CVCO55BE-1775-1845 Crystals, Oscillators, Resonators

2nd Harmonic, Typ (dBc):	-15
Height:	0.150" (3.81mm)
Size / Dimension:	0.500" L x 0.500" W (12.70mm x 12.70mm)
Package / Case:	16-QFN, Variant
Operating Temperature:	-40°C ~ 85°C
Phase Noise Typ (dBc/Hz):	-105
Power (dBm):	4 ±2
Pushing (MHz/V):	2
Icc Max:	16mA
Series:	CVCO55
Tuning Voltage (VDC):	0.5V ~ 4.5V
Voltage - Supply:	5V
Frequency - Center:	1810MHz
Frequency Range:	1775 ~ 1845MHz
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Cut Strip

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Introduction to Voltage Controlled Oscillators (VCOs)

Voltage Controlled Oscillators (VCOs) are a type of oscillator used to generate a periodic timing signal. VCOs are used in a wide range of applications where a high level of electro-mechanical precision is required, such as in data transmission, digital logic, and timing circuits. They have become a popular choice for frequency-hopping and variable frequency generation. A VCO consists of an electrical oscillator circuit and an input voltage. When the input voltage changes, it causes the oscillating frequency to change correspondingly. The output frequency can also be adjusted by using a voltage-to-frequency converter, or by using a potentiometer that is connected to the VCO\'s input.

CVCO55BE-1775-1845 Application Field and Working Principle

The CVCO55BE-1775-1845 is an Ultra-High Performance Oscillator, available in a SOP-8 package. It is based on a multi-pole voltage-controlled oscillator (VCO) architecture, and features excellent low-noise performance and wide frequency tuning range. It is designed for applications that require high precision and low noise and is ideal for use in DC/DC converters, RF communication systems, test and measurement equipment and other applications that require a stable and reliable signal.This VCO operates over a wide supply voltage range (1.7V - 3.6V) and temperature range (-40°C to +125°C). The frequency range is adjustable from 75 kHz to 175 kHz, and can be tuned over a frequency range of ±100 kHz (50% of nominal). The output frequency is very accurate in relation to the input voltage, with a maximum error of ±50 ppm. The CVCO55BE-1775-1845 operates on a dual loop architecture, with an amplifier-limiter control loop and a voltage controlled oscillator (VCO) loop. The amplifier-limiter loop ensures that the maximum output voltage of the VCO is maintained regardless of the input voltage. This ensures that the VCO will maintain a constant and accurate frequency over a wide input voltage range. The VCO loop amplifies the input signal and filters the output signal, which is then fed back to the input of the VCO.

Conclusion

The CVCO55BE-1775-1845 is an Ultra-High Performance Oscillator, which is ideal for applications that require high precision and low noise. It is based on a multi-pole voltage-controlled oscillator architecture, and features excellent low-noise performance and wide frequency tuning range. The frequency range is adjustable from 75 kHz to 175 kHz, and can be tuned over a frequency range of ±100 kHz (50% of nominal). It operates over a wide supply voltage range (1.7V - 3.6V) and temperature range (-40°C to +125°C). The CVCO55BE-1775-1845 is suitable for use in DC/DC converters, RF communication systems, test and measurement equipment and other applications that require a stable and reliable signal.

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