May 11, 2021
Nihon Dempa Kogyo Co., Ltd.
Representative Director and President
Hiromi Katoh
Developed ultra-low phase noise VCXO with industry-leading low floor noise performance of-180 dBc/Hz (*1) (SMD, sized 14×9mm)
Nihon Dempa Kogyo Co., Ltd. has developed a compact, low-profile, ultra-low phase noise VCXO
( Ultra Low Noise VCXO of 13.8×9.2×2.8mm in size).Sample shipments will start from June 2021.
The 5th-generation mobile communication systems (5G) service has started
future, the use of 5G communications in autonomous
expected to further increase the amountin Japan. In thedriving and the widespread use of IoTs areof communications, and it is expected that system will

become faster and more responsive (with lower delays).
In order to ensure these communications qualities, a compact crystal oscillator with good phase noisecharacteristics is required particularly for the synchronization circuit of the local oscillator and the control unitof the radio section in the base station. To meet this need, we have developed a VCXO that realizes a floor noise
of-180 dBc/Hz.
In particular, this can contribute to 5G base station applications < RU/BBU (CU/DU) > (*2).
Using our crystal unit design using high-quality synthetic quartz crystal and low-phase noise
circuit design, we have achived floor noise of Typ.-178 dBc/Hz (offset frequency: 100kHz) andTyp.-180 dBc/Hz (offset frequency: 1MHz or higher). Compared with our conventional ultra-low
phase noise VCXO (NV13M09WS), the floor noise has improved to 9-12dB over 100kHz, which is
the highest level in the industry.
Sample shipments of this product are scheduled to begin in June 2021, and mass production willbegin in November 2021. We plan to expand our product lineup by expanding the range of output
frequencies and supporting CMOS output.
We will continue to provide highly reliable, high-precision products required in 5G era,and contribute to the realization of a safe, secure, and comfortable society through ourquartz device and crystal based

equipment business.

[Exterior Photo][Specifications/Characteristics]
Model

NV13M09WU

External Dimensions

13.8 × 9.2 × 2.8 mm

Frequency Range

100 to 156.25 MHz

Standard Frequency

100 MHz, 122.88 MHz

Control Voltage Range

5 V+/-5 %Control Voltage Range

2.5 V+/-2.5 V

Operating Temperature Range-40 to +85 ℃

Current Consumption

Max. 35 mA

Overall Frequency Tolerance(*3)

Max. +/-40 × 10-6

Output Level, LoadSine wave, Min.10 dBm, 50Ω

Absolute Pull Range (APR) (*4)

Min. +/-5 × 10-6
Typ. -90 dBc/Hz @ 10 Hz
Typ. -130 dBc/Hz @ 100 Hz
Typ. -154 dBc/Hz @ 1 kHz

Phase Noise (@100 MHz)Typ. -172 dBc/Hz @ 10 kHz
Typ. -178 dBc/Hz @ 100 kHz
Typ. -180 dBc/Hz @ 1 MHz
Typ. -181 dBc/Hz @ 10 MHz

Phase Jitter (@100 MHz)Typ. 9 fs (12 kHz to 20 MHz)

*1：Based on our investigation in April 2021
*2：RU(Radio Unit ：Radio satellite station)
CU(Central Unit：Aggregate Nodes)

BBU(Base Band Unit：Baseband portion)
DU(Distributed Unit：Distributed node)*3：Overall Frequency Tolerance= (Frequency Tolerance) ＋ (Frequency/Temperature Characteristics) ＋(Frequency/Voltage Coefficient) ＋ (Long-term Frequency Stability (10 years))*4：Absolute Pull Range (APR：Absolute Pull Range)= Frequency Pulling Range－Overall Frequency Tolerance

[Example of Phase Noise Characteristic] 100 MHz VCXO-180dBc/Hz @1MHz[Contact]
NIHON DEMPA KOGYO CO., LTD.
e-mail ：newsrelease@ndk.com