quartz devices
  • RoHS and REACH compliant, Pb-free, Halogen-free, and Antimony-free

“The development of our SiT5008 is a great example of our rapid release strategy, where we develop up to 15 product derivatives from a single base platform and bring them to market quickly,” said Piyush Sevalia, executive vice president of marketing of SiTime. “Each derivative has customized features and solves unique timing problems for customers. In this case, we improved the frequency stability by 10 times by optimizing our algorithms and delivered the product in just two months. This accelerated development was possible because of our systems knowledge and continued investment in automation.”


Tuesday, December 15, 2020

ADVA launches edge and access clocks for 5G

ADVA launched its latest Oscilloquartz edge and access network synchronization devices with enhanced capabilities for next-generation applications such as 5G. 

The new OSA 5412 and 5422 offer precise phase, frequency and time-of-day synchronization and can be used for time-as-a-service applications. 

The OSA 5412 is a highly flexible access network synchronization solution that offers compact and cost-effective timing distribution and assurance. The OSA 5422 is engineered for the most extreme conditions. It meets stringent frequency and phase synchronization requirements, delivers the best holdover performance of any edge device on the market, and supports multiple legacy interfaces such BITS and IRIG. Both solutions address new ITU-T specifications, including for class A and B PRTCs, ePRTCs with strict holdover requirements, and the newly improved class C and D boundary clocks. They also feature onboard multi-band, multi-constellation GNSS receivers that overcome ionospheric delay variation far more cost-efficiently than rival solutions using high-end rubidium oscillators. The OSA 5412 and 5422 support multiple PTP profiles, NTP and SyncE with the highest number of 1/10GbE ports on the market. What’s more, both devices are engineered with optional OLED display and with hot-swappable modules and power supplies to be easily upgraded in the field.

“Our latest solutions build on the great success we’ve had with our access synchronization product line. Now operators can harness the power of multi-band GNSS receivers to deliver highly accurate, UTC-traceable timing at the network edge. That enables the availability and precision that will be essential for tomorrow’s services,” said Nir Laufer, senior director, product line management, Oscilloquartz, ADVA. “By extending the feature set of our edge technology, we’re empowering CSPs to smoothly transition to the reliability and accuracy required for 5G and, at the same time, enabling our unique innovation to be used across a wide range of verticals. With support for 10Gbit/s and 1Gbit/s interfaces as well as hardware timestamping, our access timing products are the ultimate in future-proof, space-efficient synchronization.”

“Access grandmaster clocks need to meet stricter demands for accuracy and reliability than ever before, and many industries have their own specific set of stringent timing requirements. That’s why we’ve evolved our portfolio of edge and access network synchronization solutions for the specific challenges of the 5G era,” commented Gil Biran, general manager, Oscilloquartz, ADVA. 

https://www.adva.com/en/newsroom/press-releases/20201215-adva-launches-new-generation-of-edge-and-access-clocks-for-5g-network-timing

Thursday, October 1, 2020

ADVA delivers timing over PTP-optimized optical transport channels

ADVA introduced a mechanism that uses PTP-optimized optical transport to provide accurate synchronization from the core of the network all the way to the edge for 5G, smart grid and other time-sensitive applications. 

ADVA said its TrueTime technology offers new levels of robust and precise synchronization by using a bidirectional channel to deliver SyncE and PTP traffic. Accuracy is ensured by PRTC/ePRTC core clocks featuring OSA 5430/40 in combination with OSA 3230/3350 cesium atomic clocks. Closely-spaced, out-of-band wavelengths help TrueTime tackle asymmetric delay and leave all other channels available for customer traffic. Every element of the TrueTime solution is transparently controlled by ADVA’s Ensemble Controller and Ensemble Sync Director management system, featuring Syncjack monitoring technology. 

