Analog Devices UG-442 User Manual
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Analog Devices UG-442 User Manual

Analog Devices UG-442 User Manual

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One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 •
Evaluating the
AD5422

FEATURES

Full-featured evaluation board for the
On-board reference
Link options
Direct hook-up to USB port of PC
PC software for control

EVALUATION BOARD DESCRIPTION

The EVAL-AD5422 is a full-featured evaluation board that is
designed to allow the user to easily evaluate all features of the
16-bit
AD5422
current source and voltage output digital-to-
analog converter (DAC). All of the
at on-board connectors for external connection. The board can
be controlled by two means, via the on-board connector (J8) or via
the USB port of a Windows® 2000-, NT®-, XP®-based PC using the
AD5422
evaluation software. The default setup is for control via
the USB port.
Two separate packages exist for the
40-lead LFCSP); therefore, two corresponding evaluation boards
are available.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Single Channel, 16-Bit, Current Source and Voltage Output
DAC, HART Connectivity
AD5422
AD5422
pins are accessible
AD5422
(24-lead TSSOP and

FUNCTIONAL BLOCK DIAGRAM

USB
EXT REF
CONNECTOR
CONTROLLER
CY7C68013A
SELECT
PIN
HEADER (J8)
Rev. C | Page 1 of 16

Evaluation Board User Guide

DEVICE DESCRIPTION

The
AD5422
is a low cost, precision, fully integrated 16-bit
converter, offering a programmable current source and
programmable voltage output designed to meet the requirements
of industrial process control applications. The output current
range is programmable to 4 mA to 20 mA, 0 mA to 20 mA, or an
overrange function of 0 mA to 24 mA. The voltage output is
provided from a separate pin that can be configured to provide
0 V to 5 V, 0 V to 10 V, ±5 V or ±10 V output ranges; an overrange
of 10% is available for all ranges. Analog outputs are short- and
open-circuit protected and can drive capacitive loads of 1 μF. The
device is specified to operate with a power supply range from
10.8 V to 40 V. The output loop compliance is 0 V to AV
Complete specifications for the
AD5422
data sheet and should be consulted in conjunction
with this document when using the evaluation board.
POWER SUPPLY INPUTS
5V
VOLTAGE
REFERENCE
REFIN
REFOUT
AD5422
INPUT/
OUTPUT
ADC
I TO V
Figure 1.
UG-442
www.analog.com
DD
AD5422
are available in the
V
OUT
I
OUT
− 2.5 V.

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Summary of Contents for Analog Devices UG-442

  • Page 1: Features

    Evaluation Board User Guide UG-442 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 Evaluating the AD5422 Single Channel, 16-Bit, Current Source and Voltage Output DAC, HART Connectivity FEATURES...

  • Page 2: Table Of Contents

    Change to Control Register Section and Added Figure 4; Renumbered Sequentially ..............7 7/12—Rev. 0 to Rev. A Document Title Changed from EVAL-AD5422 to UG-442 ................. Universal Changes to Evaluation Board Description Section ...... 1 Changes to Figure 3 ................6 Changes to Figure 4 ................8 Changes to Figure 5 ................

  • Page 3: Evaluation Board Hardware

    Evaluation Board User Guide UG-442 EVALUATION BOARD HARDWARE POWER SUPPLIES Default Link Option Setup The following external supplies must be provided: The default setup is for control by the PC via the USB port. The • 5 V between the 5 V and 0 V inputs for the digital supply default link options are listed in Table 1.
  • Page 4 UG-442 Evaluation Board User Guide Table 4. Link Options Link No. Description This link selects the state of the CLEAR SELECT pin (when the evaluation board is configured for external control). Position A ties the CLEAR SELECT pin to 0 V.
  • Page 5 Evaluation Board User Guide UG-442 Link No. Description LK15 This link selects the voltage reference source. Position A selects the internal voltage reference of the AD5422 as the voltage reference source. Position B selects an external source that can be applied at Connector J3.

  • Page 6: Changes To Figure 3

    AD5422 evaluation kit includes self-installing software on a CD. The software is compatible with Windows 2000/NT/XP. If From the Start menu, select Analog Devices – AD5422/ the setup file does not run automatically, run the setup.exe file AD5422 Evaluation Software. The main window of the from the CD.

  • Page 7: Change To Control Register Section And Added Figure 4; Renumbered Sequentially

    Evaluation Board User Guide UG-442 The main window is divided into eight sections: Input Register, Reset Register Status Register, Control Register, Reset Register, Clear/Clear The sole function of the Reset Register section is to allow the Select Pins, Read/Write Registers, Measure Output Voltage/ AD5422 to be reset to its power-on state.

  • Page 8: Changes To Figure 4

    UG-442 Evaluation Board User Guide EVALUATION BOARD SCHEMATICS AND ARTWORK Figure 5. AD5422 TSSOP Evaluation Board Schematic of the Controller Circuitry Rev. C | Page 8 of 16...

  • Page 9: Revision History 10/13-Rev. B To Rev. C Change To Figure 6

    Evaluation Board User Guide UG-442 Figure 6. AD5422 TSSOP Evaluation Board Schematic of the AD5422 Circuitry Rev. C | Page 9 of 16...

  • Page 10: Inserted Figure 6; Renumbered Sequentially

    UG-442 Evaluation Board User Guide Figure 7. AD5422 LFCSP Evaluation Board Schematic of the Controller Circuitry Rev. C | Page 10 of 16...

  • Page 11: Change To Figure 8

    Evaluation Board User Guide UG-442 Figure 8. AD5422 LFCSP Evaluation Board Schematic of the AD5422 Circuitry Rev. C | Page 11 of 16...

  • Page 12: Changes To Figure 8 To Figure 10

    UG-442 Evaluation Board User Guide Figure 9. AD5422 TSSOP Evaluation Board Component Placement Figure 10. AD5422 TSSOP Evaluation Board Solder Side PCB Figure 11. AD5422 TSSOP Evaluation Board Component Side PCB Rev. C | Page 12 of 16...

  • Page 13: Inserted Figure 11 To Figure 13

    Evaluation Board User Guide UG-442 Figure 12. AD5422 LFCSP Evaluation Board Component Placement Figure 13. AD5422 LFCSP Evaluation Board Solder Side PCB Figure 14. AD5422 LFCSP Evaluation Board Component Side PCB Rev. C | Page 13 of 16...

  • Page 14: Changes To C3, Supplier/Number Column, Table 5

    UG-442 Evaluation Board User Guide ORDERING INFORMATION BILL OF MATERIALS Table 5. Reference Designator Description Supplier/Number 16-bit current source DAC (TSSOP Package) Analog Devices/AD5422BREZ 16-bit current source DAC (LFCSP Package) Analog Devices/AD5422BCPZ 5 V voltage reference Analog Devices/ADR435ARZ 3.3 V low dropout voltage regulator Analog Devices/ADP3303ARZ-3.3...
  • Page 15 Evaluation Board User Guide UG-442 NOTES Rev. C | Page 15 of 16...
  • Page 16 By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement.

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