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Maxim > Design Support > Technical Documents > Application Notes > A/D and D/A Conversion/Sampling Circuits > APP 4359
Maxim > Design Support > Technical Documents > Application Notes > Prototyping and PC-Board Layout > APP 4359
Keywords: high-performance, multichannel, simultaneous-sampling, ADCs
APPLICATION NOTE 4359
Design Guidelines for High-Performance,
Multichannel, Simultaneous-Sampling ADCs in Data-
Acquisition Systems (DAS)
By: Joseph Shtargot, Strategic Applications Engineer
Mar 03, 2009
Abstract:
This application note
will help the designer of a high-performance, multichannel, simultaneous-
sampling data-acquisition system (DAS). It explains how to select the proper components and place them on
the PCB to achieve optimum performance. Maxim's MAX1308, MAX1320, and MAX11046 simultaneous-
sampling ADCs are featured. Test data illustrate the benefits of following the guidelines.
Introduction
Many advanced industrial applications require the use of high-performance, simultaneous-sampling,
multichannel ADCs. Consider as examples an advanced power-line monitoring (Figure 1) or contemporary
three-phase motor-control system (Figure 2). These applications require accurate simultaneous, multichannel
measurement over a wide dynamic range of ~70dB to 90dB (depending on the application). A sample rate of
16ksps or higher is common.
The MAX1308, MAX1320, and MAX11046 DAS devices include eight independent simultaneous-sampling input
channels and fast successive-approximation ADCs in a single package. To achieve the devices' specifications
and to maximize the performance, the designer must take proper care with system architecture, component
selection, and PCB layout.
Typical Examples of DAS Architecture
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