“Our TrueTime solution addresses some of the most urgent challenges for operators of critical infrastructure. It enables highly accurate synchronization throughout the transport network and offers a future-proof way to tackle the risk of reliance on satellite-based timing. From governments concerned with the growing risk of blocked GNSS signals to mobile network operators rolling out next-generation services, our TrueTime™ technology will prove invaluable,” said Henning Hinderthür, VP, product line management, ADVA. “TrueTime combines our PTP-optimized FSP 3000 optical transport with our ultra-precise Oscilloquartz technology, including PTP grandmasters with ePRTC capabilities in the core and boundary clock class D technology in metro locations. This even reduces cost and complexity by eliminating the need for unnecessary equipment, enabling operators to streamline their timing infrastructure.”

http://www.adva.com



Tuesday, August 4, 2020

SiTime builds MEMS Clock-System-on-a-Chip

SiTime is entering the $1 billion per year silicon clocks market with the introduction of a Clock-System-on-a-Chip powered by its third generation MEMS resonator technology.

The new SiTime "Cascade" family of MEMS clock ICs is targeted at 5G, wireline telecom and data center equipment. The first product, the SiT9514x, consists of clock generators, jitter cleaners, and network synchronizers that deliver multiple clock signals in a system. SiTime’s MEMS resonator is integrated inside the silicon package.

SiTime's MEMS devices, which have shipped over 1.5 billion units in over 200 commercial products, deliver higher performance, lower power, and better resiliency than other timing solutions.

SiTime says its Cascade clock-system-on-a-chip delivers up to 10 times higher reliability and resilience, enabling superior resiliency for 5G infrastructure. Either standalone or together with SiTime’s MEMS TCXOs and OCXOs, the SiT9514x delivers a complete timing solution for applications such as 5G RRUs, small cells, edge computers, switches, and routers.

Samling is underway and volume production is expected in Q4.

“SiTime continues to expand our focus on the communications-enterprise market for many reasons. Our MEMS technology is well suited to solve the difficult timing challenges of emerging 5G infrastructure. This represents a large growth opportunity for SiTime that is complemented by production usage for many years,” said Rajesh Vashist, CEO of SiTime. “Today, our Elite Platform™ Super-TCXOs™ and Emerald™ OCXOs have multiple design wins in this market. We are expanding our strong foothold with the introduction of the Cascade family. Not only is this a natural next step for our timing business, but it also brings us closer to the customer as we work together to define their clock tree. In fact, Cascade devices offer a complete clock-system-on-a-chip, which allows our customers to simplify their designs and reduce time to market. As the only provider of MEMS resonators, oscillators, and clock ICs, and delivering system-level benefits to customers, SiTime continues to transform the $8 billion timing market.”

Wednesday, May 20, 2020

ADVA brings its Oscilloquartz synchronization to power utility networks

ADVA has upgraded its entire range of Oscilloquartz grandmaster clocks to meet the latest PTP profiles for time, frequency and phase synchronization in power utility networks. This includes the OSA 5401 small form-factor pluggable, the OSA 5405 for indoor and outdoor substation deployments, the OSA 5420 Series, and the highly scalable OSA 5430 and 5440 with 10Gbit/s interfaces and fully redundant hardware.

ADVA said the enhanced technology will empower electricity providers to evolve their infrastructure into smart grids based on Precision Time Protocol (PTP) power profiles, while at the same time supporting all legacy timing signals. The technologies enable an easy migration to an Ethernet-based timing network with support for PTP, Network Time Protocol (NTP) and SyncE, as well as IRIG-B, PPS and BITS legacy interfaces. PTP-based backup combined with multi-band GNSS receivers and advanced monitoring capabilities ensure that the upgraded solutions provide highly reliable delivery of precise timing information even during long GNSS outages.

“Our upgraded technology makes it simple to modernize utility infrastructure. Now, power network operators can achieve the accurate and stable synchronization needed to develop smart grid power networks built on packet-based solutions, while also maintaining legacy timing,” said Gil Biran, general manager, Oscilloquartz, ADVA. “Our technology provides a clear and cost-efficient path to robust and future-proof utility network synchronization. Its PTP timing delivery complements and replaces legacy protocols, enabling the accurate and resilient timing needed for emerging intelligent applications. Along with our multi-constellation GNSS receivers, PTP backup is also essential for protecting critical power networks. This ensures efficient operations and the best protection from malicious attacks.”

Thursday, May 14, 2020

Türk Telekom deploys ADVA's Oscilloquartz network timing

Türk Telekom has deployed ADVA's Oscilloquartz network timing technology, bringing accurate, robust frequency synchronization to its national transport network.

