Address Book
 

BALLUFF
 

Seica
 

PEI-Genesis
 

KEYENCE
 

CML Microcircuits
 

SAMTEC
 

ams-OSRAM
 

INTEL
 

TDK Corporation
 

Giada
 

RS group
 

NOKIA
 

ANRITSU
 

Digi-Key Electronics
 

AERS

28.03.2024 0:07:07
bloky
maketa
HomePage
Electronic-components
Embedded
Industry automation
Pneumatic
Test & measurement
Tools
Electromobility
Solar energy
Lighting
Jobs
Trade fairs, Events
Virtual events
Interesting video
Various

Access Point WBE750
 
NETGEAR Unveils the Ultimate Tri-band Wi
Intel Core 14th Gen i9
 
Intel Core 14th Gen i9-14900KS Powers De
DDRH-15/30/45/60
 
Mean Well’s DDRH Series Isolated Ultra-W
TimeProvider® 4500 Series
 
TimeProvider® 4500 Series Is the Industr
IAM-20381HT
 
TDK announces new 3-axis accelerometer,
Microchip’s 5071B
 
New Cesium Atomic Clock Provides Autonom
POLOLU-4980
 
MINIATURE STEP-UP/STEP-DOWN CONVERTERS F
MANSON SDP-2210
 
MANSON SDP-2210 PROGRAMMABLE LABORATORY
DPI 750E
 
RS Components adds range of enhanced pre
conga-TR4
 
AMD Ryzen™ based congatec COM Express mo

Quartz Crystals and Quartz Crystal Oscillators Ansen
Without crystal oscillators, there would be no wireless communication, GPS receivers or Ethernet. Therefore, we are expanding the portfolio of suppliers with the renowned ANSEN manufacturer. Although new technologies such as MEMS oscillators exist, crystal oscillators remain the dominant source of accurate and stable frequency.
Required Frequency Stability for Different Applications ● USB low speed (1,5Mb/s) ±1.5% (15 000ppm)
● USB full speed (12Mb/s) ±0.25% (2 500ppm)
● USB high speed (480Mb/s) ±500ppm
● Ethernet 10/100/1000Mb/s ±100ppm (±50ppm at 25°C, ±50ppm for other influences)
● Wi-Fi 802.11 a/b/g/n, Bluetooth: 20ppm

With the increasing demand for higher data rates and more efficient use of radio spectrum, the requirements for frequency stability are also increasing. For example, a base station for mobile phones needs 50ppb (part per billion) accuracy.

Oscillators in microcontrollers

Current microcontrollers have built-in factory calibrated RC oscillator and oscillator for external quartz crystal or ceramic resonator.

Internal RC Oscillator

16MHz internal RC oscillator in modern microcontrollers, like STM32L4 family, is factory calibrated and can have total accuracy-2% to 1.5% (-20 000ppm up to 15 000ppm) in the temperature range -40 to 85°C. Drift over time is not specified.

Oscillator with Ceramic Resonator

● Ceramic resonator 12MHz, 3,2x1,3x0,7mm, Murata CSTNE12M0GH5L000R0
● Ambient Operating Temperature Range: -40...85°C
● Frequency Tolerance at 25°C: ±0.07%=±700ppm
● Frequency Stability over Temperature: ±0.11%=±1100ppm
● Aging: ±0.07%/10 years at 25°C

Total frequency deviation for 10 years: 700ppm+1100ppm+700ppm=2500ppm

Oscillator with Crystal

● Standard Ansen crystal 12MHz, 3.2x2.5x0.75mm: ASX3F-12M-FE180E5
● Operating Temperature Range: -40...85°C
● Frequency Tolerance (25°C): ±30ppm
● Frequency Stability over Temperature: ±30ppm
● Aging: ±3ppm/year
● Total frequency deviation for 10 years: 30ppm+30ppm+30ppm=90ppm

Quartz crystal oscillator offers the best accuracy. Practical limit for standard crystal oscillator (XO) is ±10ppm including frequency tolerance at 25°C, frequency stability over temperature, supply voltage change, change of shock and vibration and 1st year aging.

Important Crystal Parameters

Nominal Frequency and Load Capacitance (CL)

The most used topology is Pierce Oscillator. The crystal acts as an inductor.


