Evaluation Board for Quad, 16-Bit, Serial Input, Voltage Output DAC EVAL-AD5064-1EBZ FEATURES GENERAL DESCRIPTION Full featured evaluation board for the 14-lead TSSOP AD5064 On-board reference On-board ADC for voltage readback Various link options Direct hookup to USB port of PCs PC software for control of DACs This data sheet describes the evaluation board for the AD5064 quad 16-bit DAC. The AD5064 operates from a single 4.5 V to 5.5 V supply. The REF195 is an external reference on this evaluation board. Complete specifications for the AD5064 can be found in the data sheet available from Analog Devices, Inc., and should be consulted in conjunction with this data sheet when using the evaluation board. The evaluation board interfaces to the USB port of any IBM®compatible PC. Software is available with the evaluation board that allows users to easily program the AD5064. FUNCTIONAL BLOCK DIAGRAM 5V VOLTAGE REFERENCE POWER SUPPLY INPUTS EXT REF A EXT REF B USB CONNECTOR EXT REF C EXT REF D SMB CONNECTORS VREF A VREF D VOUTA VOUTB CONTROLLER CY7C68013 ADG738 8:1 MUX I/O ADC VOUTD 07868-001 AD5064 Figure 1. Rev. 0 Evaluation boards are only intended for device evaluation and not for production purposes. Evaluation boards are supplied “as is” and without warranties of any kind, express, implied, or statutory including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose. No license is granted by implication or otherwise under any patents or other intellectual property by application or use of evaluation boards. Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Analog Devices reserves the right to change devices or specifications at any time without notice. Trademarks and registered trademarks are the property of their respective owners. Evaluation boards are not authorized to be used in life support devices or systems. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. www.analog.com Tel: 781.329.4700 Fax: 781.461.3113 ©2009 Analog Devices, Inc. All rights reserved. EVAL-AD5064-1EBZ TABLE OF CONTENTS Features .............................................................................................. 1 Installing the Software ..................................................................4 General Description ......................................................................... 1 Software Operation .......................................................................4 Functional Block Diagram .............................................................. 1 Evaluation Board Schematics and Artwork ...................................5 Revision History ............................................................................... 2 Ordering Information .......................................................................9 Evaluation Board Hardware ............................................................ 3 Component Listing .......................................................................9 Power Supplies .............................................................................. 3 Ordering Guide .............................................................................9 Link Options ................................................................................. 3 ESD Caution...................................................................................9 Evaluation Board Software .............................................................. 