Linear rolls out wideband amplifier
Linear Technology Corp. has introducesd the LT6552, a wideband difference amplifier.
Offering common mode rejection at high frequencies (CMRR > 60dB at 10MHz), the LT6552 minimizes the effects of high-frequency noise pickup, allowing signals to be sent over long lines without corruption by external noise sources or crosstalk.
Designed for video applications but also useful for general purpose signal processing, this amplifier can be used in differential or single-ended input configurations.
The LT6552 features a 75MHz -3dB bandwidth, 600V/us slew rate, and ±70mA output current, making it ideal for driving cables.
The input voltage range includes ground simplifying single supply operation. The output swings rail-to-rail, providing maximum output dynamic range.
In addition, shutdown feature is included to reduce power dissipation.
The LT6552 is ideal for use as a twisted pair or differential line receiver, coax cable driver, twisted pair to coax cable converter and cable-tap amplifier for loop through connections in a wide variety of video applications.
The LT6652 is offered in the space-saving 3mm × 3mm DFN package. It is specified for operation over the industrial and commercial temperature ranges.
Pricing starts at $1.10 each in 1,000-piece quantities.
Summary of Features: LT6552
- Differential or Single-Ended Gain Block
- Output Swings Rail-to-Rail
- Input Common Mode Range Includes Ground
- 600V/us Slew Rate
- -3dB Bandwidth = 75MHz, AV = ±2
- CMRR at 10MHz: >60dB
- High Output Drive: ±70mA
- Specified on 3.3V, 5V and ±5V Supplies
- Power Shutdown to 300µA
- Operating Temperature Range: -40°C to 85°C
- Tiny 3mm × 3mm × 1mm DFN package
GE expands power supply line
GE Industrial Systems has announced the expansion of GE’s Digital Energy SG Series line of Uninterruptible Power Supply (UPS) systems to 500kVA for the North American market.
This represents GE’s largest investment to date in the development and delivery of UPS technologies and products to meet customer’s power needs.
The SG Series is built upon GE’s field-proven UPS advanced digital processing design, including:
- Unique Redundant Parallel Architecture eliminating any single point of failure
- Extremely low-output voltage distortion for clean output waveform
- Space Vector Modulation
- Output isolation transformer providing greater critical power protection
- Superior battery management
- Front service access reducing operational footprint
- Enhanced cooling design
- Integrated input filter reducing input current distortion
- Automatic start-up procedure with user-friendly interface
Vishay unveils tiny receiver modules
Vishay Intertechnology Inc. has announced the release of a new series of miniaturized IR receiver modules that are the industry’s first such devices approved for a storage temperature range of -40 °C to +90 °C in automotive environments.
Designed for remote control systems in automotive applications requiring an extended storage temperature range, the new TSOP48xxxxAM multi-functioned IR receiver modules will be used primarily for in-car entertainment systems.
The new Vishay Semiconductors devices integrate a photo detector and preamplifier in a single compact package with internal metal shielding for protection against electrical field disturbances, as well as Automatic Gain Control (AGC) circuitry for suppression of ambient light disturbances.
With dimensions of 6mm by 6.95mm and a height profile of 5.6mm, TSOP48xxxxAM receiver modules help designers develop highly integrated, space-saving remote control systems.
Each module’s compact epoxy package serves as an IR filter to further enhance performance.
In addition to high immunity against ambient light, the TSOP48xxxxAM series provides low power consumption and a low active output.
An internal band filter allows PCM frequency operation.
The devices are optimized for multimedia applications with a demodulated output signal that can be decoded directly by a microprocessor.
Specified for a supply voltage of 4.5V to 5.5V, these receiver modules are available in seven standard carrier frequencies ranging from 30kHz up to 56kHz with a suitable burst length of >=10 cycles/burst.
The new devices are TTL- and CMOS-compatible.
Samples and production quantities of the new TSOP48xxxxAM IR receiver module from Vishay Semiconductors are available now, with lead times of six to eight weeks for larger orders.
Pricing for U.S. delivery in 100,000-piece quantities starts at $80 per 100 pieces.
SmarTrunk announces new system
SmarTrunk Systems Inc. announced the new SmarTrunk System II.
Representing the combination of its proven SmarTrunk II trunking protocol with a newly upgraded ST-510 Network Switch, the new SmarTrunk System II transforms the venerable SmarTrunk system from a single site, 16-channel system to a multi-site, wide area network with up to 256 site locations of 32 channels each.
The result is a single, integrated communication network offering wide area coverage, plus a host of new advanced features such as voice prompts, digital voice mail, call forwarding, voice logging, dynamic regrouping and many more.
The SmarTrunk System II is compatible with all SmarTrunk II base station controllers and Omni logic boards, which makes it possible to upgrade an existing SmarTrunk II system without having to add new controllers, repeaters, or subscriber radios.
With compatible radios offered by Kenwood, Icom, Motorola, Standard and Yaesu/Vertex, the SmarTrunk System II offers the largest radio selection of any VHF/UHF trunking protocol.
A key component of the SmarTrunk System II is the upgraded ST-510 Network Switch, a rugged, computerized switch with a modular design that allows easy expansion of users and sites.