The load capacity CL closes the parallel resonant circuit. The CL value is specified by the crystal manufacturer. To be accurate, the oscillator circuit must have the same load capacity to which the crystal has been set.

Equivalent Series Resistance (ESR)

The feedback resistor transforms the logic CMOS gate (inverter) to a linear amplifier with a transconductance Gm = - di/du, thus the output current of the amplifier is proportional to the input voltage.

The amplifier must have sufficient transconductance to compensate for losses in the oscillation loop (ESR and current flowing through the CL1, CL2, and the parasitic capacities of the leads to GND) and provide energy to build-up oscillation. Typical Gm is mA/V for MHz range crystals and uA/V for 32.768KHz crystals.

For reliable operation, Gm > 5gm_crit is recommended.

gm_crit = 4*ESR*(2πF)^2*(C0 + CL)^2 where

● ESR is the equivalent series resistance
● C0 is the crystal shunt capacitance
● CL is the crystal nominal load capacitance
● F is the crystal nominal oscillation frequency

Drive Level

The recommended or maximum drive level is specified by the crystal manufacturer, usually in uW. Exceeding this value may shorten the life of the crystal or cause damage by excessive mechanical vibration. Ansen recommends drive level of 100uW. Lower drive level can prevent oscillations, the higher level increases the resonant frequency of the crystals with the AT cut.

You can find more information in STM AN2867 and John R. Vig - Quartz Crystal Resonators and Oscillators For Frequency Control and Timing Applications - A Tutorial.

Why have we decided for Ansen?

Ansen is a leading manufacturer of frequency control products. Their offer includes quartz crystals, crystal oscillators, and ceramic resonators. Through continuous technology breakthrough and high-precision manufacturing technology, Ansen products are not only utilized in consumer electronics and industrial sectors but also designed in automotive fields.

Ansen offers:
1. management system certified to the international ISO 9001, ISO 14001 and IECQ QC 080000 standards
2. excellent reliability, solderability, thermal hysteresis, vibration resistance, and shock resistance
3. low aging and extended temperature range
4. high-precision manufacturing technology
5. automotive-grade products with AEC-Q200 compliant
6. all products are complied with RoHS and REACH request

We included 29 Ansen crystals in HC-49/US (SMD and TH versions) and 3.2x2.5mm SMD packages into our stock offer. We expect the first delivery at the end of June 2019. We will gradually expand the offer according to your requirements. All customers logged in to our e-shop can view the prices of crystals. All customers logged in to our e-shop can view the prices of crystals.

For further information about Ansen products, please do not hesitate to contact us at ansen@soselectronic.com 

2019080805 / 26.08.2019 / Various / SOS electronic s.r.o. /

LiPol rechargeable batteries for industrial applications
EEMB's 3.7V lithium-polymer batteries in an ultra-thin design, with high capacity, long life and low weight, are ideal for various mobile devices even in harsh industrial environments.

Design in line with the technology: FOXNEO
Standard product setting new standards. With the upcoming FOXNEO device family, FRIWO is completely redefining power supplies in terms of design.

The king among Cat 4 LTE modules
New Quectel EG25-G is an LTE Cat 4 module optimized specially for M2M and IoT applications. It is the worldwide 4G compatible module and thanks to adopting the 3GPP Rel. 11 LTE technology, it delivers maximum data rates up to 150Mbps downlink and 50Mbps uplink. Modul EG25-G is already available to order.

Verified and Improved Differential Pressure Sensors
Sensirion SDP800 series sensors are the reliable solution for precise airflow measurement in most demanding but cost-sensitive HVAC applications, such as VAV controllers, burners, heat recovery ventilation systems and filter monitoring.

Technical Support at Your Place during Our “Tools Tour“
In recent weeks, we've gone on a tour to you, directly to your companies. We believe that in today's digital era, it is truly valuable to see our products live and have chance to talk about them. Moreover, technical advice is priceless.

7 COLOURS of Terminal Blocks
Green, grey, black, blue, red, yellow and orange - using Euroclamp coloured terminal blocks radically reduces the possibility of incorrect connecting of the cables.

We are expanding the portfolio of IoT products with the world brand USR IoT
Our new supplier, USR IoT, is an expert in industrial communication IoT products with a focus on serial data networking and M2M applications. ISO9001 quality management with more than 20 years of experience in business guarantees its expertise.