The compact and flexible OSA 3230B Series cesium clocks enable high levels of frequency stability across Türk Telekom’s timing and sync network and their extended holdover performance protects against GNSS outages. The solution was implemented by ADVA and Türk Telekom’s partner Netaş, which will also provide continuous maintenance and support.

“The ADVA OSA 3230B Series maximizes the synchronization performance and continuity of our transmission network. It empowers us to optimize availability and deliver even more value to our customers,” said Yusuf Kıraç, CTO, Türk Telekom. “Accurate frequency and stable timing have become essential. Our residential and mobile customers will be demanding more access to streaming and gaming applications and enterprises across Turkey and will be looking to leverage long-distance collaborative tools. That will require precise and stable frequency and timing information at all times. With the OSA 3230B Series delivering vital immunity against loss of satellite signal, we can meet strict accuracy and stability needs.”

“With intentional GNSS impairments such as spoofing and jamming on the increase, as well as the threat of unintentional disturbances, it’s vital for decision-makers of mission-critical infrastructure to mitigate against GNSS vulnerabilities. Our OSA 3230B Series provides Türk Telekom with a primary reference clock that enables it to operate a highly accurate and stable time and frequency sync network resistant to GNSS outages,” commented Jörg Urban, senior director, business development, Oscilloquartz, ADVA. “Together with our business partner Netaş, we’ve worked closely to achieve true synergy with Türk Telekom. Our teams share a drive to continuously meet and exceed customer expectations. With the support of our engineers and our comprehensive technology portfolio, we’ll be able to meet their frequency and timing requirements for many years to come.”

Thursday, May 7, 2020

ADVA upgrades its Oscilloquartz timing technology

ADVA launched a major new software upgrade and introduced additional hardware cards for its high-capacity core Oscilloquartz synchronization solutions, the OSA 5430 and 5440, to help mobile network operators (MNOs) meet stringent 5G sync requirements while supporting all existing mobile technologies.

ADVA said the enhancements to the OSA 5420 edge device and the OSA 5430 and 5440 core solutions enable a seamless transition to ePRTC and emerging PRTC-B specifications while supporting legacy interfaces for frequency synchronization. In addition, transparent and boundary clocks with tighter specifications assure precise timing delivery to base stations.

The new solutions, as well as the OSA 5420 Series, feature firmware that supports the ITU-T’s newly specified boundary clocks, class C and D. With their enhanced timestamping capabilities, the devices distribute time with accuracy better than 5 nanoseconds. The new line cards enable operators to achieve precise synchronization of legacy network architectures based on PRCs, SSUs, composite clocks and NTP. The OSA 5430 and 5440 also support highly accurate multi-band, multi-constellation GNSS receivers, engineered to overcome inaccuracy caused by ionospheric delay variation.

“These new features give communication service providers exactly what they need. Now there’s a truly risk-free route to the new breed of mobile services. With our technology, network operators can keep their legacy services up and running while cost-effectively achieving the extremely stringent timing requirements of 5G,” said Gil Biran, general manager, Oscilloquartz, ADVA. “MNOs rely on their existing applications and we don’t expect them to be phased out any time soon. Yet it’s also important to stay ahead of the curve and ensure that 5G connectivity is ready to go. That’s why we’ve enhanced our modular devices to both protect and future-proof legacy synchronization architectures. With our technology, it’s easy to maintain existing revenue streams while preparing to meet the strict new ePRTC/PRTC-B specifications needed to support tomorrow’s phase and time synchronization.”

https://adva.li/5g-sync-solution-brief

Tuesday, April 21, 2020

Microchip updates its Timing Grandmaster with 5G phase protection

Microchip Technology released software version 2.1 for its TimeProviderÒ 4100 precision timing grandmaster.

TimeProvider 4100 is a 1588 grandmaster including support for the latest ITU-T G.8275.1 and G.8275.2 1588 phase profiles, complemented by extensive port fan-out for PTP, Network Time Protocol (NTP), SyncE, and E1/T1.

Software release 2.1 builds on earlier versions by adding key software enhancements providing a virtual Primary Reference Time Clock (vPRTC). Virtual PRTC provides the ability to design a redundant precise time distribution architecture for phase protection over an optical network.

