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IDT extends its dual port range

IDT’s dual port range has been extended with the addition of what it says are the industry’s first 2.5V x8, x9, x16 and x18 synchronous and asynchronous devices. Amongst the benefits claimed are a reduction in power consumption. The devices offer buffering, storage and bus isolation features and are pin compatible with previous 3.3 and 5V offerings. Synchronous performance is claimed to 83MHz, whilst asynchronous write cycles can be as little as 20ns. There are eight asynchronous devices: 8k and 16k x 8; 8k and 16k x 9; 4k and 8k x 16; and 4k and 8k x 18. Synchronous parts are 8k x 9, 16k x 9, 4k x 18 and 8k x 18. All come in a choice of tqfp or bga.

High stability lv-pecl oscillators

Amongst other recently released oscillators is the F4600 series from Fox Electronics, offering stabilities at up to ±20ppm. The 3.3V lv-pecl oscillators are best suited to telecommunications applications. Featuring a standby function for low power consumption in sleep mode, the devices come in a standard temperature range of –10 to 70oC and an optional –40 to 85oC in most models. The frequency range is 75 to 170MHz; input current is 60mA maximum.

Crystal oscillators for extreme accceleration environments

C-MAC MicroTechnology has brought out a range of temperature compensated crystal oscillators that can withstand acceleration up to 20,000g! This level of extreme acceleration and the requirement for very high stability is typical of a ‘smart munition’ mounted guidance system. According to C-MAC, the key feature when developing missile guidance systems is the time taken to acquire the gps signal after the shock of launch. The ceramic CFPT-9025, measuring 9.22 x 7.57 x 3mm has a stability specification of ±1ppm. The range also includes oscillators that meet other specifications, including ones which offer a stability of ±0.5ppm over a less demanding temperature range than the military requirement.

OKI's multifunction speech synthesisers

A family of multifunction speech synthesisers, with features such as independent channel volume control, selectable sampling frequencies, internal d/a converter and a smoothing filter, has been developed by OKI Electric. The devices suit application in warning and voice guidance systems and car sound effects. The ML2252/54, ML22Q54 and ML2240 are, respectively, on board mask rom, flash and external rom versions, with the two previous models providing two channels and the latter providing four channel mixing functions. The 1Mbit/4Mbit ML2252/54 device offers independent control of each channel from –60dB to 0dB in 2dB increments. A range of sampling features combined with five algorithms allows users to optimise playback and sound quality. With a 4Mbit flash memory, the ML22Q54 suits prototyping whilst the ML2240stereo speech synthesiser is designed for very high end uses, such as car navigation and game machines.

Trident & Review Display Systems' tft lcds

TFT lcds are becoming available in every size and specification. Trident Displays has reduced the price of 17in Samsung smart panels by 15%. Its range consists of two xga resolution 15in panels and two 17in panels – one with an analogue vga interface and the other with analogue and composite video. The panels are sold complete with interface card and inverter. Each is supplied as an oem product – the display can be customised to give developers to option of personalising their designs. Meanwhile, Review Display Systems has introduced 6.3 and 10.4in displays for hand held pcs, marine navigation and gps systems. These xga displays feature amorphous silicon technology, said to improve image contrast. Long life ccfl back lights also contribute to the contrast. The 6.3in NL10276BC12-02 has an active area of 178.8 x 126.8 x 12mm, supports 16million colours and offers a screen brightness of 250cd/m2. Interfacing to the panel is accomplished via an on board lvds receiver. Both panels are supplied as a kit, incorporating all necessary cables, a range of single board computers and analogue boards supporting vga, video and picture in picture options.

Chometrics' conductive plastic shielding materials

The Premier range of conductive plastic shielding materials has been introduced by Chomerics. The materials consist of nickel plated carbon fibres integrated into an injection moulded thermoplastic resin. Specifically developed for high performance emi shielding and grounding applications, Premier gives weight, cost and space savings as well as greater design freedom compared to metal cans and existing shielded plastic housings, claims the company.

Microchip's 32bit MPLAB ide

Microchip is looking to facilitate PICmicro system development with the 32bit MPLAB integrated development environment. Targeted at PIC16, PIC18 and PICdsp applications, the system supports source code editing, project management, machine code generation and device programming.

LynuxWorks's LynxOS version 4

With Linux gaining ground in the embedded computing market, there is a need for wider support and two companies have responded. LynuxWorks has made available LynxOS version 4, said to be the first time a Linux compatible real time operating system has been delivered for ARMv4T and v5TE compliant processors. Dr Inder Singh, the company’s ceo, noted: “As more designers build feature intensive applications for ARM core based products, they can enjoy the benefits of a real time operating system and the flexibility of open standards in the Linux environment.”

30V power mosfet for non isolated dc/dc converter

Meanwhile, Hitachi and International Rectifier have been expanding their offerings in the higher power sector. Hitachi has unveiled a 30V power mosfet with chips for both sides of a non isolated dc/dc converter. The package has two mosfets – one with a Schottky barrier diode – and says the device is suited to non isolated dc/dc converter applications. The HAT2180RP converts a 5 to 20V supply into a 1.5 to 5V output. Higher speed and lower on resistance are claimed. IR’s L Series hexfet power mosfet is said to obviate the need for series Schottky and anti parallel high voltage diodes, reducing part count and improving power density. Targeted at zero voltage switching applications in circuits running at up to 250kHz, the 500V L Series has five members.

16bit microcontroller from Hitachi

A 16bit microcontroller from Hitachi suits airbag and chassis control applications. Operating at up to 24MHz, the H8S/2628F adds a CAN interface to the existing product line. There is also a synchronous serial communications interface, allowing it to communicate with in car peripherals. The H8S/2628F, based on the H8S/2000 cpu core, provides a minimum instruction execution time of 41.6ns at 24MHz. Incorporating 128kbyte of flexible zero turn around time flash memory, it can be programmed or erased on a single power supply. Supplied in a 100pin package, the device comes in three levels of support for data transfer – 8, 16 and 32bit. Meanwhile, Hitachi has released the SH-4 microprocessor for telematics and industrial systems. Based on the SH-4 risc cpu, the device offers a processing performance of 360MIPS and 1.4GFLOPS at 200MHz. The SH7760 includes audio codec and serial sound interfaces to enable hands free operation. It also has an HCAN2 interface to give it standard in vehicle compatibility and usb host interface.

Tiny real time clock module

Claimed as the smallest real time clock module currently available, Epson’s RX-8564CF saves board space and reduces power consumption. The module houses a 32kHz tuning fork type crystal and communicates using the i2c bus. Along with timer and alarm functions, the module produces a 32.768kHz output. With an output enable option, this signal can be used to drive additional ics if required. Running from a power supply in the range 1.8 to 5.5V, the device draws 275nA at 3V.

1.9in stn lcd module from Densitron

With a white backlight providing a brightness of 45cd/m2, a 1.9in stn lcd module from Densitron can display up to 4096 colours. Measuring 38.5 x 51.9 x 6.2mm, the DV-CS128160 F19 module has a viewing area of 33 x 42mm and supports images with a resolution of 128 x 160 pixels. The module features a transflective screen, plus necessary drivers, and a dc/dc converter. Running from a 3.3V supply, the device is said to be suited to applications in hand held equipment.

15.1in lcd chassis monitor

Catering for hazardous environments is the latest 15.1in lcd chassis monitor from Kent Modular Electronics. The module, available from Electro-Flow Controls (EFC), suits the ever burgeoning CCTV market and data monitors. The industrial specification monitor has been integrated into a slim stainless steel enclosure rated to IP65 minimum by EFC. The enclosures provided by EFC are viewed through toughened glass windows, so the 15.1in lcd provides an 800cd/m2 light output – four times that of a typical lcd. Another feature is a Eexp purge and pressurisation unit which has been mounted externally, making the monitor suitable for operation in Zone 1 and Zone 2 hazardous areas. Typical applications include being used in drilling consoles for offshore systems and process control systems.

High efficiency dc/dc converters

High efficiency dc/dc converters suiting a range of applications are being unveiled by a number of companies. Ultimate Renaissance boasts a 20W single output device with an output efficiency of 83% and an output ripple of 50mV. The AET04, produced by Asdec, come in voltages of 18 to 36V dc or 36 to 72V dc. The device comes with short circuit protection with a continuous power cycle, offers a transient response time of 250us and voltage trims from 90 to 110%. It operates at between –40 and 105oC and meets UL, CSA and TUV requirements. Rohm’s latest dc/dc converters offer efficiencies up to 93% and can operate without a heatsink. The BP523xxxA series comes in current options of 2, 3 and 4A, and provides for step down from a 5V input to either 2.5 or 3.3V. Typical output voltage ripple is 33mV. For inductor free pump dc/dc converters, Microchip is shipping the MCP1252 and MCP1253 – providing a fixed 3.3 or 5.5V output or an adjustable output voltage of 1.5 to 5.5V from a 2.7 to 5.5V input source. The devices have a drain current of 60uA, a shutdown current of 0.1uA and a power good output that can detect an out of regulation situation with an output voltage accuracy of ±2.5% maximum. The MCP1252 has an operating frequency of 650kHz, avoiding critical system frequencies, whilst the MCP1253 operates at 1MHz – minimising the external component size. Finally, 35W sub quarter brick dc/dc converters from BTCPower are available from Hunter Electronic Components. Input voltages range from 18 to 36V or 36 to 75V. The device, which offers an efficiency of up to 90%, has output voltages of 1.5, 1.8, 2.5, 3.3, 5 or 12V.

APW 64bit CompactPCI/PSB backplane

APW Electronic Solutions has added 8 and 21 slot models to its range of 64bit CompactPCI/PSB backplanes. Conforming to PICMG 2.16 specifications, the backplanes feature an updated StealthBridge – a transparent rear plug up bridge. The eight slot variant has one DIN M power slot and one fabric slot, whilst the 21 slot option comes with two fabric slots. APW adds that, because the 21 slot option is a full 19in wide device, power on is via Power Bugs. Scaleable bit rates of 10, 100 or 1000Mbit/s per slot are supported by the PSB specification, whilst the CompactPCI specification allows for hot swap.

PIAGP cpu backplane architecture

According to Wordsworth, PIAGP is the latest concept in cpu backplane architectures, enabling direct support for advanced graphic processors (AGP) through a dedicated AGP slot. Whilst maintaining modularity and maintainability, PIAGP is said to overcome the inability of some PICMG systems to exploit the potential of high performance graphics chips. Wordsworth is offering PIAGP systems with Pentium 3 and Pentium 4 processors, along with a range of backplance configurations and enclosures. Up to 20 slots can be supported, including ISA and PCI boards.

Brain Boxes' Bluetooth adapters

An addition to the Brain Boxes’ range of Bluetooth adapters provides an interface between RS232 and Bluetooth devices. The BL-521 is a Class 1 Bluetooth radio, providing for connectivity over distances of up to 100m. According to the developer, the device is not restricted to Windows pc based applications, which it claims will enable Bluetooth functionality to be included in any device which has an RS232 interface. Examples include wireless data transmission in shops, factories and offices. Supplied with a 75m cable, the BL-521 comes with the necessary software. Brain Boxes can also supply the device as a module, allowing it to be plugged into a host motherboard.

3G gets real

3G hardware and software rivals take a reality check as they begin to stake out their places in a market which begins to gather pace. John Walko reports.

Bus becomes trace flexible

As New Electronics went to press, Rambus was presenting details of its latest parallel bus logic interface family code named Redwood to Intel's Developers Forum.

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