The S430M830MA has been developed as ultra low noise and wide frequency band high performance synthesizer. Developed at the NDK Chitose Technical Center that started in April 2004.
The S430M830MA has extremely high performance on phase noise, spurious emission and reliability. It provides the transmitter/receiver equipment with purity local signal such as high CNR (Carrier to Noise Ratio).
The S430M830MA is optimized to digital terrestrial broadcast base station. We will continue to expand the usage into the next generation cellular base station such as 3.5G/4G cellular, trunk radio base station, and related measuring instruments.

The phase noise performance is the state-of-the-art -95dBc/Hz@100Hz in the wide frequency range of 430MHz to 830MHz.
The S430M830MA has been achieved by the integration of advanced digital signal processing technology and NDK original high-frequency low-noise quartz oscillator technology. Furthermore, NDK original frequency mixing technology has realized -70dBc low spurious emission.
Shipment schedule : March, 2006
[ Features ]
- Wide Frequency range covering, High Resolution Frequency Setting
- Setting with 1Hz step to any frequency of 430MHz to 830MHz
- The state-of-the-art Low Phase Noise (-95dBc/Hz@100Hz) and Low Spurious Emission Characteristic (-70dBc)
- Ultra Low Phase Noise by NDK original Low Noise OCXO(*1)
- Ultra Low Phase Noise by advanced digital signal processing PLL circuit technology
- Low Spurious Emission by NDK original Frequency mixing technology
- High Reliability by Single PLL Circuit Simplification
- The frequency stability ±0.1ppm by installed OCXO
- Self-diagnostic function, Frequency Setting/Status Monitoring function (RS-232C (*2))
- High accuracy software-controlled PLL circuit that synchronizes to the external standard signal (optional)
- Size: 100mm(W) x 39mm(H) x 122mm(D)
[ Description ]
The phase noise performance of S430M830MA is the state-of-the-art -95dBc/Hz@100Hz in the wide frequency range of 430MHz to 830MHz.
The S430M830MA has been achieved by the integration of advanced digital signal processing technology and NDK original Low Noise OCXO applied SC-Cut(*3) Quartz.
Furthermore, the S430M830MA has been realized -70dBc low spurious emission and 1Hz step frequency setting by NDK original frequency mixing technology.
Also, the S430M830MA can be controlled/monitored remotely with RS-232C.
The S430M830MA also can stabilize very accurate frequency for long term by the software-controlled PLL circuit (optional) that synchronizes internal OCXO frequency to external standard frequency signal (10MHz). This function is useful for duplicate usage of equipments and sharing usage of system clock.
The S430M830MA has a frequency stability of ±0.1ppm with the internal OCXO and automatically recognizes the presence of an external standard.
*Remarks
(*1) Oven Controlled Crystal Oscillator(*2) Remote control bilateral serial interface
(*3) Stress Compensated Cut
[ Function Block Diagram ]

The S430M830MA will be displayed in NDK Booth #6E95 at CEATEC JAPAN, Oct. 4th-8th, 2005 at Makuhari Messe.
[Contact]
Hiroyuki YamaguchiE-mail :