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AD5421CREZ Fiches technique(PDF) 1 Page - Analog Devices |
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AD5421CREZ Fiches technique(HTML) 1 Page - Analog Devices |
1 / 12 page Evaluation Board User Guide UG-250 One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com Evaluation Board for 16-Bit, Serial Input, Loop-Powered 4 mA to 20 mA DAC PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. A | Page 1 of 12 FEATURES Full-featured evaluation board for the AD5421 Link options PC control in conjunction with Analog Devices, Inc., system demonstration platform (SDP) PC software for control EQUIPMENT NEEDED DC power supply unit SDP for PC control (EVAL-SDP-CB1Z) Voltmeter or ammeter DOCUMENTS NEEDED AD5421 data sheet SOFTWARE NEEDED AD5421 evaluation software EVALUATION BOARD DESCRIPTION The EVAL-AD5421 is a full-featured evaluation board, designed to allow the user to easily evaluate all features of the AD5421 loop-powered 4 mA to 20 mA DAC. The AD5421 pins are accessible at on-board connectors for external connection. The AD5421 evaluation board is controlled via the PC’s USB port in conjunction with Analog Device’s system demonstration platform board. The SDP board allows the evaluation board to be controlled through the USB port of a Windows® XP (SP2 or later) or Vista-based (32-bit) PC using the AD5421 evaluation software. The AD5421 serial interface is also accessible at the testpoint connections on the board. DEVICE DESCRIPTION The AD5421 is an integrated device designed for use in loop- powered 4 mA to 20 mA smart transmitter applications. The AD5421, in a single chip, provides a 16-bit DAC and current amplifier for digital control of the loop current, a voltage regulator to power the entire transmitter, a voltage reference, fault alert functions, flexible SPI-compatible serial interface, gain and offset adjust registers as well as other features and functions. Complete specifications for the AD5421 are available in the AD5421 data sheet available from Analog Devices and should be consulted in conjunction with this document when using the evaluation board. FUNCTIONAL BLOCK DIAGRAM SYSTEM DEMONSTRATION PLATFORM BOARD PC USB PORT LOOP+ LOOP– DIGITAL ISOLATION AD5421 EVAL-AD5421SDZ Figure 1. |
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