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KYOCERA's New Temperature-Compensated Crystal Oscillator Offers Industry's Lowest Phase Noise for 5G, Wi-Fi

Improves connection performance of smartphones and network equipment

November 12, 2019Japan

Kyocera Corporation (President: Hideo Tanimoto) today unveiled a compact temperature-compensated crystal oscillator (TCXO) offering the industry's lowest phase noise*. Samples of Kyocera's KT1612 Series and KT2016 Series TCXOs are now available worldwide, with mass production planned to start in March 2020.

Photo:KT1612 Series (left) and KT2016 Series (right)

KT1612 Series (left) and KT2016 Series (right)

Compact Temperature-Compensated Crystal Oscillator (TCXO)
Series KT1612 Series KT2016 Series
Dimension 1.65×1.25×0.55mm 2.0×1.6×0.8mm
Applications Smartphones, Network devices
Production facility Yamagata Higashine Plant
Start of mass production March 2020 (planned)

Increased communication speeds and data capacities required for new 5G and Wi-Fi technologies have brought about a shift toward multilevel modulation systems that send multiple signals to a single section of a single wavelength. However, since noise and frequency fluctuations can produce data errors, circuit designers seek compact TCXOs that can provide higher frequency stability with less degradation. In these applications, a TCXO has two important performance indices:
1. Phase noise: Amplitude and phase fluctuations due to inherent noise in the device; and
2. Phase jitter: Shifts and fluctuations in the time domain of the waveform

Kyocera's compact TCXO delivers an industry-leading, ultra-low phase noise of -168 dBc/Hz at 100kHz offset. In addition, it reduces phase jitter to 68 fs from 12kHz to 5MHz, resulting in greatly improved communication quality. These new benchmark performance levels were achieved using high-Q-value, high-quality, synthetic crystals grown at Kyocera's Yamagata Higashine Plant, combined with a crystal oscillator optimized by plasma chemical vaporization machining (CVM), an ultra-high-precision processing technology, and an oscillator circuit that suppresses noise.

Kyocera will continue to enhance its TCXO line with improved phase-noise characteristics to support better performance in smartphones and network equipment.

Specifications and temperature characteristics
Operating temperature range-30-+85℃-30-+85℃

Electrical characteristics
Output frequency range26MHz-52MHz
Frequency tolerance vs. temperature±0.5×10-6
Frequency aging ±1.0×10-6/year 25℃ (Max.)
Supply voltage1.68-3.63V
Output level (at maximum load)0.8Vp-p(Min.)
Consumption Current2.5mA (Max.) / 26MHz

<Sample data of phase noise characteristics> 
Condition: Nominal frequency at 26MHz, temperature at +25℃

Photo:Sample data of phase noise characteristics

* Based on research by Kyocera. (as of October 31, 2019)
Wi-Fi® is a registered trademark of the Wi-Fi Alliance.