High-stability piezoelectric ceramics function as mechanical resonators. When voltage is applied, the piezoelectric "vibration behavior" cause an oscillating signal. The thickness of the ceramic substrate determines the resonance frequency of the device.
An oscillator in which the frequency of oscillation is controlled by a piezoelectric crystal. Used to achieve synchronization in timing circuits and references.
An oscillator in which the frequency of oscillation is controlled by a piezoelectric crystal. The frequency output of these devices are very stable.
A highly selective circuit capable of discriminating against all signals except those at the center frequency of the crystal, which serves as the selective element.
A VCO designed to accept digital tuning instead of an analog signal. Internal D/A converter transform the digital input to an analog voltage. Tuning curve linearization accomplished through digital memory. Frequency speed is limited by the D/A circuitry.
Oscillators that generate signal frequencies above 1 MHz. Common applications of these types of crystals are in communications, telecommunications, RF/microwave devices, frequency, timing references, etc.
Quartz-based crystals that generate primary frequency/timing references in the 1 to 200 MHz RF range.
General term for oscillators which include various components in their circuitry in order to achieve enhanced characteristics. This might include incorporating a SAW resonator and amplification devices for added stability, etc.
Oscillators that generate frequencies below 1 MHz. Common applications of these types of crystals are in clocks, digital circuits, quartz digital watches, audio circuits, timing modules, etc.
Crystals which are defined as cut for low frequency circuits under 1 MHz. Find uses in clock oscillators, digital circuits, quartz digital watches, timing modules, etc.
A special case of a compensated oscillator is the MCXO. Using internal compensation techniques, MCXOs overcome temperature effects on output frequency and stability of the crystal unit.
Standard crystals for use in clock circuits and timing in microprocessor circuits.
Filter whose operations are based on the use of deposited electrode pairs acting as shear or thickness-mode resonators separated by a non-electrode regions which act as acoustic coupling elements. Entire filter is on a single quartz or ceramic substrate.
Crystal oscillator having a small constant-temperature oven in which crystal devices are set to provide more stability. Frequency drift is suppressed by preventing temperature change at high temperature. Used in measuring systems and communications.
A discrete oscillator circuit packaged modularly for circuit or system usage. Performs timing or synchronization of network properties.
Oscillators which generate a PECL logic signal (0 to 5 Vdc). Mainly used in high speed and clock distribution circuits.
Properties of certain ceramic materials exhibiting a piezoelectric effect (ability to generate electric potential in response to applied mechanical stress). Vibrates at specific frequency when energy applied. Used for frequency control in oscillators.
Properties of certain crystalline materials exhibiting a piezoelectric effect (ability to generate electric potential in response to applied mechanical stress). Vibrates at specific frequency when energy applied. Used for frequency control in oscillators.
Oscillators that can be programmed to output a desired frequency. Sometimes output frequency and signal characteristics are set in advance by an EEPROM and are unalterable. In other cases signal specifications can be changed by a digital word or code.
Crystal blanks are basic quartz material from which slabs are cut for oscillator design. Holders/mounts are protective cases of insulating material for mounting the element. Protects crystal from environmental conditions and mechanically induced stress.
Using the properties of SAW devices in filter applications. Devices are found in communication, CATV, wireless remote control, satellite receivers, radio and video transmission fields.
Using the properties of SAW devices to exhibit a resonant behavior. Resonators using SAW devices are found in communication, CATV, wireless remote control, satellite receivers, radio and video transmission fields.
Represent a general form of an oscillator circuit in which the amplitude of the output waveform varies sinusoidally with time.
A square wave oscillator ideally generates a waveform which alternates regularly and instantaneously between two levels. Type of oscillators used in signal processing, communication circuits, clocks, timing circuits, synchronizing references, etc.
Using the properties of SAW devices to exhibit a resonant behavior. Crystals employing these devices are found in communication, CATV, wireless remote control, satellite receivers, radio and video transmission fields.
Discrete crystals which are packaged without leads and fastened directly to foil patterns.
Surface mount oscillators are oscillator devices which mount directly on the foil pattern surface of a PCB. Generally found in high frequency design and where space considerations are at a premium.
General term for oscillators that are used in circuits for the telecommunications industry. Includes applications in communications, radio, TV, telephone, the internet, networking, data transmission, etc.
Usually crystal oscillators which are tuned over temperature by a circuit to compensate for the natural temperature drift and frequency variations of the uncompensated oscillator.
Makes use of a tuning fork as the source of oscillation. Circuit may also use a pick-up coil and driving coil surrounding the fork. This type of oscillator is used for very stable low frequency applications–especially in quartz watches.
Crystals which are defined as operating in very high frequencies–greater than 200 MHz. Usually operates on overtone frequencies of the fundamental. Common applications of these types of crystals are in communications, RF/microwave devices, etc.
Type of crystal oscillator whose frequency can be changed by applying a controlling voltage to introduce a phase shift in the oscillating circuit.
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