The following are key features of the new vPRTC functionality:

  • Leverages the existing optical network, avoiding high-cost dark fiber expenses
  • Uses a dedicated lambda to transport time precisely and securely
  • Provides a high-performance, redundant source of time through enhanced PRTC (ITU-T G.8272.1)
  • Allows bidirectional, precise time flows (east and west)
  • Chains together high-precision, multi-domain, high-performance boundary clocks that meet today's standards (T-BC Class D, as defined by ITU-T G.8273.2)


In addition, Release 2.1 introduces Network Time Protocol daemon (NTPd) with Message Digest (MD5) security algorithm. TimeProvider4100 2.1 meets PRTC-B performance standards (per ITU-T G.8272) and supports 1G and 10G, NTP and PTP in a single form-factor system. TimeProvider 4100 2.1 is available now for both new and already deployed systems.

https://www.microsemi.com/product-directory/carrier-grade-ntp-ptp-ieee-1588-grand-masters/4422-timeprovider-4100


Sunday, December 8, 2019

Poland's PLAY deploys ADVA's timing solution for 5G-ready network

PLAY, the leading mobile phone network in Poland with over 15 million subscribers, has deployed ADVA's Oscilloquartz timing solution to provide LTE Advanced services throughout Poland and prepare its network for 5G.

The PTP grandmaster with dual integrated GNSS antenna enables Play delivers resilient and accurate Precision Time Protocol (PTP) frequency and phase synchronization. PLAY is migrating its radio access network from GNSS RF antennas and coax cables to standard copper and fiber Ethernet cabling. ADVA’s long-term partner NAVI also played a key role in the project.

“This deployment is about taking our RAN infrastructure to the next level. ADVA’s versatile and compact devices are easy to install in a wide range of outdoor locations. And, with low-touch provisioning and power over Ethernet, installation is even simpler and more cost-effective,” said Michał Ziółkowski, CTO, Play. “This solution delivers the extremely precise timing required for next-generation connectivity. With the OSA 5405 ensuring accurate and robust phase synchronization, we can offer unique LTE Advanced services and prepare for the 5G future.”


Monday, November 4, 2019

ADVA debuts multi-band GNSS receiver for 5G

ADVA launched a modular multi-band Global Navigation Satellite Signal (GNSS) receiver for ePRTC and PRTC-B synchronization in 5G networks.

ADVA said its solution is engineered to overcome ionospheric delay variation that causes timing inaccuracy, enabling communication service providers (CSPs) and enterprises to deliver nanosecond precision. Previously, this was achieved with expensive, rubidium clocks.

The multi-band, multi-constellation GNSS receiver card plugs into ADVA’s OSA 5430 and OSA 5440, advanced core grandmaster clocks able to support PTP, NTP and SyncE over multiple 1Gbit/s and 10Gbit/s Ethernet interfaces. This enables network operators to meet the requirements of the ITU’s stringent PRTC-B specifications and support the most advanced 5G applications.

“Our new multi-band GNSS receiver is a major milestone for network synchronization. For the first time, operators can harness a solution with multi-band GNSS capabilities combined with our core devices, which can deliver line rates up to 10Gbit/s and support ePRTC levels of timing accuracy,” said Gil Biran, general manager, Oscilloquartz. “Our modular technology offers a way to enhance equipment in the field, achieve PRTC-B levels of timing and improve the timing accuracy of ePRTC. All that’s required is a simple antenna upgrade. Then our multi-band solution can be plugged into the available slot of our OSA 5430 or OSA 5440 for the nanosecond accuracy that will be key to the services of tomorrow. And, as enhanced availability is also essential for emerging applications, the new technology features unrivalled jamming and spoofing detection capabilities combined with our centralized AI-powered GNSS assurance suite.”

https://www.adva.com/en/newsroom/press-releases/20191104-adva-introduces-multi-band-gnss-receiver-for-5g-timing-accuracy

Tuesday, July 24, 2018

Intel and SiTime collaborate on MEMS timing for 5G

SiTime, which specializes in MEMS timing solutions, and Intel agreed to collaborate on integrating timing solutions for Intel’s 5G multi-mode radio modems, with additional applicability to Intel LTE, millimeter-wave wireless, Wi-Fi, Bluetooth, and GNSS solutions.

SiTime said its MEMS timing technology helps meet the high-performance requirements of emerging 5G radio modem platforms, especially in the presence of stressors such as vibration, high temperature, and rapid thermal transients. Such stressors can disrupt the timing signal and result in network reliability issues, lower data throughput, and even connectivity drops.