Robust industrial connectors - more colours for better price
Connectors of the CA series have a reinforced plastic housing, making them a high-quality and efficient alternative to connectors with metal housings. They are reliable even in harsh environments with high levels of humidity and dust but still easy to connect and install. Practical colour resolution is convenient for both installation and maintenance.

Try “PlusMinus” - an ideal screwdriver for circuit breakers and terminalsvvvvv
Special screwdriver, which is neither slotted, nor Phillips type, but it combines the best of them both. And that's really a big PLUS.

How does the EMC Filter work?
Swiss company Schurter offers EMC filters, common mode chokes, as well as filters integrated with inlet, switch and fuse. Typical EMC filter contains common mode choke and X and Y class capacitors. But how does it work?

Zhaga. Smart Lighting for Smart Cities
Thanks to sensors and communication modules, modern LED luminaires will also be able to provide smart services. A key part of these luminaires are connectors, such as the LUMAWISE Endurance S series. They can be found in our product range under the TE Connectivity brand, a member of the Zhaga Consortium - the organization for standardization of LED lighting components for public lighting.

3 practical multimeter sets for reliable measurement
The 3 best-selling multimeters Fluke IMSK for industrial maintenance coming in three sets, offer a great opportunity to have the world’s best multimeter with a clamp multimeter and accessories at a discounted price of 15%.

Company of the week

BALLUFF

Interesting video


GAMING, COMPUTER ACCESSORIES AND OTHER RELATED PRODUCTS


New video for Pilot VX


electronica 2024, 12.11.-15.11.2024, Munich, DE


Video Report from AMPER 2022


INDUSTRIAL PRESSURE TRANSDUCERS FROM CYNERGY3


Address Book


BALLUFF


Seica


PEI-Genesis


KEYENCE


CML Microcircuits


SAMTEC


ams-OSRAM


INTEL


TDK Corporation


Giada


RS group


NOKIA


ANRITSU


Digi-Key Electronics


AERS


Flex Power Modules


Danisense


BINDER


Parker Hannifin


MOXA


DANFOSS


Alliance Memory


Intelliconnect (Europe) Ltd.


KIOXIA Europe GmbH


Antenova Ltd


Friedrich Lütze GmbH


Analog Devices


ASRock Industrial


NVIDIA


Yamaichi Electronics USA Inc.



Calendary
SENSOR+TEST 2024, 11.-13.6.2024, Nuremberg, DE
electronica 2024, 12.11.-15.11.2024, Munich, DE
DistribuTECH, 11.2.-13.2.2025, Dallas, TX

Interesting video
The ISS Design Challenge ...

Interesting video
Mouser Electronics Warehouse Tour with Grant Imahara


naše portály dle jazyka:

česko/slovenská jazyková verze:
WWW.ELEKTRONIKA.CZ
WWW.ELEKTRONIK-INFO.CZ

anglická jazyková verze:
WWW.ELECTRONICA.ONLINE
WWW.ELECTRONIC-INFO.EU
WWW.COMPONENTS.ONLINE

polská jazyková verze:
WWW.ELEKTRONIKA.ONLINE/pl
WWW.ELEKTRONIK-INFO.PL

ruská jazyková verze:
WWW.ELEKTRONIKA.ONLINE/ru
WWW.ELEKTRONIK-INFO.RU
naše portály dle zaměření:

ELEKTRONIKA.ONLINE :
WWW.ELECTRONICA.ONLINE
WWW.ELEKTRONIKA.CZ
WWW.ELEKTRONIKA.ONLINE/pl
WWW.ELEKTRONIKA.ONLINE/ru

ELEKTRONIK-INFO:
WWW.ELECTRONIC-INFO.EU
WWW.ELEKTRONIK-INFO.CZ
WWW.ELEKTRONIK-INFO.PL
WWW.ELEKTRONIK-INFO.RU

COMPONENTS:
WWW.COMPONENTS.ONLINE
  kontakt:

MALUTKI media s.r.o.
Těrlická 475/22
735 35 Horní Suchá
tel. 00420-603531605
e-mail: info@malutki-media.com



All trademarks are the property of their respective owners.
ISSN 1801-3813