プラスチック成形品

Plastic mouldingSpecializing in plastic mold, metal mold and related equipment design and manufacture. Now has mold department, injection department, printing department, assembly department. From mold manufacturing to injection molding to provide a series of perfect service.
Plastic mouldingWe have a full set of machining center, milling machine, EDM, precision processing equipment, can according to drawings and samples, at a reasonable cost criterion for customers to design and manufacture of precision molds with satisfaction, and follow up in time according to the customer demand, strict control of product quality, continuous improvement of production technology, to create the greatest value for the customer.
We can provide plastic parts, die casting processing services in the mold can be customized. Injection molding department of the existing ten kinds of injection molding machine, can fully meet the needs of various types of mold injection molding.
Plastic moulding
We always make sure that the quality of products, providing quality services, strengthen management in the first place; adhering to the “credibility of the invisible market, the satisfaction of the service is the eternal market”

中国におけるPCBの地域分布

China’s PCB industry is mainly distributed in Southern China and East China, both of which add up to 90% of the country, the industrial
agglomeration effect is obvious. This phenomenon is mainly concentrated in the Pearl River Delta, China’s electronics industry, the main production base

China PCB industry analysis

Regional distribution of PCB in China

PCBの歴史

The creator of the printed circuit board was Paul Eisler (Paul Eisler), in 1936, he first used a printed circuit board on the radio.

In 1943, the United States will apply the technology to military radio, in 1948, the United States formally recognized the invention can be used for commercial purposes. Since the middle of 1950s, printed circuit boards have been widely used.

History of PCB

Diodes for SMD (PCBA)

Diodes for SMD (PCBA)
We purchase diodes for PCBA (SMD) projects:
General Purpose Rectifier
Fast Recovery Rectifier
Ultrafast Recovery Rectifier
High Efficiency Rectifier
Zener Diode
TVS
Smallsignal Schottky Diode
Smallsignal Switching Diode
SOT,SOD Switching
Schottky
DIAC
Bridge Rectifier
Automobile Rectifiers
Special Diode

電子部品の品質管理

Quality Control Of Electronic Components
We provide services for the Quality Control of electronic components.
We have a laboratory for the Quality Control of electronic components.
We cooperate with other laboratories of the Shenzhen city.

TOWN EL GROUP offers a full range of supplies from China
electronic products industry, electronic components and electronic products.

LMX2581 Wideband Frequency Synthesizer with Integrated VCO

LMX2581 Wideband Frequency Synthesizer with Integrated VCO
Industry’s Lowest Phase Noise Frequency Synthesizer

TI’s new LMX2581 wideband frequency synthesizer with integrated VCO outputs delivers the industry’s best phase noise performance. The LMX2581’s low noise PLL and industry’s highest phase detector frequency outperforms the competition to achieve the flexibility of a wideband frequency synthesizer without compromising system performance.

The highly-integrated LMX2581 combines a ?? fractional-N PLL, a multi-core VCO with tank circuit, optional frequency divider, two differential RF output buffers that can deliver +10 dBm single-ended on each side, and several low-noise, high-precision LDOs to enable lower cost systems in a number of applications, including wireless infrastructure, defense and aerospace, radar, test and measurement, and medical imaging.

Description

The LMX2581 is a low noise wideband frequency synthesizer that integrates a delta-sigma fractional N PLL, multiple core VCO, programmable output divider, and two differential output buffers. The VCO frequency range is from 1880 to 3760 MHz and can be sent directly to the output buffers or divided down by even values from 2 to 38. Each buffer is capable of output power from –3 to +12 dBm at 2700 MHz. Integrated low noise LDOs are used for superior noise immunity and consistent performance.

This synthesizer is a highly programmable device and it enables the user to optimize its performance. In fractional mode, the denominator and the modulator order are programmable and can be configured with dithering as well. The user also has the ability to directly specify a VCO core or entirely bypass the internal VCO. Finally, many convenient features are included such as power down, Fastlock, auto mute, and lock detection. All registers can be programmed through a simple 3 wire interface and a read back feature is also available.

The LMX2581 operates on a single 3.3 V supply and comes in a 32 pin 5.0 mm x 5.0 mm WQFN package.

Part Numbers
LMX2581
LMX2485E
LMX2531
LMX2541
LMX2571

Related end equipment

Cable Modem Termination System
Femto Base Station
Military: Radar/Electronic Warfare
Signal & Waveform Generator
TETRA Base Station
Vector Signal Analyzer
WiMAX & Wireless Infrastructure Equipment
Wireless Data Access Card
Wireless Infrastructure: Heterodyne RX/TX
Wireless Infrastructure: TD-SCDMA RX/TX
Wireless LAN Card
Digital Radio
Military: Munitions and Targeting
Point-to-Point Microwave Backhaul
Software Defined Radio (SDR)
Telecom Tower: Remote Radio Unit (RRU)
Vector Signal Generator
Wireless Communications Tester
Wireless Infrastructure: Direct Conversion RX/TX
Wireless Infrastructure: Hi-Perf WiMAX 802.16, 2.5-3.5GHz BTS RX/TX
Wireless Infrastructure: WCDMA & CDMA2000 4/8-Carrier, Receive Diversity RX/TX
Wireless Repeater

Source Texas Instruments

LMX2581 Wideband Frequency Synthesizer with Integrated VCO Datasheet and ordering information

ADM1270 – High Voltage Input Protection Device

ADM1270 - High Voltage Input Protection Device
ADM1270 – High Voltage Input Protection Device

Product Details

The ADM1270 is a current-limiting controller that provides inrush current limiting and overcurrent protection for modular or battery-powered systems. When circuit boards are inserted into a live backplane, discharged supply bypass capacitors draw large transient currents from the backplane power bus as they charge. These transient currents can cause permanent damage to connector pins, as well as dips on the backplane supply that can reset other boards in the system.

The ADM1270 is designed to control the inrush current, when powering on the system, via an external P-channel field effect transistor (FET).

To protect the system from a reverse polarity input supply, there is a provision made to control an additional external P-channel FET. This feature prevents reverse current flow in case of a reverse polarity connection, which can damage the load or the ADM1270.
The ADM1270 is available in a 3 mm 3 mm, 16-lead LFCSP and a 16-lead QSOP.

APPLICATIONS

Industrial modules
Battery powered/portable instrumentation

Source AD

ADM1270 – High Voltage Input Protection Device Datasheet and ordering information