“Our collaboration with SiTime on MEMS-based silicon timing solutions will help our customers build leading 5G platforms to best take advantage of the increased performance and capacity that the 5G NR standard brings,” said Dr. Cormac Conroy, corporate vice president and general manager of the Communication and Devices Group at Intel Corporation. “Intel’s modem technology and our collaboration with SiTime is helping to enable new mobile and consumer experiences, and enterprise and industrial use cases.”

“Intel is already building 5G’s future and has the scale to meet 5G’s scope,” said Rajesh Vashist, CEO at SiTime. “Our collaboration enables SiTime to align our MEMS timing solutions roadmap with Intel’s 5G platforms. Intel’s expertise in 5G modems, with SiTime’s game-changing timing technology, is a potent partnership for future growth and one that enables successful deployment of 5G. As SiTime continues to lead the world in MEMS timing, the opportunities between our companies are growing and this agreement sets us both on a path for continued success.”

Wednesday, March 7, 2018

ADVA's Oscilloquartz intros modular sync solution with 10G interfaces

ADVA Optical Networking's Oscilloquartz division introduced the first IEEE 1588 grandmaster clock device on the market to support PTP, NTP and SyncE over multiple 10Gbit/s Ethernet interfaces.

The new OSA 5430, which is designed to help network operators achieve the stringent phase and time synchronization requirements needed for LTE-TDD, LTE-A and 5G RAN networks, can be deployed in the core and at centralized aggregation locations.

It features fully redundant hardware -- in case one critical module fails, another instantly takes over. Built-in Syncjack assurance functionality ensures that operations teams are alerted to any issues before services are affected.

"Our OSA 5430 is a major milestone for network timing. With today's launch, we're answering the key challenges facing today's operators as they roll out next-generation technologies such as LTE-A, and addressing the urgent synchronization needs of finance and cable companies. This device provides a smooth transition from legacy sync and supports levels of integration never before seen in the industry. Interest in our OSA 5430 is extremely strong with major Tier 1 customers already secured," said Gil Biran, general manager, Oscilloquartz. "

Wednesday, February 7, 2018

SiTime reaches big milestone: 1 billion timing devices shipped

SiTime Corporation, which specializes in MEMS timing devices, announced a big milestone - the cumulative shipment of over 1 billion timing devices.

SiTime's MEMS timing devices are used in a wide range of applications such as mobile phones, tablets, fitness trackers, cameras, automobile, autonomous vehicles, rockets, earthquake detection systems, etc.

The company estimates the market for all timing devices is $6 billion, and SiTime supplies 90% of the MEMS timing components sold.

"SiTime is redefining timing technology, and we've only just begun our journey," said Rajesh Vashist, CEO of SiTime. "SiTime is uniquely focused on solving the most difficult timing problems for the electronics industry. That is why customers are using our timing products in self-driving cars, the Internet of Things, artificial intelligence systems, and 5G infrastructure. We believe that our timing components will be the device of choice for the next few decades."

Wednesday, November 29, 2017

Microsemi acquires Vectron's timing business

Microsemi has acquired the high-performance timing business of Vectron International, a Knowles company, for $130 million, excluding working capital adjustments.

Vectron specializes in frequency control, sensor and hybrid solutions using the very latest techniques in both bulk acoustic wave (BAW) and surface acoustic wave (SAW)-based designs from DC to microwave frequencies. Products include crystals and crystal oscillators; frequency translators; clock and data recovery products; SAW filters; SAW oscillators; crystal filters; SAW and BAW based sensors and components used in telecommunications, data communications, frequency synthesizers, timing, navigation, military, aerospace, medical and instrumentation systems.

Tuesday, April 18, 2017

IDT and Epson Introduce Timing Solution

Integrated Device Technology (IDT) and Seiko Epson, a leading supplier of quartz crystal technology, have introduced an ultra-high performance timing solution designed to address phase noise challenges in telecommunication and data centre applications.

For the solution, IDT's new 8V19N474 jitter attenuator and frequency synthesiser is coupled with Epson's VG-4513 voltage-controlled crystal oscillator (VCXO) to provide leading phase noise performance for demanding applications such as 40/100/400 Gigabit Ethernet timing.

