Crystals (300 companies)
Crystals are naturally occurring materials that can be induced to resonate (vibrate) at an exact frequency. Quartz, a piezoelectric crystal that provides excellent mechanical and electrical stability, acquires a charge when compressed, twisted, or distorted.
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Delay Lines (68 companies)
Delay lines are devices used to slow down a signal by a time interval in an electrical network. There are two basic delay line technologies: passive and active. 
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IC Clocks (44 companies)
IC Clocks are semiconductor integrated circuits designed to generate time. Learn more about IC Clocks

IC Timers (56 companies)
IC timers are semiconductor circuits that generate or set timing for electronics circuits. Learn more about IC Timers

IC Waveform Synthesizers and Function Generators (29 companies)
IC waveform synthesizers and function generators provide several different waveforms or functions at the desired frequency. Learn more about IC Waveform Synthesizers and Function Generators

Oscillators (468 companies)
Oscillators are devices that are used to generate repetitive signals. They produce output signals without an input signal. There are two major types of electronic oscillators: harmonic oscillators and relaxation oscillators. Harmonic oscillators produce sine wave outputs. Relaxation oscillators produce non-sine wave outputs such as square wave, rectangular wave, and sawtooth outputs.
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Phase-locked Loops (PLLs) (57 companies)
IC phase-locked loops (PLL) are closed-loop frequency controls that are based on the phase difference between the input signal and the output signal of a controlled oscillator. Learn more about Phase-locked Loops (PLLs)

PLL Frequency Synthesizers (58 companies)
Phase-locked loop (PLL) frequency synthesizers are electronic devices that produce frequencies coherent to a reference frequency.
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Resonators (124 companies)
Resonators are frequency-selective electronic circuits that can produce a fixed (resonant) frequency when properly excited. The value of the resonant frequency depends on the circuit’s components (e.g., inductors, resistors, capacitors, crystals, etc.).
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Specialty IC Timing Devices (21 companies)
Specialty IC timing devices are specialty or proprietary products related to IC timing devices. Learn more about Specialty IC Timing Devices