active area


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active area

[′ak·tiv ′er·ē·ə]
(electronics)
The area of a metallic rectifier that acts as the rectifying junction and conducts current in the forward direction.

active area

The physical part of a chip that contains the transistors, resistors and capacitors, which perform the actual computing and storage operations-- the "action area." Only a few micrometers thick, which is much thinner than a postage stamp, the active area is the top part of the chip. The bottom part is the base layer, which is about a 30th of an inch thick. The chip is bonded to a housing by wires, and the housing is soldered onto the printed circuit board. See chip.

Entirely Magical
No man-made object is more incredible than the chip. Using an Intel i7 CPU as an example, many of its 731 million transistors are switching their state from on to off or off to on every second. In fact, so many transistors are changing that, in total, there are over 200 quadrillion transistor state changes per second. Imagine! More than 200 quadrillion changes per second, second after second, minute after minute, hour after hour, in perfect precision. See transistor.


A Digital Miracle
When people look at a CPU chip, they see an object the size of a small cracker, but its active area is thinner than a postage stamp. CPU chips can be as large as this and as small as the head of a pencil. See microcontroller.
References in periodicals archive ?
Using larger active area crystals allows the analyst to make-up the loss of count rate due to scatter.
It just gives it a transition from the more active areas.
To further speed up the device, the active area (gate) within each transistor is as short as possible, much less than a micron across.
In addition to high quantum efficiency, large active area, internal gain, excellent spatial uniformity and mechanical ruggedness, the availability of integral cooling enables excellent performance stability.
This yield improvement is realized through the protection of the sensor's active area from contamination and the ability to perform wafer-level image testing prior to module assembly, both of which significantly improve camera module yield and dramatically reduce overall cost.
Our customers are introducing new shapes in the active area, so it was imperative that ODP 2006 effectively measure these structures," said Dr.
The color sensor features uniform color filter arrays throughout the photodiode active area, which helps to resolve potential inaccuracies caused by light gradient, optical aperture misalignment and tilting and irregularities of the package surface.
While the 100mm process has proven successful in producing four electrodes with an aggregate active area of 20cm2, large-scale Si processing is mainly performed on 200mm and 300mm wafers which are considered industry wide to provide the most cost effective process efficiencies.
A Chirpan lies in one of the most seismically active areas of Bulgaria a the Chirpan-Plovdiv fault and was virtually razed to the ground in 1928, when a 7 Richter scale earthquake struck the area.
Over the last 12 months, solar cycle 24 has at last started to show some real flare activity as active areas on the Sun begin to develop in complexity and size.
Earthquakes are common in Japan, one of the world's most seismically active areas.
The most active areas of the economy were communications (up 25.

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