The new 8V19N474 jitter attenuator and frequency synthesiser features RMS phase noise of 75 femtoseconds, with the ultra-low performance designed to provide system designers with the clocking requirement to transition from 28 Gbit/s to Ethernet interfaces utilising 56 Gbit/s PAM4 (TX) PHYs and other high-performance SerDes applications with sufficient timing margin.

IDT's 8V19N474 device can generate up to 12 reference clock signals and outputs multiple synchronised clocks, together with an output frequency range from 25 to 2500 MHz, including 125 and 156.25 MHz and LVDS and LVPECL outputs with adjustable amplitudes. The device targets Ethernet and OTN (OTU3, OTU4) in complex applications, as well as for driving ADC/DAC converters, cable TV head-end and DOCSIS 3.1 applications.

For wired communications, the IDT solution enables compliance with physical layer specifications of phase noise, bit error rate and signal-to-noise ratio without the need for external filtering. Additionally, the product's integrated low drop out regulator enables cost savings through enabling the use of an inexpensive DC/DC voltage supply.

Epson's VG-4513 VCXO device constitutes a proven component in the joint solution. Employing an HFF (high-frequency fundamental) crystal, the VG-4513 VCXO delivers very low close-in phase noise which, combined with the integrated VCO within IDT's 8V19N474, enables low phase noise at higher offset frequencies.


IDT's 8V19N474 product, which is available immediately, is supplied in an 8 x 8 mm 81-CABGA package; the Epson VG-4513 is also available now, provided in a 7 x 5 x 1.6 mm or a 5 x 3.2 x 1.3 mm ceramic package.

Monday, September 26, 2016

SiTime Unveils Next Gen Oscillators for Telecom and Networking Systems

SiTime unveiled a new family of Super-TCXOs (temperature compensated oscillators) and oscillators for telecommunications and networking equipment.


The new Elite Platform encompassing leverages the company's MEMS and analog technologies to deliver better performance, higher reliability and higher quality of service than conventional quartz solutions, even in the presence of environmental stressors.

In particular, SiTime's ELITE-Platform addresses environmental issues with potential to impact the performance of timing of network equipment in uncontrolled environments such as basements, curbsides, rooftops, and on poles. The company said precision timing components in these systems must now operate in the presence of high temperature, thermal shock, vibration and unpredictable airflow.

SiTime's Elite timing solutions are based on its unique DualMEMS architecture with TurboCompensation.

This architecture delivers exceptional dynamic performance with three key elements:

  • Robust, reliable, and proven TempFlat MEMS that eliminates activity dips and enables 30 times better vibration immunity than quartz
  • DualMEMS temperature sensing with 100% accurate thermal coupling that enables 40 times faster temperature tracking, which ensures the best performance under airflow and rapid temperature changes
  • Highly integrated mixed-signal circuits with on-chip regulators, a TDC (temperature to digital converter) and a low-noise PLL that deliver 5 times better immunity to power-supply noise, 30 uK temperature resolution that is 10 times better than quartz, and support for any frequency between 1 and 700 MHz

“New telecom infrastructure uses 4G/5G small cells and Synchronous Ethernet to increase network data capacity; the high-power components that are used in such systems will have high and constantly changing heat loads,” said Joe Madden, founder and principal analyst at Mobile Experts. “The dynamic performance of precision timing components during rapid temperature change will become a critical requirement in such equipment. MEMS technology inherently performs better in the presence of dynamic environmental conditions, and has become a very interesting alternative to quartz technology.”

The Elite Platform comprises four new product families with a wide range of frequencies and the following unique features. All Elite solutions offer 0.1 ppb/g vibration immunity and do not have activity dips or micro-jumps.

