Frequency

Oscillator enables frequency offering up to 500 MHz

3rd August 2020
Mick Elliott

CTS Corporation’s VF901723-38.400 MHz ultra-low noise 5G mmWave small cell base station reference TCXO provides a frequency reference with high stability performance attributes targeted specifically for 5G mmWave FSM100xx chipset.

The TCXO, which is in stock at distributor Digi-Key, is specifically designed to provide ultra-low noise figure applicable for QAM 256, 1024, and 2048 low EVM requirements specified by 3 GPP.

It utilises a proprietary noise filtering and frequency synthesis technology allowing phase noise performance reaching -176dBc/Hz at 100 kHz. It offers a duty cycle with ±1% tolerance over temp as well as reference stability of <280 ppb over -40°C to +85°C.

In cases where higher reference frequency source is needed, VF901723's technology allows frequency offering up to 500 MHz with very low phase noise performance and similar stability attributes.

As an example, at 100 MHz oscillation frequency, this platform can generate a signal with the noise floor reaching -174 dBc/Hz at 100 K offset.

With the exponential increase in the number of connected devices through the expansion of the 5G systems and specifically to support mmWave small cells in congested areas, VF901723 is designed with low costs to meet budgets and the economy of scale within the network utilising a mass-produced number of connecting nodes.

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