Analog Devices EVAL-AD5141DBZ User Manual

Analog Devices EVAL-AD5141DBZ User Manual

Evaluating the ad5141 digital potentiometer

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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 • www.analog.com

FEATURES

Full featured evaluation board in conjunction with low
voltage digiPOT motherboard (EVAL-MB-LV-SDZ)
Various test circuits
Various ac/dc input signals
PC control via a separately purchased system demonstration
platform
(SDP-B
or SDP-S)
PC software for control

PACKAGE CONTENTS

EVAL-AD5141DBZ
board
EVAL-MB-LV-SDZ motherboard
CD that includes
Self-installing software that allows users to control the
board and exercise all functions of the device
Electronic version of the
Electronic version of the
Figure 1. Digital Picture of Evaluation Board with Low Voltage DigiPOT Motherboard and System Demonstration Platform
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Evaluating the
AD5141
AD5141
data sheet
UG-473
user guide
EVAL-AD5141DBZ
Evaluation Board User Guide
Digital Potentiometer

GENERAL DESCRIPTION

This user guide describes the evaluation board for evaluating the
AD5141—a quad-channel, 256-position, nonvolatile memory,
digital potentiometer. With versatile programmability, the
allows multiple modes of operation, including read/write access
in the RDAC and EEMEM registers, increment/decrement of
resistance, resistance changes in ±6 dB scales, wiper setting read-
back, and extra EEMEM for storing user-defined information,
such as memory data for other components or a lookup table.
The
AD5141
supports a dual-supply ±2.25 V to ±2.75 V operation
and a single-supply 2.3 V to 5.5 V operation, making the device
suitable for battery-powered applications and many other appli-
cations. In addition, the
I
2
C or SPI serial interface. The
in single-supply or dual-supply mode and incorporates an internal
power supply from the USB.
Complete specifications for the
AD5141
data sheet, which is available from Analog Devices, Inc.,
and should be consulted in conjunction with this user guide
when using the evaluation board.
WITH MOTHERBOARD AND
Rev. 0 | Page 1 of 20
AD5141
can be configured as a versatile
EVAL-AD5141DBZ
AD5141
part can be found in the
SDP-S
UG-473
AD5141
can operate

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Summary of Contents for Analog Devices EVAL-AD5141DBZ

  • Page 1: Features

    Complete specifications for the AD5141 part can be found in the AD5141 data sheet, which is available from Analog Devices, Inc., and should be consulted in conjunction with this user guide when using the evaluation board. EVAL-AD5141DBZ WITH MOTHERBOARD AND SDP-S Figure 1.
  • Page 2: Table Of Contents

    Package Contents ................1 Installing the Software ..............8 General Description ................. 1 Software Operation ..............10 EVAL-AD5141DBZ with Motherboard and SDP-S ..... 1 Evaluation Board Schematics and Artwork ........ 11 Revision History ................2 Motherboard ................11 Evaluation Board Hardware ............3 Daughter Board ................
  • Page 3: Evaluation Board Hardware

    SDP board using a PC. The dual power supplies. functions of these link options are described in detail in Table 3 EVAL-AD5141DBZ evaluation board can be powered either through Table 11. from the SDP port or externally by the J1 and J2 connectors, as described in Table 1.
  • Page 4: Digital Interface

    UG-473 Evaluation Board User Guide DIGITAL INTERFACE The output voltage is defined in Equation 1. EVAL-AD5141DBZ can be configured as an I C or SPI RDAC1 − × digital interface, depending on the position in the A2 jumper (see Table 4).
  • Page 5 Evaluation Board User Guide UG-473 AC Signal Attenuation Table 9. AC Signal Attenuation Link Motherboard Links The RDAC can be used to attenuate an ac signal, which must be Maximum Voltage AC Signal provided externally using the AC_INPUT connector, as shown Supply Amplitude Link...
  • Page 6 UG-473 Evaluation Board User Guide Signal Amplifier Note that the input signal, V , must be negative. The RDAC can be operated as an inverting or noninverting − signal amplifier supporting linear or pseudologarithmic gains. Table 10 and Table 11 show the available configurations. where: The noninverting amplifier with linear gain is shown in Figure 4, is the code loaded for the R...
  • Page 7 Evaluation Board User Guide UG-473 Table 11. Amplifier Selection Motherboard Link Options Linear Setting Amplifier Gain Gain Mode Enabled Link Label Noninverting Linear N-INV N-INV Pseudologarithmic N-INV N-INV Inverting Linear Pseudologarithmic Rev. 0 | Page 7 of 20...
  • Page 8: Evaluation Board Software

