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Dear Sir/Madam
For all of the „poor“ designers of analogue electronics who are at the moment not able to enjoy their well deserved holidays we created this newsletter. Enjoy it despite working in the holiday season!
Wolfgang Patelay
Technical Editor, EPN
Image Controller IC (Epson)
The S2S65A00 image controller IC makes it possible to simultaneously record and transmit images from two cameras. It comes equipped with CF/SD memory, USB 2.0, and an 8-channel analogue to digital converter.
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Temperature-Compensation IC (Intersil)
The ISL21400 digitally programmable voltage reference allows users to set the temperature slope and DC voltage of its output to accurately compensate for temperature drifts elsewhere in the system. Engineers can generate a compensation voltage that will effectively cancel out the native drift of a system in the analogue domain, allowing the use of lower cost components.
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Data Converter IC (Cirrus Logic)
With the introduction of the CS556x/7x/8x family of 16- and 24-bit analogue-to-digital converters, Cirrus Logic is looking to redefine the production method of high-performance industrial data converters. The devices combine the higher bandwidth and low-distortion performance of SAR converters with high resolution and low noise that is the hallmark of delta-sigma ADCs.
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Operational Amplifier IC (Analog Devices)
Manufactured on iCMOS high-voltage industrial-process technology, the AD8663 is a 16V precision, low-noise, rail-to-rail operational amplifier. It addresses the performance, power and cost requirements of portable and battery-operated applications, such as patient monitors, defibrillators, remote industrial controls and optical sensors.
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A Physical Approach to WiFi PHY Design Using Spectrasys
This article by William Clausen from Prowave discusses the architecture and implementation of a signal monitor in the WiFi 2.4GHz band using a new RF system design and simulation approach.
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Measuring Nanoamperes
Measuring low currents can be tricky. Clever analogue design techniques and the right parts and equipment can help. How –shows the EDN cover story by Technical Editor Paul Rako.
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Photodiode Amplifier exhibits one-third the Output Noise of Conventional Transimpedance Amp
A conventional 1-MO transimpedance amplifier has at least 130 nVvHz of output-noise density at room temperature. You can consider the 130 nV as the theoretical noise floor limit of the amplifier because that is the noise density of the 1-MO resistor itself. Any noise in the op amp can only make things worse. Cooling the resistor to 77.2K, the temperature of liquid nitrogen, quiets it to 65 nVvHz, provided that it survives, but is that the only option? Can you beat the 130-nV theoretical noise floor without cooling? The Design Idea by Glen Brisbois from Linear Technology shows one way of doing this.
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Analog Divider uses few Components
Although microprocessors may offer calculations of greater precision, there's still room for analogue-computation techniques in a designer's circuit collection. As an example, the analogue-divider circuit in the Design Idea by David Cripe offers reasonably good accuracy for the price of a few inexpensive components.
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4| Book of the Month |
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Introduction to Analogue Electronics, by Bryan Hart
This new text takes the reader from the very basics of analogue electronics to an introduction of state-of-the-art techniques used in the field. It is aimed at all engineering or science students who wish to study the subject from its first principles, as well as serving as a guide to more advanced topics for readers already familiar with the subject.
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