Serving the Electronic Design Community Since 1956
Op Amp Combines High Voltage and High Accuracy
March 19, 2008 12:31 pm | Product Releases | CommentsTexas Instruments introduced a precision power operational amplifier (op amp) which operates on supplies up to 100V and provides a high output current of ±50mA with a 150 mA short circuit limit. The OPA454 is unity-gain stable and can track fast moving signals since it has a slew rate of 10V/µs and gain-bandwidth product of 2.5 MHz. It features a single or dual supply of ±4V (8V) to±50V (100V).
Linear Regulator Cuts MSP430 System Standby Power In Half
March 19, 2008 11:17 am | Product Releases | CommentsConsuming what is presented as the lowest quiescent current in the industry at 500nA, the Texas Instruments' TPS780xx LDO also has a voltage select pin for designers to dynamically shift to a lower voltage level in a MSP430 microcontroller-based battery-powered design when the microprocessor is in sleep mode to cut power by as much as half. Stable with any output capacitor greater than 0.1µF
Designing Appliances that Communicate
March 19, 2008 10:03 am | by Bob Gohn, vice president marketing, Ember Corporation | Articles | CommentsThe need for our appliances to be networked is rapidly emerging, and fortunately, so are the means with the advent of ZigBee low-cost wireless platforms.
Miniature Signal Conditioning IC Enhances Optical Sensors' Proximity and Object Detection
March 19, 2008 7:55 am | Product Releases | CommentsAvago Technologies today announced a miniature single-chip signal conditioning IC that is said to enhance the performance and robustness of optical sensors used for proximity or object detection in consumer and industrial applications. When used with optical proximity sensors, the APDS-9700 signal conditioning IC provides
Synchronous Data Acquisition Products Offer High-speed Performance Over Ethernet
March 19, 2008 6:54 am | Product Releases | CommentsDATAQ Instruments announced the DI-785 and DI-788 Ethernet data acquisition models. Multiple units, separated by over 100m, can synchronize at samples rates as high as 180 KHz per unit by simply daisy-chaining ordinary CAT-5 cables between them. With up to 32 fully isolated channels per box, and support for as many as eight simultaneously connected boxes
Switching Regulators are Pin Compatible
March 19, 2008 6:27 am | Product Releases | CommentsMEGA Electronics’ M78 0.5A and 1.0A switching regulators are suited to replace 78xx linear regulators and are pin compatible. With efficiencies up to 96 percent very little energy is wasted as heat, eliminating the need for heat sinks and reducing overall weight. The regulators include a thermal shutdown, short circuit protection with continuous automatic recovery and low ripple and noise. Normal operating temperatures are from
Front End Supply Crams 400W into 1U Without Added Airflow
March 19, 2008 5:57 am | Murata Power Solutions Inc. | Product Releases | CommentsIntended for use as a front-end supply in a distributed power architecture requiring 12V bulk power, the CEF400-112C AC/DC supply has an integral fan to enable it to deliver 400W continuously in a 1U package from 0°C to +50°C without additional external airflow. The 4.0" × 7.0" × 1.55" PFC device accepts from 85 to 264VAC or 120 to 300V DC and provides a 12V main with a standby 5V auxiliary output
IGBTs Exhibit High Power Dissipation in Solar Inverter Apps
March 18, 2008 11:09 am | International Rectifier | Product Releases | CommentsUsing the latest-generation field-stop trench technology to reduce conduction and switching losses, the IRGB40xxDPbF family of 600V IGBTs from International Rectifier reduces power dissipation by up to 30percent in UPS and solar inverter applications of up to 3 kW. The devices are optimized for switching at 20 kHz with a collector-to-emitter saturation voltage from 1.95V to 2.20V and currents from 4A to 48A with a internal soft-recovery diodes
Precision Amplifier Offers 20 fA Guaranteed Input Bias Current
March 18, 2008 10:58 am | Product Releases | CommentsNational Semiconductor introduced the LMP7721 precision amplifier 20 fA guaranteed input bias current at room temperature and over the extended temperature range of -40°C to 125°C. According to the company, the device yields maximum system sensitivity and accuracy from photodiode and high-impedance sensors and is suited for improving sensitivity and accuracy in battery operated portable applications
RGB Color LEDs Offer 150° Viewing Angle
March 18, 2008 6:23 am | Product Releases | CommentsConsisting of 3 separate emitters in a 1204-size SMT package (3.2 x 1.0 x 1.5mm) compatible with automated assembly as well as IR and vapor-phase solder reflow, the OVSRRGBCC3 RGB LED provides adjustable-color llight with a viewing angle of 150°. Deployable in a top- or side-mount orientation with a white diffused lens
Low Profile MIL-STD-1553 Dual Transformer with Side-by-side Configuration
March 18, 2008 5:51 am | Product Releases | CommentsBeta Transformer Technology Corporation introduced the DSS-2000 dual transformer with and ultra low profile 0.130” maximum height. The device has a side-by-side configuration and is available in ratios compatible with 3.3V, 5.0V, 12V, and 15V transceivers. The 0.130” height makes suitable for today’s smaller MIL-STD-1553 board topologies and has ratios to meet both long and short stub applications
SMT LEDs Present Sub-Millimeter Profile
March 17, 2008 11:28 am | Product Releases | CommentsProvided in a CLCC-6 FlatPackage configuration, the VLMW621 family of warm-white SMT LEDs is presented as having the lowest profile (0.9mm high) of its type. The ceramic-encased InGan devices are available with luminous intensities from 1800mcd to 7100mcd and thermal resistances of 40K/W junction to pin and 90K/W junction to ambient. The devices have a 140 mA forward current, a 4.3V maximum forward voltage, and 650 mW of power dissipation
Collaborative Equalization Methodology Combines Software and Hardware
March 17, 2008 9:11 am | Product Releases | CommentsUseful for applications from professional sound reinforcement to consumer audio electronics, a collaborative acoustic control methodology developed by Quickfilter Technologies and Real Sound Lab enables engineers to control frequency response for system performance optimization. Combining CONEQ™ (CONvolution EQualizer) software-based technology with the QF1D512 programmable digital filter, the approach generates a speaker transfer function
Charge Pump Drives up to Six LEDs
March 16, 2008 1:49 pm | Product Releases | CommentsCatalyst Semiconductor, Inc. introduced the CAT3637 fractional charge pump LED drivers which address the requirements for high-efficiency and easy LED programming in portable devices. It is optimized for applications with one bank of five or six identical LED channels, a typical configuration for larger LED screen portable products. It incorporates a simplified version of the company’s 1-wire EZDim interface, which supports 16 output power levels, from from zero to 30 mA full brightness
Blind Hollow Shaft Encoders Reduce Potential for Contamination
March 16, 2008 1:43 pm | Product Releases | CommentsVFS 60 blind hollow shaft encoders from Sick Stegmann, Inc. feature a unique nickel code disc that provides robust operation in harsh industrial environments, and tolerance to temperatures as high as 100ºC. They are IP65 rated and deliver from 1ppr to 10,000 ppr in an industry-standard 60 mm housing. The ball bearings that support the encoder shaft are spaced 30 mm apart for excellent concentricity (± 0.3/± 0.1 mm radial; ± 0.5/±0.2 mm axial) and robustness, and minimum encoder vibration
