National Semiconductor’s Clock Jitter Cleaners Eliminate Need for VCXO Modules
National Semiconductor has introduced the industry’s first family of clock jitter cleaners capable of providing ultra low-noise clocks without external high-performance voltage-controlled crystal oscillator (VCXO) modules. Using a simple external crystal and cascaded PLLatinum architecture, National’s new clock jitter cleaners provide sub-200 femtosecond (fs) root-mean-square (RMS) jitter to improve system performance and accuracy. This level of performance rivals the most expensive VCXO modules.The
The LMK04000 devices provide clean clocks to analog-to-digital converters (ADC), digital-to-analog converters (DAC) and other high-performance components used in wireless infrastructure, test and measurement, and medical ultrasound and imaging equipment. Wireless base station applications include single-carrier and multi-carrier GSM (GSM), Long Term Evolution (LTE), Universal Mobile Telecommunications System (UMTS), Worldwide interoperability for Microwave Access (WiMAX) and Code Division Multiple Access (CDMA) networks.
These clock conditioners are well-matched to work with National's high-speed op amps and ADCs -- such as the LMH6552 fully differential amplifier, LMH6514/15 digital variable gain amplifiers and ADC14V155 high-bandwidth 14-bit ADC -- to provide a complete signal-path system solution.
1st September 2020
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