    Figure 9. To run the program, do the following: Click Start > All Programs > Analog Devices > AD5141 > AD5141 Eval Board. To uninstall the program, click Rev. 0 | Page 8 of 20...
  • Page 9 Evaluation Board User Guide UG-473 Figure 9. EVAL-AD5141DBZ Software Main Window Rev. 0 | Page 9 of 20...
  • Page 10: Software Operation

    SOFTWARE OPERATION value in its respective block within the diagram. In addition, buttons are available that allow you to change the level of some The main window of the EVAL-AD5141DBZ software has two hardware pins. tabs, Visual Mode and Manual Control.
  • Page 11: Evaluation Board Schematics And Artwork

    Evaluation Board User Guide UG-473 EVALUATION BOARD SCHEMATICS AND ARTWORK MOTHERBOARD Figure 11. SDP Connector and Power Supply Rev. 0 | Page 11 of 20...
  • Page 12 UG-473 Evaluation Board User Guide Figure 12. Schematic of Test Circuits Rev. 0 | Page 12 of 20...
  • Page 13 Evaluation Board User Guide UG-473 Figure 13. Schematic of Connectors to Daughter Board Rev. 0 | Page 13 of 20...
  • Page 14 UG-473 Evaluation Board User Guide Figure 14. Component Side View of Motherboard Figure 15. Component Placement Drawing of Motherboard Figure 16. Layer 2 Side PCB Drawing of Motherboard Rev. 0 | Page 14 of 20...
  • Page 15: Daughter Board

    Evaluation Board User Guide UG-473 DAUGHTER BOARD Figure 17. Schematic of Daughter Board Rev. 0 | Page 15 of 20...
  • Page 16 UG-473 Evaluation Board User Guide Figure 18. Component Side View of Daughter Board Figure 19. Component Placement Drawing of Daughter Board Rev. 0 | Page 16 of 20...
  • Page 17 Evaluation Board User Guide UG-473 Figure 20. Layer 2 Side PCB Drawing of Daughter Board Rev. 0 | Page 17 of 20...
  • Page 18: Ordering Information

    UG-473 Evaluation Board User Guide ORDERING INFORMATION BILL OF MATERIALS Table 12. Motherboard Reference Designator Description Supplier /Part Number BUF-3, BUF-4, BUF-W1 2-pin (0.1" pitch) header and shorting shunt FEC 1022247 and 150411 A6, A7, A8 3-pin SIL header and shorting link FEC 1022248 and 150410 A5, A9, A10, A11, A12 6-pin (3 ×...
  • Page 19 Evaluation Board User Guide UG-473 Table 13. Daughter Board Reference Designator Description Supplier /Part Number 256-position digital potentiometer AD5141BCPZ10 Low voltage quad SPDT switch ADG774BRQZ 2-pin SIL header and shorting link FEC 1022247 and 150411 A2, A3, A4, A5, A6, A7, A8 3-pin SIL header and shorting link FEC 1022248 and 150410 C2, C3...
  • Page 20 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.
  • Page 21 Digital Potentiometer Development Tools Click to view products by manufacturer: Analog Devices Other Similar products are found below : EVAL-AD5171DBZ EVAL-AD5273DBZ EVAL-AD5247DBZ EVAL-AD5162SDZ EVAL-AD5232SDZ EVAL-AD5246DBZ EVAL- AD5258DBZ EVAL-AD5204SDZ EVAL-AD5259DBZ MAX5498EVKIT+ MAX5392EVMINIQU+ MAX5387MINIQUSB+ MAX5389EVKIT+ MAX5386MEVMINIQU+ MAX5394MEVKIT# PIM523 MCP43XXEV MCP401XEV TPL0401EVM 356 2273 4219...

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