Top Stories New Three-Phase Single Chip Energy Meter from Analog Devices The ADE7752 simplifies three-phase meter design at a low cost. With 50 million meters already deployed using Analog Devices Energy ICs (ADE), Analog Devices extends its leadership by introducing the ADE7752 the highly anticipated three-phase electrical energy metering IC with watt-hour output. The ADE7752 is the three-phase counterpart to the widely-used ADE7755 single-phase metering IC. Compatible with a wide range of three-phase grid configurations including direct connect and transformer operated, 3-wire and 4-wire distribution it can be used in three-phase commercial and industrial revenue meters or submeters, three-phase motors or generators, and industrial control and utility automation applications. Similar to other products in the ADE family, the ADE7752 achieves superior accuracy, with less than 0.1 percent linearity error over a dynamic range of 500 to 1, and operates with a single 5 V power supply. Accelerated life expectancy of 60 years and tight manufacturing qualifications ensure continuous performance of meters built with ADE ICs. Single-chip, three-phase meter design is simplified with a built-in analog front end that is optimized for direct interface with a current transformer (CT). Furthermore, average real power in the form of two selectable frequency pulses can directly register energy consumption on a stepper motor counter display. A negative power pin provides an alert if one or more of the three phases has negative active power flow. This indication is useful for detecting improper wiring during meter installation. The ADE7752’s active power accumulation is signed, but it can be set to accumulate based on the sum of the absolute value in each phase to ensure that energy is billed properly under mis-wiring or tampering conditions. Other features of the ADE7752 include no-load threshold and power supervisory functions. A low start-up current of 0.04 percent of basic current (Ib)—ten times better than IEC standards—eliminates any creep effect during a no-load condition, while power supervisory circuitry guarantees correct operation during power-up and power-down. The company's Web site address is http://www.analog.com/. [Reprinted with kind permission from Analog Devices]

 HeadLines

New Technology to Maximize Solar Energy Output New Ultra Low-Power Microcontrollers from Freescale Holtek Releases New USB Audio Microcontroller NXP's New Low Power Real Time Clock New Fast-Charge Multi-Cell Battery Charger Controller New More Powerful Multi-Message Voice Record and Playback Chip

 Other Stories
New High Performance Advanced 8-bit Core SMT8S Microcontroller
New ZigBee Network Processor
New Microchip 18-pin 16-bit Microcontroller
Atmel Releases New picoPower AVR's
New High-Precision Programmable Gain Amplifier
New 802.11n WLAN Module
New Smart Motion Sensor
New RF Transceiver for ZigBee™ Protocol
New 8051 Microcontrollers with USB
Industry’s First 100V Current-Mode Buck Controller
New ARM7 Microcontroller with LCD Support
Real-Time Clock with Crystal
New Low-Power DSP with USB
New Intelligent Motor Control Solutions
New GPS Chipset
New LED Drivers
New Wireless USB Controller
New Class-D Amplifier for Portable Consumer Electronics
New High-Frequency 8 and 16Mb Serial Flash Memories
New Miniature Microcontroller from Freescale
New Microchip C Compiler
New Atmel High-Speed ATTiny's
New PoE Device for use in IP Phones, Security Cameras,
New Design Guide for Instrumentation Amplifiers
New ST7 Software Upgrade
Freescale's New Energy Efficient Lighting System
First Audio Subsystem with Analog and Digital Inputs
First 40MHz PIC Microcontroller
New Atmel tinyAVR Microcontrollers
New PIC12F508 and PIC12F509 Microcontroller's
New 95% Efficient Miniature DC-DC Converter
New MP3 Microcontroller
New Three Phase Energy Measurement IC
Motorola Releases New Flash Microcontroller Range
New Digital Radio Chipset Offering Improved Reception and Performance
New Headphone Amp from ST with 110db Signal to Noise Ratio
TI's New 16-Bit Converter with Six ADC's In One Package