Low Phase Noise 100 MHz VCXO: V-7000

Low phase noise is achieved in this VCXO through the use of low phase noise 3rd overtone crystals with tight frequency stability vs. temperature. This VCXO is ideal for applications involving network and synchronization units and modules for professional telecommunication systems, measurement equipment/systems, and radar applications.

Low phase noise is achieved in this VCXO through the use of low phase noise 3rd overtone crystals with tight frequency stability vs. temperature. This VCXO is ideal for applications involving network and synchronization units and modules for professional telecommunication systems, measurement equipment/systems, and radar applications.

The overall stability including initial tolerance, frequency stability vs. temperature from -40 °C to 85 °C, frequency stability vs. supply voltage changes and vs. load changes and aging over 10 years is better than ±40 ppm. The frequency control range is larger than ±50 ppm.

For a 100 MHz output signal the typical phase noise of the V-7000 at 100 Hz carrier offset is below -120 dBc/Hz; it is about -145 dBc/Hz at 1 kHz and -170 dBc/Hz at 10 kHz. The typical "Noise Floor" at 100 kHz is below -175 dBc/Hz.

The supply voltage can be selected between 12 V or 5 V. The output signal options are ‘clipped sine', HCMOS or true sine. The low noise floor of -175 dBc/Hz or even better can be achieved with 12 V supply voltage and true sine output only; for smaller supply voltages and different kind of output signal the noise floor will be some declined.

Utilizing that 100 MHz VCXO phase-locked to a low noise tight stability 10 MHz OCXO like KVG's O.60.800388-LF provides the benefits of both devices: the good frequency stability and low phase noise close to the carrier of the 10 MHz OCXO device and for offset frequencies above 1 kHz the low power and excellent phase noise performance of the 100 MHz VCXO device.

The overall stability including initial tolerance, frequency stability vs. temperature from -40 °C to 85 °C, frequency stability vs. supply voltage changes and vs. load changes and aging over 10 years is better than ±40 ppm. The frequency control range is larger than ±50 ppm.

For a 100 MHz output signal the typical phase noise of the V-7000 at 100 Hz carrier offset is below -120 dBc/Hz; it is about -145 dBc/Hz at 1 kHz and -170 dBc/Hz at 10 kHz. The typical "Noise Floor" at 100 kHz is below -175 dBc/Hz.

The supply voltage can be selected between 12 V or 5 V. The output signal options are ‘clipped sine', HCMOS or true sine. The low noise floor of -175 dBc/Hz or even better can be achieved with 12 V supply voltage and true sine output only; for smaller supply voltages and different kind of output signal the noise floor will be some declined.

Utilizing that 100 MHz VCXO phase-locked to a low noise tight stability 10 MHz OCXO like KVG's O.60.800388-LF provides the benefits of both devices: the good frequency stability and low phase noise close to the carrier of the 10 MHz OCXO device and for offset frequencies above 1 kHz the low power and excellent phase noise performance of the 100 MHz VCXO device.