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Oscillators & Crystals

Oscillators are active devices that generate power at a frequency determined by circuit parameters. A crystal is a solid material that vibrates at a specific frequency when energy is supplied.
Ceramic Resonators (42 Companies)
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.
Crystal Clock Oscillators (93 Companies)
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.
Crystal Filters (49 Companies)
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.
Hybrid Oscillators (42 Companies)
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.
Low Frequency Oscillators (61 Companies)
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.
Microprocessor Crystals (54 Companies)
Standard crystals for use in clock circuits and timing in microprocessor circuits.
Monolithic Filters (36 Companies)
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.
Piezoelectric Ceramics (44 Companies)
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.
Piezoelectric Crystals (56 Companies)
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.
Programmable Oscillators (49 Companies)
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.
SAW Filters (34 Companies)
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.
SAW Resonators (29 Companies)
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.
Sinusoidal Oscillators (49 Companies)
Represent a general form of an oscillator circuit in which the amplitude of the output waveform varies sinusoidally with time.
Square Wave Oscillators (51 Companies)
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.
Surface Mount Crystals (32 Companies)
Discrete crystals which are packaged without leads and fastened directly to foil patterns.
Surface Mount Oscillators (44 Companies)
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.
Tuning Fork Oscillators (23 Companies)
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.
Recent Articles for Oscillators & Crystals:
OeXOs offer advantages over OCXOs
The OeD4/OeA4/OeM4 OeXO (OCXO equivalent crystal oscillators) series of precision frequency signal generators provides the accuracy and precision of . . .
VCO operates over 5,840 to 6,040 MHz
Suited for microwave radio and fixed broadband wireless applications, the V940ME28-LF operates at 5,840 to 6,040 MHz with a . . .
Crystal clock oscillator is 2.0 x 1.6 x 0.7 mm
Operating at 0.9 V ±0.1 V, the NZ2016SF measures 2.0 x 1.6 x 0.7 mm. Features include a nominal . . .
TCXO offers wide temperature range
The T45 temperature-controlled crystal oscillator has a wide temperature range capability of –55° to 125°C for high-reliability performance under . . .
High-frequency VCXO reduces phase jitter by 80%
The NV7050SA high-frequency VCXO can obtain frequencies up to 700 MHz — through high-frequency fundamental-mode crystals — without the . . .
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