4 REVISION HISTORY 7/09—Revision 0: Initial Version Rev. 0 | Page 2 of 12 EVAL-AD5064-1EBZ EVALUATION BOARD HARDWARE POWER SUPPLIES LINK OPTIONS To power the EVAL-AD5064-1EBZ, supply 5.5 V between the AVDD and AGND inputs for the analog supply of the AD5064. Alternatively, placing LK6 in Position B powers the analog circuitry from the USB port (default setting). Before using the evaluation board, a number of link and switch options should be set to the required operating setup. The default link options are listed in Table 1. Table 2 describes the functions of these link options. The default setup is controlled by the PC via the USB port. Both AGND and DGND inputs are provided on the board. The AGND and DGND planes are connected at one location close to the AD5064. To avoid ground loop problems, do not connect AGND and DGND elsewhere in the system. Each supply is decoupled to the relevant ground plane with 10 μF and 0.1 μF capacitors. Each device supply pin is also decoupled with a 10 μF and 0.1 μF capacitor pair to the relevant ground planes. Table 1. Link Options Setup for PC Control (Default) Link No. LK1 to LK4 LK5 LK6 LK7 LK8 LK9 LK10 LK11 LK12 LK13 Option Inserted B B A A B A A A Removed Table 2. Link Functions Link No. LK1 to LK4 LK5 LK6 LK7 LK8 LK9 LK10 LK11 LK12 LK13 Function These links connect the VOUTA to VOUTD pins of the AD5064 to the input/output pins of ADG738 demultiplexer to monitor the DAC output value using the on-board AD7476 ADC. This link selects the AVDD power supply source for the analog circuitry. Position A selects J6 as the AVDD analog circuitry power supply source. Position B selects the 5 V power supply source as the AVDD analog circuitry power supply source (see LK6). This link selects the 5 V power supply source for the digital circuitry. Position A selects J7 as the 5 V digital circuitry power supply source. Position B selects the USB port as the 5 V digital circuitry power supply source. This link selects whether the AD5064 evaluation board is controlled by the PC via the USB port or by an external source via the SMB connectors, J1 to J5. Position A selects control by the PC via the USB port. Position B selects control by an external source via the SMB connectors, J1 to J5. This link sets the RESET pin on the ADG738. Position A allows normal operation of the switch. Position B resets the switch. This link selects the AVDD power supply source for the REF195. Position A selects J6 as the REF195 power supply source. Note that for optimum operation of the REF195, it should be powered from 7 V. Position B selects the AVDD as the REF195 power supply source (see LK5). This link selects the use of a 0.1 μF capacitor on the DAC reference wire. This link selects the DAC reference source. Position A selects J11 as the DAC reference source. Position B selects the on-board REF195 5 V reference as the DAC reference source. This link selects whether the part power-on resets to zero or midscale. Position A ensures that the part power-on resets to midscale. Position B ensures that the part power-on resets to zero scale. This link selects the DAC voltage source. Position A selects the DAC power supply source as the DAC voltage source (see LK10). Position B selects the on-board REF195 5 V reference or an external reference as the DAC voltage source (see LK11). Rev. 0 | Page 3 of 12 EVAL-AD5064-1EBZ EVALUATION BOARD SOFTWARE INSTALLING THE SOFTWARE Control Bits The AD5064 evaluation kit includes self-installing software on CD. The software is compatible with Microsoft® Windows® 2000 and Windows XP. To select a command to program the part, click the drop-down menu under the Select Control Function section and select the appropriate option from the menu. For example, to program all DAC outputs with full scale, select Write to and Update DAC channel n. Next, click All DACs in the Address Bits section, and then enter the data in hexadecimal format into the Data section. To install the software, take the following steps: 1. 2. 3. 