What are VCOs?
| Voltage controlled oscillators (VCOs) can be tuned over a wide range of frequencies by applying a voltage (tuning voltage) to it. This type of oscillator is less costly than crystal oscillators, but not as stable. |
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| 2012-04-09 | High-precision VCXO supports 4G wireless apps High-precision VCXO supports 4G wireless apps |
| 2011-05-16 | MEMS-based VCXOs claim 10x better linearity SiTime Corp. introduces the SiT380X family of MEMS-based VCXOs for telecom, networking and embedded applications. |
| 2011-04-25 | Employing low cost, low-noise crystal buffers Know the role of the crystal oscillator and buffer, which provides single or multiple identical outputs. |
| 2010-07-14 | Cut-to-style crystals handle 1MHz—150MHz range Bliley Technologies Inc. is offering an AT cut crystal series allowing design engineers to specify custom frequencies (to six decimal places) for maximized frequency pull range. |
| 2009-04-30 | ...Smallest' VCXO allows high density packaging ...Smallest' VCXO allows high density packaging |
| 2009-04-13 | Pentek unveils multi-frequency clock synthesiser Pentek has announced its Model 7190 Multifrequency Clock Synthesiser built for signal quality. |
| 2009-04-02 | MEMS oscillator smaller than VCXOs SiTime has developed a VCMO, which measures 2.5mm x 2mm, compared with VCXOs enclosed in 3mm x 3mm packages. |
| 2008-10-21 | Clock jitter cleaners improve system accuracy National claims its clock jitter cleaners are capable of providing ultra-low-noise clocks without VCXO modules. |
| 2007-04-27 | APN1012: VCO designs for wireless handset and CATV set-top applications Due to the demand of band coverage by RF applications, most of the free running oscillators have become varactor-controlled oscillators (VCOs). The use of VCO together with the first PLL circuit realises band coverage which requires two sources of RF power. The reference source frequency is generally a VCXO or TCXO, while the other frequency is controlled by the PLL phase detector. The applications include wireless handset and CATV STBs. |
| 2007-03-05 | VCXOs transmit more data Fox Electronics has announced that the low levels of jitter and high performance features in its XpressO VCXOs make it possible for more information to be transmitted than with traditional programmable oscillators. |
| 2007-01-18 | DIP-packaged TCVCXO delivers frequency stability Bliley Technologies Inc. has introduced its TV79B TCVCXO in a low-profile DIP package for communications applications including cellular base stations and telephony equipment as well as test and other electronic equipment. |
| 2006-11-22 | Vectron claims industry's 'smallest' frequency translator Vectron International has claimed to have released the industry's smallest quartz-based, ultralow-jitter frequency translator. The FX-730 is housed in a 5-by-7.5-by-2mm hermetic leadless ceramic package. |
| 2006-11-15 | Vectron unveils 'smallest' OCXO for telecom, wireless apps Vectron International has announced the smallest oven controlled crystal oscillator (OCXO) for telecom, wireless and data communications applications. |
| 2006-08-18 | Clock generators with VCXO save cost, space Clock generators with VCXO save cost, space |
| 2006-05-23 | HF VCXOs tout low phase noise Raltron Electronics Corp. has expanded its family of ultra-high frequency (UHF) and high-frequency voltage-controlled crystal oscillators for network processing, test equipment, WAN interfaces SCSL apps. |
| 2006-02-17 | VCXO clock generator targets comms VCXO clock generator targets comms |
| 2005-12-27 | Epson VCXOs suit terrestrial digital TV Epson Toyocom plans a series of voltage-controlled crystal oscillators that supports mobile handsets capable of receiving terrestrial digital TV broadcasts. |
| 2005-09-05 | Mixed-signal IC specialist enters frequency control market Silicon Laboratories has entered the frequency control market with the introduction of two families of high-frequency, low-jitter crystal oscillators (XOs) and voltage-controlled crystal oscillators (VCXOs) for apps up to 1.4GHz. |
| 2005-10-18 | Oscillators feature fast delivery MtronPTI has introduced two new oscillator lines that feature the company's QiK Chip technology for a shorter two-week cycle time. |
| 2002-06-12 | Voltage controlled crystal oscillators, voltage controlled oscillators This application note discusses the different characteristics and specifications, as well as design considerations, that are unique to voltage controlled crystal and non-crystal oscillators. |
| 2002-06-12 | TRU-600A: Code mark inversion (CMI) input data This application note presents examples on how to extract a clock signal from an incoming non-return to zero data stream using the TRU-600A device. |
| 2002-06-12 | RMS jitter calculation This application note presents the ways of calculating the rms jitter of the company's various crystal oscillator families. |
| 2002-06-12 | RMS jitter calculation in the 12kHz to 20MHz bandwidth for VI's CO-600V series VCXO RMS jitter calculation in the 12kHz to 20MHz bandwidth for VI's CO-600V series VCXO |
| 2002-06-12 | Absolute pull range definition This application note defines Absolute Pull Range and compares its advantages with alternatives such as total pull range. |
| 2002-12-05 | VCXOs - voltage controlled crystal oscillators This article provides information and characteristics particular on voltage controlled crystal oscillators and voltage controlled oscillators, non-crystal. |
| 2002-12-05 | Absolute pull range definition This article describes the APR and compares the advantages with alternative terms such as a total pull range. |
| 2002-12-16 | Temperature compensation for Stratum 3 holdover Pluto delivers stability over industrial and automotive temperature ranges which makes the oscillator suitable for applications that were formerly the domain of OCXOs including Stratum 3 and other SDH/SONET clocking applications. |
| 2004-06-17 | Enhancing CLC031 jitter performance with easy-to-use VCXOs This app note recommends the use of VCXO to reduce jitter when using the CLC031 back-to-back with a PLL-based serializer such as the CLC030. |
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