Stratum 3 precision Super-TCXOs for communications and cloud infrastructure equipment
  • ±100 ppb frequency stability over -40°C to +105°C, the widest operating temperature available with any TCXO
  • 1 to 5 ppb/°C frequency slope (ΔF/ΔT) at an extremely fast temperature ramp rate of 10°C/minute, a performance level that is unique among timing devices
  • 3e-11 Allan deviation (ADEV) at 10 second averaging time, 10 times better than typical quartz TCXOs
  • 0.2 ps/mV power supply noise rejection (PSNR), eliminates dedicated system LDO
  • Optional I2C/SPI frequency tuning, eliminates external DAC
 Super-TCXOs for GNSS, industrial and automotive applications
  • ±0.5 ppm frequency stability over -40°C to +105°C
Ultra-low jitter differential oscillators
  • 0.23 ps integrated RMS phase jitter (12 kHz to 20 MHz)
  • 0.1 ps integrated RMS phase jitter under Ethernet mask for 10G/40G/100G
  • ±10 ppm frequency stability over -40°C to +95°C, enabling better system reliability
High-temperature high-reliability differential VCXOs
  • Up to +95°C with excellent phase noise
  • Wide pull range from ±25 ppm to ±3600 ppm
  • 0.1% frequency tuning linearity under all conditions, 50 times better than quartz 
Engineering samples of the Elite-based ultra-low jitter differential oscillators and high-temperature VCXOs are available to qualified customers now. Samples of Elite-based Super-TCXOs are expected to be available in the first half of 2017. Pricing is available upon request.

SiTime is a wholly owned subsidiary of MegaChips Corporation (Tokyo Stock Exchange: 6875).

http://www.sitime.com

See video:  https://youtu.be/awhiNV1FQgQ

Wednesday, November 18, 2015

Microsemi Expands Clock Management Solutions

Microsemi introduced three new products in its portfolio of clock management solutions: ZL30244 and ZL30245 , two dual-channel any-to-any clock multiplier and frequency synthesizer integrated circuits (ICs), and ZL30255 , a dual-channel any-to-any clock multiplier and jitter attenuator. Target applications for the devices include access networks, storage area networks, data center infrastructure, enterprise infrastructure, and video broadcast equipment.

"Our three new clock management solutions build upon the success of Microsemi's single-channel versions, ZL30250/251 and ZL30253, further expanding product capabilities for our customers to reduce design complexity and lower bill of material costs," said Maamoun Seido, vice president and business unit manager of Microsemi's timing products. "Providing the second channel in these devices further simplifies and reduces the cost of designs. For clock trees that require multiple frequency families, the ZL30244, ZL30245 and ZL30255 provide lower chip count and lower cost solutions—all with exceptional jitter performance."

http://www.microsemi.com

Monday, August 3, 2015

ADVA Acquires Time4 Systems for Synchronization Technology

ADVA Optical Networking's Oscilloquartz division has acquiredTime4 Systems, which produces SFP-based pluggable clock devices that drive synchronization deeper into the access network. Financial terms were not disclosed.

Time4 Systems is a start-up based in Finland with 6 people in total.  Its network synchronization technology consists of SFP-based, pluggable clock devices that leverage global navigation satellite system (GNSS) receivers, telecom slave clocks (T-SCs), grandmasters (GMs) or boundary clocks (BCs). The SFP-based pluggable clock devices will become a part of the Oscilloquartz product portfolio and complement its existing synchronization offerings.

“Time4 Systems has a strategic understanding of the synchronization space. Their SFP-based pluggable sync devices are a clear example of this. They are a breakthrough technology for our industry,” said Brian Protiva, CEO, ADVA Optical Networking. “This technology enables Time4 Systems to address a number of key pain points for service providers that are seeking to deploy synchronization devices much deeper in the access network. This is why we acquired them. They are an ideal fit for our Oscilloquartz business and further strengthen a strong product portfolio. In fact, we already have a number of new business opportunities that we’re pursuing and we believe there’s a very clear market out there.”

http://www.advaoptical.com/


In 2014, ADVA Optical Networking SE acquired Oscilloquartz SA from Swatch Group. Financial terms were not disclosed.

Oscilloquartz specializes in network synchronization solutions, including high-quality quartz crystal oscillators.  The company, which was founded in 1949, offers technology for timing sources and timing distribution for legacy and next-generation packet networks. During its long history, Oscilloquartz has developed long-term relationships with hundreds of customers served by more than 80 distributors around the globe. The company is based in Neuchatel, Switzerland - the heart of Europe's traditional watchmaking region.

ADVA said the Oscilloquartz product portfolio complements its own Syncjack offering and enables the company to deliver a complete end-to-end solution and smooth migration for frequency and time synchronization to network operators, a large number of enterprise verticals and governmental institutions.