Datasheet

ManualsBrandsANALOG DEVICES ManualsDev KitsPCB design board

Evaluation Board User Guide

UG-322

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 the AD5110 Digital Potentiometer

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS.

Rev. 0 | Page 1 of 12

FEATURES

Full-featured evaluation board for the AD5110

Several test circuits

Various ac/dc input signals

PC control via a separately purchased system demonstration

platform (SDP)

PC control software

Resistor tolerance error stored in EEMEM

PACKAGE CONTENTS

EVAL-AD511xSDZ evaluation board

CD that includes

Self-installing software that allows users to control the

board and exercise all functions of the device

Electronic version of the AD5110 data sheet

Electronic version of the UG-322 user guide

GENERAL DESCRIPTION

This user guide describes the evaluation board for evaluating the

AD5110—a single-channel, 128-position, nonvolatile memory

digital potentiometer.

The AD5110 supports single-supply 2.3 V to 5.5 V operation,

making the device suited for battery-powered applications and

many other applications, offering guaranteed low resistor

tolerance errors of ±8% and high bandwidth while allowing

up to ±6 mA current density in the A, B, and W pins.

The logic voltage levels operate from single 1.8 V to 5.5 V

supplies.

The versatile I

C-compatible digital interface allows readback

of the wiper register and EEPROM content which contain the

resistor tolerance, providing an end-to-end tolerance accuracy

of 0.1%.

The EVA L-AD5110SDZ can operate in single-supply mode and

incorporates an internal power supply from the USB.

Complete specifications for the AD5110 part can be found in

the AD5110 data sheet, which is available from Analog Devices,

Inc., and should be consulted in conjunction with this user

guide when using the evaluation board.

DIGITAL PICTURE OF EVALUATION BOARD WITH SYSTEM DEMONSTRATION PLATFORM

10199-001

Figure 1.

Summary of content (12 pages)

PAGE 1
Evaluation Board User Guide UG-322 One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.
PAGE 2
UG-322 Evaluation Board User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Test Circuits ...................................................................................4 Package Contents .............................................................................. 1 Evaluation Board Software ...............................................................5 General Description .......................................
PAGE 3
Evaluation Board User Guide UG-322 EVALUATION BOARD HARDWARE POWER SUPPLIES LINK OPTIONS The EVAL-AD5110SDZ supports using single power supplies. Several link and switch options are incorporated in the evaluation board and should be set up before using the board. Table 1 describes the positions of the links to control the evaluation board by a PC, via the SDP board, using the EVAL-AD5110SDZ. The functions of these link and switch options are described in detail in Table 3.
PAGE 4
UG-322 Evaluation Board User Guide AC Signal Attenuation TEST CIRCUITS The AD5110 can be used to attenuate an ac signal, which must be provided externally using the AC_INPUT connector, as shown in Figure 3. The EVAL-AD5110SDZ incorporates several test circuits to evaluate the AD5110 performance. DAC The AD5110 can be operated as a digital-to-analog converter (DAC), as shown in Figure 2.
PAGE 5
Evaluation Board User Guide UG-322 EVALUATION BOARD SOFTWARE INSTALLING THE SOFTWARE RUNNING THE SOFTWARE The EVAL-AD5110SDZ evaluation kit includes evaluation board software provided on a CD. The software is compatible with Windows® XP, Windows Vista, and Windows 7 (both 32 and 64 bits). To run the evaluation board software, use the following steps: 1. 2.
PAGE 6
UG-322 Evaluation Board User Guide OPERATING THE SOFTWARE The main window of the EVAL-AD5110SDZ software is divided into the following sections: QUICK COMMANDS, MANUAL DATA, RDAC, and MEMORY. The features of the main window are as follows: • • The QUICK COMMANDS section allows you to send quick commands directly to the AD5110. The RDAC section can be used to update the RDAC registers by typing a value into a text box and clicking WRITE.
PAGE 7
Evaluation Board User Guide UG-322 10199-006 EVALUATION BOARD SCHEMATICS AND ARTWORK Figure 6. Schematic of the AD5110 Circuitry Rev.
PAGE 8
Evaluation Board User Guide 10199-007 UG-322 Figure 7. Schematic of SDP Connector Rev.
PAGE 9
UG-322 10199-008 Evaluation Board User Guide 10199-009 Figure 8. Component Placement Drawing Figure 9. Component Side PCB Drawing Rev.
PAGE 10
Evaluation Board User Guide 10199-010 UG-322 Figure 10. Solder Side PCB Drawing Rev.
PAGE 11
Evaluation Board User Guide UG-322 ORDERING INFORMATION BILL OF MATERIALS Table 6. Qty 1 2 4 2 1 2 1 8 1 1 1 1 4 2 2 7 1 1 1 1 1 1 Reference Designator C3 C1,C2 C25, C26, C27, C34 C24, C33 D1 VLOGIC_EXT, EXTERNAL J4 LK1, LK2, LK3, LK4, LK5, LK6, LK8, ASE BUF-W R11 R10 R4 R5, R6, R12, R13 R8, R9 DGND, AGND 3V3, A, B, VDD, VLOGIC, VOUT, W U1 U3 U5 U7 U15 Description 100 nF, 0402 capacitor 0.1 µF, 0603 capacitor 0.1 µF, 0603 capacitor 10 µF, 1206 capacitor Green LED 2-pin connector Receptacle, 0.
PAGE 12
UG-322 Evaluation Board User Guide NOTES I2C refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors). ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD.