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PIK EDA 80/60 S_Datasheet PDF

时间:2021-06-14 01:05:06 来源:网络整理编辑:GeneSiC Semiconductor

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The transceiver lacks extra features that would help clean up a signal when it is transmitted and received, known as pre-emphasis and equalization. Kopec said there's no pressing need to include these exotic” features because the signal eye is clean enough to meet Ethernet and more-stringent Sonet jitter specifications in many instances.

The transceiver lacks extra features that would help clean up a signal when it is transmitted and received, known as pre-emphasis and equalization. Kopec said there's no pressing need to include these exotic” features because the signal eye is clean enough to meet Ethernet and more-stringent Sonet jitter specifications in many instances.

Bluetooth SIG's McCamon doesn't believe it is necessary to list profiles on boxes, either. Nor does he think that the Bluetooth trade association is responsible for legislating which profiles should be supported in each product.” It is the burden of product managers to decide that, he said.

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PIK EDA 80/60 S_Datasheet PDF

California Micro Devices said it has introduced a single-chip CMOS multiplexer that replaces as many as five discrete diodes, reducing board space needs by up to 60% while easing design of keypad switches and joysticks in wireless handsets.

CMD's CM2500-05QF multiplexer allows keypad switches to drive two sense lines each instead of one, making it possible to assign more than one function to each key or switch. The device, housed in a low-profile 16-lead QFN (quad flat pack no-lead) package, simplifies trace routing and requires no resistors or other components for operation, according to the company.

We're trying to shrink the amount of space needed with an integrated solution,” said Wayne Szetoo, product marketing manager for the Milpitas, Calif., semiconductor supplier. With new handsets, our customers are crammed for space.”

PIK EDA 80/60 S_Datasheet PDF

The multiplexer can be connected to devices with separate keypad and joystick circuits, allowing design flexibility. WIth other multiplexers, you can handle only one set of signals and thus require another multiplexer,” said Szetoo, adding that the part eliminates the cost and reliability issues of software-based multiplexers.

A chipset I/O interface optimizes the multiplexer for low-core voltage chipsets. Typical voltage drop is 10mV from input to output on each channel. By contrast, multiplexers that use Schottky diodes exhibit voltage drops as high as 400mV, according to Szetoo.

PIK EDA 80/60 S_Datasheet PDF

WIth wireless chipsets going to lower voltages, Schottky diodes exhibit too much of a voltage drop, causing high signals to be misread as low or undefined,” he said.

In quantities of 1,000, CMD's multiplexer lists for 50 cents. Samples are available, with volume production scheduled for August.

Im Gegensatz dazu soll das neue IBM-Angebot in nur sechs Monaten Marktreife erlangen und laut Reeves nur rund eine Million Dollar kosten. Damit haben wir die Produkt-Vorlaufzeit auf ein halbes Jahr beschrnkt”, erklrt Reeves.

Allerdings sei die neue ASIC-Serie nicht f¼r anspruchsvolle Highend-Lsungen gedacht, wie zum Beispiel ASICs f¼r Router. Die Spitzenprodukte aus IBMs traditionellem ASIC-Geschft sollen rund sieben Millionen Gates an Bord haben. Indes ist schon mehrfach durchgesickert, dass IBM bereits Bausteine mit hheren Dichten entwickelt hat.

F¼r sein halbkonfektioniertes” Geschft knnte IBM standardhnliche Chips mit zwei bis drei Millionen Gates in petto haben, die dazu noch genug Platz f¼r die Entwicklung von Intellectual Property mit 500000 bis einer Million Gates bieten. Eine derartige Technologie wre damit beispielsweise f¼r Steuerungs-Prozessoren, einfache Switch-IC, Festplatten-Controller und hnliche Produkte geeignet.

IBMs Kampfansage

Reeves deutete an, dass IBMs neues Portfolio eine Konkurrenz zu den so genannten strukturierten ASICs” darstellen werde, obwohl die IBM-F¼hrung diese Technologie ausdr¼cklich ablehne. Reeves dazu: F¼r derart personalisierte Gate-Arrays gibt es nur einen begrenzten Markt.”