4. Install the software before connecting the evaluation board to the USB port of the PC. This ensures that the board is correctly recognized when connected to the PC. Start the Windows operating system and insert the CD. The installation software should launch automatically. If it does not, run the setup.exe file directly from the CD. After installation from the CD is complete, power up the AD5064 evaluation board as described in the Power Supplies section. Connect the board to the USB port of the PC using the cable supplied. When the software detects the evaluation board, precede through the dialog boxes that appear to finalize the installation. SOFTWARE OPERATION From the Analog Devices menu, click Start > All Programs > Analog Devices > AD5064 > AD5064 Evaluation Software. For older PCs (prior to Windows® XP), click Start > Programs > Analog Devices > AD5064 > AD5064 Evaluation Software. Other commands that the AD5064 evaluation software lets you program include the power-down DAC bits, the clear code register bits, and the LDAC register bits. These commands are performed by clicking the corresponding option button under the Control Bits section and then clicking Write To Part. You can also set the register bits for the required mode of operation. Consult the AD5064 data sheet for details. Hardware Pins To set LDAC and CLR to high or low, click the corresponding, LDAC and CLR, checkbox. This command is then executed immediately. There is no need to click Write To Part. ADC The voltage output on each DAC channel is monitored using the on-board ADC. To read the output voltage, click the OK under Sample ADC. 07868-002 The main window of the AD5064 evaluation software opens, as shown in Figure 2. The data programmed into the 32-bit input shift register is displayed. You can select the Control Bits, the Address Bits, and the Data Bits by clicking the appropriate option button under each section. To execute, click Write To Part. You must click Write To Part to execute all writes to the part. Figure 2. AD5064 Evaluation Software Main Window Rev. 0 | Page 4 of 12 EVAL-AD5064-1EBZ EVALUATION BOARD SCHEMATICS AND ARTWORK 07868-003 Figure 3. Schematic of Controller Circuitry Rev. 0 | Page 5 of 12 EVAL-AD5064-1EBZ 07868-004 Figure 4. Schematic of AD5064 Circuitry Rev. 0 | Page 6 of 12 07868-005 EVAL-AD5064-1EBZ 07868-006 Figure 5. Component Placement Drawing Figure 6. Component Side PCB Drawing Rev. 0 | Page 7 of 12 07868-007 EVAL-AD5064-1EBZ Figure 7. Solder Side PCB Drawing Rev. 0 | Page 8 of 12 EVAL-AD5064-1EBZ ORDERING INFORMATION COMPONENT LISTING Table 3. Qty 1 1 1 2 1 1 1 1 1 11 1 1 1 1 6 2 23 1 1 4 1 4 1 2 2 1 1 1 5 8 21 1 Reference Designator U7 U1 U9 U2, U3 U5 U6 U4 U8 Y1 VOUTA to VOUTD, J1 to J5, J8, J11 J10 J6 J7 D1 C4, C5, C11, C18, C35, C37 C26, C27 C1 to C3, C6 to C9, C12, C17, C19 to C23, C25, C28 to C34, C36 C24 C10 C13 to C16 R1 R2 to R5 R6 R7, R8 R11, R12 R10 R9 L1 LK1 to LK4, LK10 LK5 to LK9, LK11 to LK13 T1 to T21 Supplier/Number 1 Analog Devices/ADP3303AR-3.3 Analog Devices/AD5064BRUZ-1 FEC 9758070 Analog Devices/ADG774BRQ Analog Devices/AD7476ART Analog Devices/ADG738BRU Analog Devices/REF195ES Cypress/CY7C68013-56LFC FEC 569872 FEC 3651228 FEC 4768309 FEC 151786 FEC 9632972 FEC 3599681 FEC 197130 FEC 722005 FEC 8820023 2.2 μF capacitor (0603 package) 1 μF capacitor (0603 package) 0805 package (not inserted) 1.5 Ω resistor Wire-wrap pin (not inserted) 1 kΩ resistor (0603 package) 100 kΩ resistors (0603 package) 2.2 kΩ resistors (0603 package) 10 kΩ resistor (0603 package) 0 Ω resistor (0603 package) Bead inductor Headers (2 × 1 pin) Headers (3 × 1 pin) Test points Digi-Key/490-1552-1-ND FEC 3188840 FEC stands for Farnell Electronics. ORDERING GUIDE Model EVAL-AD5064-1EBZ 1 1 Description 8-lead SOIC_N 14-lead TSSOP 24LC01 16-lead QSOP 6-lead SOT-23 16-lead TSSOP 8-lead SOIC_N CY7C68013-CSP 24 MHz crystal Gold 50 Ω SMB jack USB-Mini-B Power connector Power connector LED 10 μF, 10 V tantalum capacitors (TAJ-B package) 22 pF capacitors (0603 package) 0.1 μF capacitors (0603 package) ESD CAUTION Package Description Evaluation Board Z = RoHS Compliant Part. Rev. 0 | Page 9 of 12 FEC 9331832 FEC 911239 FEC 911471 FEC 911276 FEC 9330399 FEC 9331662 FEC 9526862 FEC 511705 FEC 511717 FEC 8731144 EVAL-AD5064-1EBZ NOTES Rev. 0 | Page 10 of 12 EVAL-AD5064-1EBZ NOTES Rev. 0 | Page 11 of 12 EVAL-AD5064-1EBZ NOTES ©2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. EB07868-0-7/09(0) Rev. 0 | Page 12 of 12