Depending on temperature range, the SiT7910 Super TCXO from SiTime can attain frequency stability of less than 0.1 ppm. Clock oscillator circuits serve two functions. They provide a clock timing signal for digital circuits such as microprocessors and they keep track of time, often for time-stamping of events. While oscillators for digital circuits typically produce […]
Clocks & Timing
Clock buffers, multiplexers meet stringent PCIe Gen6 spec
Renesas Electronics Corporation introduced the first clock buffers and multiplexers that meet stringent PCIe Gen6 specifications. Renesas is offering 11 new clock buffers and 4 new multiplexers. The new devices, which also support and provide an extra margin for PCIe Gen5 implementations, complement Renesas’ low-jitter 9SQ440, 9FGV1002, and 9FGV1006 clock generators to offer customers a complete PCIe […]
The PC-board atomic clock, Part 1: Primary and secondary standards
Atomic clocks have shrunk from room-sized assemblies to PC-board mountable modules, admittedly with lower performance than their big siblings but still far better than crystal-based timing alternatives. Atomic clocks are based on the transitions of energy states of specific elements such as cesium, ytterbium, rubidium, and others under specific and tightly controlled conditions. They are […]
Choosing, using, and designing oscillators
Most electronics today have oscillators in them. Digital circuitry needs a clock. Radio frequency signals require an oscillator or clock. Some analog circuitry also needs a clock or oscillating signal source. If you are using a microcontroller then it might have a built-in clock, although it may not be accurate enough, depending on your application, […]
Top analog threads on EDAboard.com – August
(editor’s note: Intrigued by the problem? Have a question or another solution? Then click the “Read more” link and follow the conversation on EDAboard.com or log in to EDAboard and participate in the analog forum threads.) MOSFET getting very hot – In this schematic, the VCC feed with a less than 1 A MOSFET gets […]
Free-running reference oscillators span 10 MHz to 100 MHz with low phase noise
Pasternack has released six new free-running reference oscillators that generate a highly stable and accurate output frequency response with low phase noise and spurious performance levels, making them ideal in phase locked loops, function generators, frequency synthesizers and receivers for communication, radar, navigation, surveillance and test and measurement applications. These free-running, fixed-tuned oscillators use a high-stability […]
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What is a clock and what are its critical parameters (Part 1)?
The “clock” function is a standard part of nearly every electronic system, with very few exceptions. Behind this simple-sounding, commonplace word, there is an array of complexity and subtlety in definition, performance, and design. Clocks are both vital and ubiquitous, so it is worth understanding the different functions they fulfill, they ways they can be […]
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Top analog threads on EDAboard.com – February
(editor’s note: Intrigued by the problem? Have a question or another solution? Then click the “Read more” link and follow the conversation on EDAboard.com or log in to EDAboard and participate in the analog IC forum threads.) Making gain positive and NF less than 7.0 dB – I have designed a mm-wave amplifier, as I intend to […]
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Gunn Diode oscillator operates at 24.125 GHz
Fairview Microwave Inc. has released a waveguide Gunn oscillator that provides a cost-effective source for microwave power with excellent frequency and power stability while generating low-phase-noise. Typical applications include transmit and receive oscillators for radio communications, local oscillator source that can be multiplied for higher mm-wave frequency test and measurement, military and commercial radar sources, police radar, Doppler […]
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Crystal units allow for higher-density mounting and use in low profile, IoT devices
Murata Americas today introduced several miniaturized, highly advanced crystal units developed specifically for the IoT market. The company used its proprietary technology and volume production capability to design a product line that excels in quality and reliability, while also providing a cost effective solution. The series features a compact package that allows for higher-density mounting and use in lower profile devices. Target applications include IoT, mobile […]
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