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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-AD5144DBZ
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
AD5144
AD5144
data sheet
UG-469
user guide
EVAL-AD5144DBZ
Evaluation Board User Guide
Digital Potentiometer
GENERAL DESCRIPTION
This user guide describes the evaluation board for evaluating the
AD5144—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
AD5144
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
AD5144
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
AD5144
can be configured as a versatile
EVAL-AD5144DBZ
AD5144
part can be found in the
SDP-S
UG-469
AD5144
can operate
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Table of Contents
Related Manuals for Analog Devices UG-469
Summary of Contents for Analog Devices UG-469
-
Page 1: Features
Complete specifications for the AD5144 part can be found in the AD5144 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-AD5144DBZ WITH MOTHERBOARD AND SDP-S Figure 1. -
Page 2: Table Of Contents
UG-469 Evaluation Board User Guide TABLE OF CONTENTS Features ....................1 Evaluation Board Software ...............8 Package Contents ................1 Installing the Software ..............8 General Description ................. 1 Software Operation ..............10 EVAL-AD5144DBZ with Motherboard and SDP-S ..... 1 Evaluation Board Schematics and Artwork ........ 11 Revision History ................ -
Page 3: Evaluation Board Hardware
Evaluation Board User Guide UG-469 EVALUATION BOARD HARDWARE Link Options Several link and switch options are incorporated in the EVAL- POWER SUPPLIES MB-LV-SDZ motherboard and should be set up before using The EVAL-MB-LV-SDZ motherboard supports using single and the board. Table 2 describes the positions of the links to control dual power supplies. -
Page 4: Test Circuits
UG-469 Evaluation Board User Guide TEST CIRCUITS However, by using the R34 and R35 external resistors, the user can reduce the voltage of the voltage references. In this case, use EVAL-AD5144DBZ and EVAL-MB-LV-SDZ incorporate the A1 and B1 test points to measure the voltage applied to the several test circuits to evaluate the performance of the AD5144. - Page 5 Evaluation Board User Guide UG-469 AC Signal Attenuation Table 5. AC Signal Attenuation Link Options The RDAC can be used to attenuate an ac signal, which must be Maximum provided externally using the AC_INPUT connector, as shown Voltage AC Signal...
- Page 6 UG-469 Evaluation Board User Guide Signal Amplifier 1.7kΩ The RDAC can be operated as an inverting or noninverting VOUT2 signal amplifier supporting linear or pseudologarithmic gains. Table 6 shows the available configurations. 10nF The noninverting amplifier with linear gain is shown in Figure 4, and the gain is defined in Equation 3.
- Page 7 Evaluation Board User Guide UG-469 Table 6. Amplifier Selection 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...
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Page 8: Evaluation Board Software
Figure 11. To run the program, do the following: Click Start > All Programs > Analog Devices > AD5144 > AD5144 Eval Board. To uninstall the program, click Rev. 0 | Page 8 of 20... - Page 9 Evaluation Board User Guide UG-469 Figure 11. EVAL-AD5144DBZ Software Main Window Rev. 0 | Page 9 of 20...
-
Page 10: Software Operation
UG-469 Evaluation Board User Guide 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-AD5144DBZ software has two hardware pins. -
Page 11: Evaluation Board Schematics And Artwork
Evaluation Board User Guide UG-469 EVALUATION BOARD SCHEMATICS AND ARTWORK MOTHERBOARD Figure 13. SDP Connector and Power Supply Rev. 0 | Page 11 of 20... - Page 12 UG-469 Evaluation Board User Guide Figure 14. Schematic of Test Circuits Rev. 0 | Page 12 of 20...
- Page 13 Evaluation Board User Guide UG-469 Figure 15. Schematic of Connectors to Daughter Board Rev. 0 | Page 13 of 20...
- Page 14 UG-469 Evaluation Board User Guide Figure 16. Component Side View of Motherboard Figure 17. Component Placement Drawing of Motherboard Figure 18. Layer 2 Side PCB Drawing of Motherboard Rev. 0 | Page 14 of 20...
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Page 15: Daughter Board
Evaluation Board User Guide UG-469 DAUGHTER BOARD Figure 19. Schematic of Daughter Board Rev. 0 | Page 15 of 20... - Page 16 UG-469 Evaluation Board User Guide Figure 20. Component Side View of Daughter Board Figure 21. Component Placement Drawing of Daughter Board Rev. 0 | Page 16 of 20...
- Page 17 Evaluation Board User Guide UG-469 Figure 22. Layer 2 Side PCB Drawing of Daughter Board Rev. 0 | Page 17 of 20...
-
Page 18: Ordering Information
UG-469 Evaluation Board User Guide ORDERING INFORMATION BILL OF MATERIALS Table 7. 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... - Page 19 Evaluation Board User Guide UG-469 Table 8. Daughter Board Reference Designator Description Supplier /Part Number 256-position digital potentiometer AD5144BCPZ10 Low voltage quad SPDT switch ADG774BRQZ A1, ADDR0, ADDR1 3-pin SIL header and shorting link FEC 1022248 and 150410 C2, C4 6.3 V tantalum capacitor (Case A), 10 µF, ±20%...
- 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.
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