Recent upgrades include a new ST-100RA Multiplexer and a new ST-422 Switch Board with built-in remote site telemetry capability.
Complete system management and billing software packages are available in English or Spanish.
Vertex announces new mobile series
Vertex Standard continues its rollout of new products with the introduction of the VX-5500 Public Safety Mobile Series in both VHF and UHF models.
As with all Vertex Standard products, the VX-5500 is built tough to meet or exceed Mil Std 810 C/D/E standards including dust, shock, vibration, temperature, solar radiation, humidity and salt fog.
This new series offers 50W (VHF) and 45W (UHF) RF power output (selectable Low Power by channel) to get the user’s message through, even under the most demanding of public safety operating conditions.
From the 250 channel capability to the programmable-by-channel bandwidth (12.5 / 25 kHz) to the 2.5 kHz resolution in VHF to the versatile scanning features, including Priority and Group Scan, the VX-5500 Mobile is built for ease of use.
The VX-5500 Series was designed to be networked for multi-band operation so that VHF and UHF can be combined to satisfy even the most complicated multi-agency requirements, including those of federal, state and local government.
A single RF Deck may be controlled by up to three different Control Heads, depending on the installation needs of the user.
In addition to a choice of Control Head configurations, the VX-5500 list of flexible and user-friendly features continues with an easy to read eight-digit, alphanumeric LCD display and seven programmable backlit function keys on the front of the unit.
Feature access customization is easily accomplished at the time of programming.
CommScope unrolls wireless cables
CommScope Inc. has announced the introduction of a complete line of 50-ohm aluminum transmission line cables utilizing its smooth-wall cable design.
Offering wireless customers the advantages of lighter weight, greater flexibility and performance, Extremeflex cables have now joined the CommScope Wireless product line for wireless infrastructure transmission line systems.
With its lightweight aluminum outer conductor-a first for wireless transmission line cable-Extremeflex is made to exacting specifications that provide the conformability and flexibility necessary for demanding installations without sacrificing electrical, mechanical or environmental requirements.
Extremeflex has a smooth-wall design that enhances proper “first-time” connectorization. The smooth-wall design has a triple-bonded architecture with a closed microcell foam dielectric that is nearly watertight once connectors are properly installed.
Unlike traditional corrugated cable, CommScope’s smooth-wall design virtually eliminates water migration, which is believed to be the single biggest reason for cable failure and interruption of site service.
In addition, the excellent electrical properties of aluminum help keep attenuation loss to a minimum while its superior shielding and connector design minimize intermodulation associated with high radio frequency (RF) environments.
CommScope Wireless has shipped in excess of 20 million feet of 50-ohm smooth-wall cable to wireless infrastructure carriers in the U.S. and internationally with proven success in reliability, performance and service.
Extremeflex aluminum 50-ohm cables are available in 1/2″, 7/8″ and 1¼” flexible (FXL) cable designed for difficult installations, and ½” super flexible (SFX) cable for installations with tight or complex routing within the cabinet or shelter.
Cell Reach and Extremeflex smooth wall transmission line cables and WBC braided cable products are approved for outdoor or in-building riser rated applications and backed by a 10-year warranty.
CommScope Wireless is ISO-9001 and TL-9000 certified.
Sinclair launches Yagi antenna
Sinclair Technologies announced the immediate availability of its Black Anodized Yagi antenna.
Designed to provide outstanding durability in all weather conditions and reduce ice loading, the Yagi antennas have a black anodized finish and are ideal for SCADA applications.
Sinclair’s Black Anodized Yagi antennas offer the following features:
- The antennas operate in the 403-512 MHz UHF and 806-966 MHz frequency ranges. Since they do not require tuning, they enable faster and more reliable installations;
- Antennas feature solid 3/8″ elements attached to a seamless aluminum boom with 360-degree welds to protect internal antenna mechanisms from moisture;
- Antennas are mounted for horizontal or vertical polarization using solid aluminum mounting clamps with stainless steel hardware;
- Type N terminator protects the electrical connection from moisture and other extreme weather influences;
- Black anodized finish provides an added layer of protection and maximizes performance and durability under the toughest weather conditions.
Precision unrolls new cables
With the increase in demand for high reliability microwave cable assemblies, Precision Measurements has developed metal jacketed microwave cables using high purity silicon dioxide which resists temperatures in excess of 900c.
Special processing developed by Precision Measurements has resulted in low dielectric constant microwave cable which can be operated in excess of 20 GHZ and provide a low insertion loss and VSWR.
Specially formulated glass developed by Precision Measurements is used in manufacturing microwave connectors which are used in manufacturing microwave cable assemblies which provide a low loss and resistance to extreme temperatures.
The cable assemblies are completely hermetic and provide the best choice for hostile environments.
The performance of Precision Measurements Silicon Dioxide (SIO2) Microwave Cable is unmatched by cables manufactured using PTFE.
Where all Teflon insulated cables change their electrical performance in extreme temperatures, silicon dioxide microwave cable remains stable, indicating an insignificant change in insertion loss and a very small change in phase as a function of temperature.
These unique characteristics provide a solution for precision measurements microwave cable assemblies to be used in various types of aircraft, radars, decoys and electronic counter measure systems.
Precision Measurements has qualified product which is used in M101 gun system in F-16 aircraft.