RIVER ELETECCORPORATION
2-1-11 Fujimigaoka,
Nirasaki, Yamanashi,
407-8502, Japan

President: Yoshihisa Hagihara
Stock code: 6666
Phone: 81-551-22-1211
Fax: 81-551-22-6645
https://www.river-ele.co.jp/ev/

RIVER ELETEC CORPORATIONPRESS RELEASE

Sample Shipment Begins for Innovative Single-chip Oscillator "KCRO-04"- Achieving 1GHz fundamental oscillation and future-leading RMS jitter of 20fs RIVER ELETEC Corporation (hereinafter referred to as "ourcompany") is proud to announce the market introduction ofKCRO-04, a fundamental product essential for accelerating
the evolution of high-speed communication and nextgeneration computing. This product is the third in our series
of innovative products utilizing our developed KoT cut andOPAW vibrational technology, with sample shipments having
commenced in May 2024.

Japan, June. 10, 2024:
A particularly important note is the high-performance IC,
developed independently by our company, which serves as the heart of KCRO-04. This proprietary
oscillation IC is custom-designed to extract the performance of the KoT cut oscillator, enabling
fundamental oscillation up to 1GHz while suppressing RMS jitter to less than 20fs. This results in
unparalleled high-precision performance in the market, showcasing our technical prowess anduniqueness.
Despite its compact size (3.2mm x 2.5mm),
KCRO-04 boasts superior performance andachieves the highest level of performancecurrently

available.

This

outstanding

performance allows KCRO-04 to meet thedemands for high-precision, stable signals
in high-speed communication and nextgeneration computing technologies that

Jitter and phase noise performance (LVDS, 1GHz)▶

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PRESS RELEASE RIVER ELETEC CORPORATIONPAGE 2

push the limits of computational power, establishing a new standard for technological innovation inthese fields.
Frequency temperature characteristics

KCRO-04 supports LVDS and LVPECL outputs, offering excellent frequency temperature characteristics
through KoT cut. This technology ensures stable operation over a wide temperature range, making it
ideal for applications requiring high reliability. In addition, by not using a PLL, it achieves extremely low
noise frequency output, significantly improving signal stability and information accuracy, particularly inapplications requiring high-speed data transfer and precise calculations.
This revolutionary technology is expected to play a significant role in both communication andcomputing fields, greatly accelerating their technological evolution. From the construction of high-speed
communication networks to high-performance computing in large data centers, and even as afoundation for cutting-edge technologies like artificial intelligence and machine learning, KCRO-04 is
expected to find a broad range of applications.
We are committed to further developing KoT cut and OPAW vibration technologies and continuing to
explore the future possibilities these technologies open. Through our KCR series of products, including
KCRO-04, we will provide our customers with state-of-the-art technology solutions and contribute to thedevelopment of the industry. For more information about KCRO-04 or to request samples, please contact
our sales department or visit our website. We, RIVER ELETEC, promise to forge a new horizon in futurecommunication and computing together with our customers through this innovative product.
※1 OPAW : Orthogonal Plate Acoustic Waves(Japan trademark registration application number 2020-131732 , pronounced Ohh-PAW)
KoT : Kerfed orthogonal plate waves for zero Temperature coefficient(Japan trademark registration application number 2020-131727 , pronounced Koh'-Tee)

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PRESS RELEASE RIVER ELETEC CORPORATIONPAGE 3Product HighlightsOPAW oscillator using patented new cut angle 'KoT cut'Size: 3.2 mm× 2.5mm × 1.3 mm
Output frequency: 100MHz ~ 1GHz
Achieves higher frequency stability over a wide temperature range than AT cut
Supports LVDS or LVPECL output
RMS phase jitter: 20 femtoseconds (typ. / SPXO)Applications: Communication equipment, supercomputers, measuring instruments

Standard Specifications
ItemSymbol

SpecificationsNominal frequency

fo100MHz～1GHz

Storage temperature

T_stg-55～125℃

Operating temperature

T_use

Frequency tolerance

Conditions / Remarks-55～125℃±20ppm MAX. (-40～+85℃)

High precision±30ppm MAX. (-40～+125℃)

High precision±50ppm MAX. (-40～+125℃)

Standard(Includes initial accuracy, frequency versus temperat
ure characteristics and aging over ten years.)

f_tol

Supply voltage

Vcc

1.8V±0.09V, 2.5V±0.125V, 3.3V±0.165V

Current consumption

Icc

40mA MAX.

Output voltage

VOD350mV TYP. , 250mV MIN.

Offset voltage

VOS1.25V TYP.

LVDS load condition

L_LVDS

100Ω

Rise timetr

500ps MAX.

20% to 80%

Fall timetf

500ps MAX.

80% to 20%

Symmetry

SYM

45～55%

Supply voltage

Vcc

2.5V±0.125V, 3.3V±0.165V

Current consumption

Icc

80mA MAX.

LVDS

Output voltage
LVPECLECL load condition

VOH

Vcc-1.03V MIN.

VOL

Vcc-1.60V MAX.

Between Outputs

L_ECL50Ω

Rise timetr

350ps MAX.

20% to 80%

Fall timetf

350ps MAX.

80% to 20%

Symmetry

SYM

45～55%

Input voltage
Start-up time

Terminated to Vcc – 2V

VIH0.7Vcc MIN.

OE terminal

VIL

0.3Vcc MAX.

OE terminal

t_str

10ms MAX.

Phase jitter

30fs MAX.

g-sensitivity

2ppb/g MAX.

12 kHz to 20 MHz offset

The information in this document is subject to change without notice.

MOREPRESS RELEASE RIVER ELETEC CORPORATIONPAGE 4Inquiries
Region/CountryCompany

Address

TelFaxUnited States

River Electronics (Singapore) Pte. Ltd.

49 Jalan Pemimpin#04-03 Aps Industrial
Building Singapore
57720365-62587874

65-62587366

China & Hong Kong

Xi'an River Electronics Corporation

9F-B7, New Green
Island Building,Nanshan Road,Shenzhen, China
51800086-75586528590

86-75586528590

China & Hong Kong

Taiwan River Co., Ltd.

3F,NO,14
LANE128,SEC.1,JUNG
SHING RD. WU-GU
DIST.NEW TAIPEI CITYTAIWAN R.O.C.

886-28988-2811

886-22983-4785

China

Xi'an River Electronics Corporation

1st Floor, No.7 Factory
Building, GuanzhongComprehensive
Bonded Zone A,
Fengcheng 12 Road,
Xi'an, China 710018

86-298665-8920

86-298665-8922

Korea

RIVER ELETEC CORPORATION (Korea)

9F NamBu Bldg, 389
Shinwol-ro,
YangChoen-gu, Seoul
08023, Korea

82-2-7843166

82-2-7844903

Japan

RIVER ELETEC CORPORATION (Tokyo)4-40-14 Nishi
Shinjuku, Shinjuku,
Tokyo 160-0023,
Japan

81-3-33775444

81-3-33742865

RIVER ELETEC CORPORATION (Osaka)Moriguchi-Fuji Bldg.
3F 1-3-2 KeihanHondoori MoriguchiShi Osaka 570-0083,
Japan

81-6-69984888

81-6-69984899

EuropeCanada
Latin America
Middle East
Oceania

TaiwanWeb

Inquiries https://www.river-ele.co.jp/ev/
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